bluuebunny/crossref_metadata_2025 huggingface dataset:
Bis{2-[1-(benzylimino)ethyl]-5-methoxyphenol}dichlorozinc(II)
Authors: Xu Xing-You , Xu Tong-Tao , Ni Shuai-Shuai , Gao Jian , Wang Da-Qi
Published: July 2006

The title complex, [ZnCl2(C16H17NO2)2], displays a distorted tetrahedral coordination geometry around the ZnII ion. The Schiff base inner salt, (benzylimino)ethyl-5-methoxyphenol, coordinates in a monodentate manner to the ZnII ion via the deprotonated hydroxy groups. The protonated imino groups form intramolecular hydrogen bonds with the deprotonated hydroxyl groups of the same Schiff base ligand.
N-(3-Flurobenzoyl)-N′-phenylthiourea
Authors: Zhang You-Ming , Qin Jing-Dong , Lin Qi , Wei Tai-Bao
Published: July 2006

In the crystal structure of the title compound, C14H11FN2OS, the molecules form centrosymmetric hydrogen-bonded dimers, with the S atom forming an intermolecular hydrogen bond with the H atom of an NH group.
Methoxyrutaretin, a bioactive furanocoumarin isolated from Trachyspermum stictocarpum
Authors: Bauri A. K. , Foro Sabine , Lindner Hans J. , Nayak S. K.
Published: July 2006

The crystal structure of the title compound, 2,3-dihydro-2-(1-hydroxy-1-methylethyl)-9-methoxy-7H-furo[3,2-g][1]benzopyran-7-one, also known as methylrutaretin, C15H16O5, is stabilized by intermolecular O—H...O hydrogen-bond interactions, forming zigzag chains parallel to the c axis.
Bis{4-Bromo-2-[3-(methylammonio)propyliminomethyl]phenolato}zinc(II) dinitrate
Authors: Wang Qing , Fang Xiao-Niu
Published: July 2006

The title compound, [Zn(C11H15BrN2O)2](NO3)2, is a centrosymmetric mononuclear Schiff base zinc(II) complex. The ZnII atom, lying on a twofold rotation axis, is four-coordinated by two phenolate O atoms and two imine N atoms from two Schiff base ligands, forming a tetrahedral coordination.
A monomeric N,N′-dilithiobis(amido)organophosphane
Authors: Copsey May C. , Chivers Tristram
Published: July 2006

The title compound [μ2-bis(2,6-diisopropylphenylamido)phenylphospaine]bis(diethyl ether)dilithium(I), [Li2(C30H39N2P)(C4H10O)2] or Li2(Et2O)2[PhP(NDipp)2] (Dipp = 2,6-diisopropylphenyl), has been structurally characterized. This is the first example of a monomeric N,N′-dilithiobis(amido)organophosphane. The steric constraints of the bulky diisopropylphenyl substituents bonded to the N atom and the solvation of the lithium ions by a donor solvent prevent the formation of a higher oligomer.
11H-Dibenzo[b,e]azepin-6(5H)-one
Authors: Li Qing-Bin , Yang Wei-Chun , Han Yong-Jun , Zhao Xiao-Jun
Published: July 2006

In the title compound, C14H14NO, the two benzene rings make a dihedral angle of 60.4 (4)°. The crystal packing is stabilized by intermolecular N—H...O and C—H...O hydrogen bonds and weak π–π stacking, linking the molecules into ladders of dimers.
4-{[3,5-Bis(methoxycarbonyl)-4,5-dihydro-1H-pyrazol-5-yl]methylamino}pyridine 1-oxide monohydrate
Authors: Hostetler Katherine J. , Poole James S. , Fanwick Phillip E.
Published: July 2006

The title compound, C13H16N4O5·H2O, was isolated following the cycloaddition reaction of 4-azidopyridine 1-oxide with an excess of methyl acrylate. The compound arises from a reaction sequence whereby the expected triazoline product undergoes rearrangement and a second cycloaddition reaction to yield the title pyrazoline product without the presence of a strong base which is usually required for such transformations.
(+)-(R)-(tert-Butylvinylphosphinoyl)benzene
Authors: Szmigielska Anna , Pietrusiewicz K. Michal , Ricken Stefan , Schürmann Markus , Preut Hans , Eilbracht Peter
Published: July 2006

The chiral title compound, C12H17OP, with potential uses in asymmetric induction in homogeneous catalysed reactions, shows an s-cis conformation for the C=C—P=O unit, in common with related materials.
4,4′-Bipyridine–2,4-dihydroxybenzoic acid (1/1)
Authors: Wang Zi-Liang , Wei Lin-Heng , Li Ming-Xue
Published: July 2006

The title compound, C10H8N2·C7H6O4, consists of 4,4′-bipyridine and 2,4-dihydroxybenzoic acid molecules, which are linked via O–H...N hydrogen bonds, forming infinite one-dimensional chains. Adjacent chains are further linked into a two-dimensional structure by C—H...π interactions.
Poly[tetramethylammonium [nitratouranyl-μ3-selenito]]
Authors: Liu Dong-Sheng , Huang Gan-Sheng , Luo Qiu-Yan , Xu Ya-Ping , Li Xin-Fa
Published: July 2006

The title compound, (C4H12N)[UO2(NO3)(SeO3)], consists of uranyl complex anions and [NMe4]+ cations. Both cations and anions display mirror symmetry. Each UO2 unit is coordinated by three selenite dianions and one nitrate anion with a pentagonal–bipyramidal geometry, forming anionic ladder-like chains with charge-compensating [NMe4]+ cations intercalated between the chains.
5-(3-Bromobenzylideneamino)-4-chloro-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-1H-pyrazole-3-carbonitrile
Authors: Li Shu-Yan , Zhong Ping , Hu Mao-Lin
Published: July 2006

The title compound, C18H7BrCl3F3N4, is a tricyclic imine with an overall Y-shape. The dihedral angles between the pyrazole ring and the two benzene rings are 121.43 (2) and 20.48 (1)°.
Dichloro{N-(diphenylphosphino)-N-[(diphenylphosphoryl)methyl]pyridin-2-amine-κ2
N,N′}platinum(II)
Authors: Li Peng , Li Qing-Shan , Xu Feng-Bo , Song Hai-Bin , Zhang Zheng-Zhi
Published: July 2006

The title compound, [PtCl2(C30H26N2OP2)], is a mononuclear PtII complex. The Pt atom is coordinated by one pyridine N atom, one P atom and two Cl atoms, which form a distorted square plane around the PtII atom.
Diaquabis(3-hydroxypyridine N-oxide)dithiocyanatocobalt(II)
Authors: Shi Jing-Min , Xu Hai-Yan , Liu Lian-Dong
Published: July 2006

In the title mononuclear complex, [Co(NCS)2(C5H5NO2)2(H2O)2], the six-coordinated CoII atom lies on an inversion center. In the crystal structure, intermolecular O—H...O (H...O = 1.85–2.01 Å) and O—H...S (H...S = 2.40 Å) hydrogen bonds link molecules into a three-dimensional network.
Isopentyltriphenylphosphonium bromide methanol solvate
Authors: Czerwinski Edmund W.
Published: July 2006

At 102 K, the isopentyl group of the title compound, C23H26P+·Br−, is in the extended conformation. The phenyl rings are in the propeller configuration usually found in this family of triphenylphosphonium compounds. The methanol solvent molecule is hydrogen bonded to the bromide ion.
Chlorobis(1,10-phenanthroline-κ2
N,N′)copper(II) 4-aminobenzenesulfonate trihydrate
Authors: Sui Ai-Xiang , Zhu Gang , Tang Zong-Xun
Published: July 2006

The crystal structure of the title compound, [CuCl(C12H8N2)2](C6H6NO3S)·3H2O, contains CuII cations five-coordinated by one chloride anion and four N atoms of two 1,10-phenanthroline ligands. Between the the 4-aminobenzenesulfonate anions and the uncoordinated water molecules intermolecular hydrogen bonding is found.
Bis[4-fluoro-N-(quinolin-8-yl)benzenesulfonamidato-κ2
N,N′]copper(II) dichloromethane hemisolvate
Authors: Silva Luiz Everson da , Joussef Antonio Carlos , Foro Sabine , Schmidt Boris
Published: July 2006

In the title compound, [Cu(C30H20F2N4O4S2)]·0.5CH2Cl2, the CuII atom is four-coordinated by the N atoms of quinoline and sulfonamide groups in a distorted tetrahedral geometry. The solvent molecule lies on a twofold axis. Intermolecular C—H...O hydrogen bonds link the molecules into a three-dimensional network.
2,2′,3,4,4′,5,5′-Heptachlorobiphenyl (PCB 180)
Authors: Vyas Sandhya M. , Parkin Sean , Lehmler Hans-Joachim
Published: July 2006

In the title compound, C12H3Cl7, there are two molecules in the asymmetric unit. The dihedral angles between the benzene rings are 69.63 (7) and 68.48 (6)°.
trans-Dichlorobis(tri-m-tolylphosphine)palladium(II)
Authors: Meijboom Reinout , Muller Alfred , Roodt Andreas
Published: July 2006

In the title compound, trans-[PdCl2{P(C7H7)3}2], where P(C7H7)3 is tri-m-tolylphosphine, the Pd atom is on an inversion centre, resulting in a trans-square-planar geometry. Selected geometric parameters are Pd—P and Pd—Cl distances of 2.3289 (4) and 2.2897 (4) Å, respectively, and a P—Pd—Cl angle of 87.77 (2)°. The effective cone angle for the tri-m-tolylphosphine is calculated to be 165°.
Hexaaquacadmium(II) bis{[N-(2-oxidobenzylidene)alanylglycinato]cuprate(II)} dodecahydrate
Authors: Liu Wen-Long , Zhang Yan-Yan , Lu Yao , Hu Xiao-Ya
Published: July 2006

In the title compound, [Cd(H2O)6][Cu(C12H11N2O4)]2·12H2O, the Cd2+ ion lies on an inversion center and the coordination by six aqua ligands is slightly distorted octahedral. The CuII atom has a square-planar coordination with two N and two O atoms of the tetradentate Schiff base ligand L
3−, which was derived from alanylglycine and salicylaldehyde. The [Cd(H2O)6]2+ cations and [CuL]− anions each form columns along the c axis; these are well segregated from each other.
catena-Poly[[bromomercury(II)]-di-μ-bromo-κ4
Br:Br-[bromomercury(II)]-μ-1,3-bis(ethylsulfanyl)propane-κ2
S:S′]
Authors: Cui Yun-Cheng , Che Guang-Bo , Lin Xian-Feng , Liu Chun-Bo
Published: July 2006

The title complex, [Hg2Br4(C7H16S2)]n, has a chain structure. Two bridging Br atoms and two terminal Br atoms coordinate to two HgII atoms, forming an (HgBr2)2 dimer, which is located on an inversion center. The 1,3-bis(ethylsulfanyl)propane ligands, which lie on a twofold axis, bridge the (HgBr2)2 dimers, forming a one-dimensional chain. The HgII atom adopts a tetrahedral geometry, formed by three Br and one S atoms.
2,6-Dichlorobenzaldehyde 2,4-dinitrophenylhydrazone
Authors: Ge Wen-Zhong , Li Feng
Published: July 2006

In the title compound, C13H8Cl2N4O4, the dinitrophenylhydrazone and benzene ring planes are nearly coplanar, making a dihedral angle of 3.39 (9)°. There is an intramolecular N—H...O interaction and weak intermolecular C—H...O hydrogen-bonding interactions which stabilize the packing.
Ethylenediammonium thiophene-2,5-dicarboxylate dihydrate, an acid–base complex with a three-dimensional hydrogen-bonding system
Authors: Wu Si-Min , Li Ming , Xiang Jiang-Feng , Yuan Liang-Jie , Sun Ju-Tang
Published: July 2006

The crystal structure of the title compound, C2H10N2
2+·C6H2O4S2−·2H2O, is built of ethylenediammonium dications, occupying a special position on an inversion center, thiophene-2,5-dicarboxylate dianions, in a special position on the twofold axis, and water molecules in general positions. All residues are involved in an extensive hydrogen-bonding system, which links them into a three-dimensional supramolecular arrangement.
(3aR,8bR)-(+)-1-Methyl-1,2,3,3a,4,8b-hexahydropyrrolo[2′,3′:3,4]cyclopenta[1,2-b]pyridine-1,5-diium dichloride monohydrate
Authors: Ullrich Thomas , Pyerin Michael , Mereiter Kurt
Published: July 2006

The title compound, C11H16N2
2+·2Cl−·H2O, is a novel conformationally constrained tricyclic analogue of nicotine, in which the pyridine and pyrrolidine rings of the latter are bridged by a CH2 group. As result of this bridge, these two rings are no longer approximately perpendicular as in various salts of nicotine.
(R)-(–)-6-(4-Aminophenyl)-5-methyl-4,5-dihydropyridazin-3(2H)-one
Authors: Zhang Chun-Tao , Wu Jie-Hua , Zhou Li-Na , Wang Yong-Li , Wang Jing-Kang
Published: July 2006

The title compound, C11H13N3O, is a key intermediate in the synthesis of cardiotonic agents. The asymmetric unit consists of two molecules of the same enantiomer and the crystal packing is stabilized by intermolecular N—H...O hydrogen bonds.
3-(2-Chlorobenzyl)isocoumarin
Authors: Abid Obaid-Ur-Rehman , Rama Nasim Hasan , Qadeer Ghulam , Khan Gul Shahzada , Lu Xiao-Ming
Published: July 2006

In the title compound, C16H11ClO2, an unnaturally occurring isocoumarin, the benzene ring is nearly perpendicular to the planar isocoumarin ring system. The crystal packing is stabilized by intra- and intermolecular C—H...Cl and C—H...O hydrogen bonds.
Poly[bis(μ3-benzyloxyiminoacetato)nitratotrisilver(I)]
Authors: Zhang Hongming , Gondi Sudershan R. , Son David Y.
Published: July 2006

The title compound, [Ag3(C9H8NO3)2(NO3)]
n
, exists as a three-dimensional framework and possesses a trinuclear unit consisting of three Ag atoms bridged by two benzyloxyiminoacetate monoanions via N and O atoms, one Ag atom having also a monodentate nitrate ligand. The three Ag atoms are independent and exist in different coordination environments.
2,6-Bis(3-ferrocenyl-5-methyl-1H-pyrazol-1-ylcarbonyl)pyridine
Authors: Shi Yao-Cheng , Zhu Bei-Bei , Sui Chun-Xia
Published: July 2006

Molecules of the title compound, [Fe2(C5H5)2(C25H19N5O2)], crystallize as enantiomeric pairs, located about inversion centers, thus acting as centrosymmetric dimers.
7,7a-Dihydroisoindolo[2,1-a]pyrimidin-12-one
Authors: Odabaşoğlu Mustafa , Büyükgüngör Orhan
Published: July 2006

The crystal structure of the title compound, C18H12N2O, is stabilized by intermolecular N—H...O hydrogen bonds and C—H...π interactions. N—H...O hydrogen bonds generate a C(6) chain. The dihedral angle between the isoindoline group and the naphthalene ring system is 24.96 (12)°.
3-Anilinoisobenzofuran-1(3H)-one
Authors: Odabaşoğlu Mustafa , Büyükgüngör Orhan
Published: July 2006

Crystals of the title compound, C14H11NO2, are stabilized by an intermolecular N—H...O hydrogen bond and a weak π–π interaction. N—H...O hydrogen-bond interactions generate C(6) chains. The phthalide section of the molecule is planar and the dihedral angle between the phthalide group and the benzene ring is 78.43 (5)°.
Dichloro[2,2′-(methylenedithio)bi-1,3-thiazole-κ2
N,N′]cobalt(II)
Authors: Zhao Wen-Tao , Liu Hui-Min , Zhang Wen-Qin
Published: July 2006

In the title complex, [CoCl2(C7H6N2S4)], 2,2′-(methylenedithio)bi-1,3-thiazole acts as a bidentate ligand and chelates one CoII ion through the two N atoms to give an eight-membered symmetric unit. The CoII ion is located on a twofold axis and displays a slightly distorted tetrahedral coordination environment, where the two Cl− anions occupy the remaining coordination sites. The N—Co—N and Cl—Co—Cl planes are nearly perpendicular, with a dihedral angle of 88.0 (3)°.
1-(Furan-2-ylmethylene)-4-phenylthiosemicarbazide
Authors: Jian Fang-Fang , Li Ying
Published: July 2006

In the molecule of the title compound, C12H11N3OS, the dihedral angle between the planar rings is 59.4 (2)°. The structure is stabilized by intramolecular N—H...N and intermolecular N—H...S hydrogen bonds. Intermolecular N—H...S hydrogen bonds link the independent molecules into dimers.
3-(4-Chlorophenyl)-6-methyl-1,6-dihydro-1,2,4,5-tetrazine
Authors: Xu Feng , Hu Wei-Xiao , Zhou Wei , Xia Chun-Nian
Published: July 2006

The title compound, C9H9ClN4, was prepared from sodium borohydride and 3-(4-chlorophenyl)-6-methyl-1,2,4,5-tetrazine. The molecule can be considered to be homoaromatic. The tetrazine ring adopts an unsymmetrical boat conformation.
2,6-Di-tert-butyl-4-{[N-(4,6-dichloro-1,3,5-triazin-2-yl)propylamino]methyl}phenol
Authors: Zeng Tao , Chen Li-Gong
Published: July 2006

The title compound, C21H30Cl2N4O, contains a sterically hindered phenol group. The dihedral angle between the two rings is 72.3 (1)°. The propyl chain is disordered over two orientations.
1-[(4-Methylphenyl)sulfonyl]pyrrolidin-2-one
Authors: Zareef Muhammad , Iqbal Rashid , Zaidi Javid H. , Arfan Muhammad , Parvez Masood
Published: July 2006

The title molecular structure, C11H13NO3S, contains a five-membered ring which adopts an envelope conformation.
(13bR,13cS)-rel-11b,11c-Diphenyl-6,11-dihydro-1H,3H,4H,13H-2-oxa-3a,4a,5a,11a,12a,13a-hexaazabenz[f]indeno[2,1,8-ija]naphth[2,3-f]azulene-4,6,11,13-tetrone chloroform solvate
Authors: Hu Sheng-li , Guo Hui-Zhen , She Neng-Fang
Published: July 2006

The crystal structure of the title compound, C28H22N6O5·CHCl3, an important intermediate for molecular tweezers, shows intermolecular hydrogen bonding.
3-(4-Methylpiperidin-1-yl)isobenzofuran-1(3H)-one
Authors: Büyükgüngör Orhan , Odabaşoğlu Mustafa
Published: July 2006

The crystal structure of the title compound, C14H17NO2, is stabilized by three intermolecular C—H...O hydrogen bonds and one π–π interaction. C—H...O hydrogen bonds generate an edge-fused [R
3
3(13)R
4
2(14)R
3
3(13)] ring motif.
catena-Poly[[[diaqua(2-sulfonatobenzoato-κ2
O:O′)zinc(II)]-μ2-1,3-di-4-pyridylpropane-κ2
N:N′] N,N-dimethylformamide solvate]
Authors: Xiao Hong-Ping
Published: July 2006

In the title compound, [Zn(C7H4O5S)(C13H14N2)(H2O)2]·C3H7NO, the ZnII atom is coordinated by two N atoms from two 1,3-di-4-pyridylpropane molecules, two O atoms from one 2-sulfonatobenzoate dianion and two aqua O atoms, in a distorted octahedral geometry. The 2-sulfonatobenzoate dianions function as chelating ligands and the 1,3-di-4-pyridylpropane as a μ2-bridging ligand, forming a chain. O—H...O hydrogen bonds link neighbouring chains into a three-dimensional network.
1,4-Bis(8-tert-butyl-6-methyl-4H-1,3-benzoxazin-3-yl)benzene
Authors: Huerta Raúl , Toscano Rubén A. , Castillo Ivan
Published: July 2006

The solid-state structure of the title compound, C32H40N2O2, is characterized by benzoxazine units with a cisoid geometry, and with the N atoms displaced from the planes of the heterocycles. The two benzoxazine groups are nearly coplanar.
1′-Methyl-4′-(1-naphthyl)-1H-indole-3-spiro-2′-pyrrolidine-3′-spiro-2′′-thiazolo[3,2-a]benzimidazole-2(3H),3′′(2′′H)-dione
Authors: Zhang Xiu-Ling , Liu Ai-Zhen , Jin Mei-Fang
Published: July 2006

In the title compound, C30H22N4O2S, two spiro junctions link a planar 2-oxoindole ring, a pyrrolidine ring and a thiazolo[3,2-a][1,3]benzimidazol-3-one system. Molecules form dimers connected by N—H...N hydrogen bonds.
Hydrochlorothiazide N,N-dimethylacetamide disolvate
Authors: Johnston Andrea , Florence Alastair J. , Kennedy Alan R.
Published: July 2006

Hydrochlorothiazide forms a 1:2 solvate with N,N-dimethylacetamide (systematic name: 6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide dimethylacetamide disolvate), C7H8ClN3O4S2·2C4H9NO. The compound crystallizes with one hydrochorothiazide and two disordered solvent molecules in the asymmetric unit, with a hydrogen-bonding network comprising four N—H...O contacts.
trans-Dichloro(triethylamine-κN)(triphenylphosphine-κP)palladium(II)
Authors: Harding Phimphaka , Harding David J. , Saithong Saowanit , Pakawatchai Chaveng , Youngme Sujittra
Published: July 2006

The Pd atom in the title compound, trans-[PdCl2(C6H15N)(C18H15P)], is in an approximately square-planar environment, coordinated by one triethylamine, one triphenylphosphine and two trans Cl ligands.
{5-[4′-(2,2,5,5-Tetramethyl-3-pyrroline-1-oxyl-3-carbonyl)biphenyl-4-ylethynyl]-2,3,7,8,12,13,17,18-octaethylporphyrinato}copper(II) benzene solvate
Authors: Bolte Michael
Published: July 2006

The title compound, C59H64CuN5O3·C6H6, features an essentially planar porphyrin ring system, with the Cu atom located in the plane and showing equal Cu—N distances. The space between the molecules is occupied by benzene solvent molecules.
4,4′-Dimethyl-2,2′-(N-methyliminodimethylene)diphenol
Authors: Wu Ming-Hu , Liu Wen-Ju , Zou Wei-Dong , Wang Hai-Yan
Published: July 2006

In the title compound, C17H21NO2, the dihedral angle between the benzene rings is 49.8 (3)°. In the crystal structure, the molecules form layers parallel to the ac plane which are stacked along the b axis and which are stabilized by O—H...O and C—H...O hydrogen-bonding interactions.
5-(6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinolin-2-yl)-4-phenyl-1,2,5-oxadiazole N-oxide
Authors: Xu Hao , Ling Yong , Zou Zhi-Hong , Huang Wen-Long , Yao Cheng
Published: July 2006

In the molecule of the title compound, C20H21N3O4, the six-membered heterocyclic ring has a flattened boat form. Intermolecular C—H...O hydrogen bonds link the molecules into dimers, which may be effective in the stabilization of the crystal structure.
Redetermination of Mn1.44Mo8O11: evidence of pairwise distortion of octahedral molybdenum chains
Authors: Gall P. , Gougeon P.
Published: July 2006

Redetermination of the structure of manganese octamolybdenum undecaoxide, Mn1.44Mo8O11, revealed a doubling of the unit cell. The structure consists of infinite chains of trans-edge-sharing Mo6 octahedra cross-linked through O atoms to delimit tunnels in which the disordered Mn2+ cations reside. In comparison with the previous refinement [Carlson et al. (1989). J. Less Common Met. 156, 325–339], the metallic chains exhibit a pairwise distortion, as expected from theoretical calculations.
(E)-4-[3-Ethoxy-4-(2-phenoxyethoxy)benzylideneamino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
Authors: Zhang Wen-Jun , Duan Zhong-Yu , Zhao Xin
Published: July 2006

The title compound, C28H29N3O4, was prepared by the reaction of 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one and 3-ethoxy-4-(2-phenoxyethoxy)benzaldehyde. The vanillin group makes dihedral angles of 73.08 (8) and 66.54 (6)° with the planes of the two terminal phenyl rings, and an angle of 30.49 (6)° with the pyrazolone ring plane. The crystal structure is stabilized by intermolecular C—H...O hydrogen bonds that form centrosymmetric dimers.
[Y(HSeO3)(SeO3)(H2O)]·H2O
Authors: Harrison William T. A.
Published: July 2006

The title compound, aqua(hydrogen trioxoselenato)(trioxoselenato)yttrium(III) monohydrate, which is isostructural with its samarium(III) and neodymium(III) analogues, contains YO8, SeO3 and HSeO3 coordination polyhedra, which fuse together by corner- and edge-sharing, resulting in a layered structure. A network of O—H...O hydrogen bonds helps to consolidate the crystal packing.
1,1′-Bis{α-[(4-methylbenzyl)imino]benzyl}ferrocene
Authors: Wang Hong-Xing , Gao Ren-Qing , Wu Hong-Fei , Geng Feng-Ying , Yang Xiao-Li
Published: July 2006

The title compound, [Fe(C20H18N)2], a new 1,1′-disubstituted ferrocenylketimine derivative, has been synthesized and characterized. All the bond lengths are within normal range.
A second polymorph of (2-thiazolidinethionato)(triphenylphosphine)gold(I)
Authors: Horvath Ulrike E. I. , Cronje Stephanie , Nogai Stefan D. , Raubenheimer Helgard G.
Published: July 2006

The title compound, [Au(C3H4NS2)(C18H15P)], contains a thiazolidinethione ligand coordinated to an AuI atom through the S atom. A triphenylphosphine ligand completes the linear coordination geometry around the Au atom. The compound contains two molecules in the asymmetric unit and is a polymorphic form of a previously reported structure [Grant, Forward & Fackler Jr (1996). Z. Kristallogr.
211, 483–484]. The composite molecules in the two forms exhibit nearly identical bond distances and angles.
A third polymorph of (2-thiazolidinethionato)(triphenylphosphine)gold(I)
Authors: Horvath Ulrike E. I. , Raubenheimer Helgard G.
Published: July 2006

The title compound, [Au(C3H4NS2)(C18H15P)], is a third polymorphic form of a compound previously reported by Grant, Forward & Fackler Jr [Z. Kristallogr. (1996). 211, 483–484]. At 100 K, the present polymorph shows triclinic symmetry, as do the other two polymorphs.
1,2-Bis[5-(2,4-difluorophenyl)-2-methyl-3-thienyl]-3,3,4,4,5,5-hexafluorocyclopent-1-ene: a new photochromic diarylethene compound
Authors: Liu Gang , Xu Chun-Yan , Pu Shou-Zhi , Xu Jing-Kun
Published: July 2006

The title compound, C27H14F10S2, is a new symmetrical photochromic diarylethene derivative which can be used potentially for optical recording media and other optoelectronic device materials. There are two independent molecules in the asymmetric unit. Both adopt a photoactive antiparallel conformation. The distances between the reactive C atoms in the two molecules are 3.664 (7) and 3.621 (7) Å. For one molecule, the dihedral angles between the central cyclopentene ring and the thiophene rings are 46.4 (9) and 51.9 (9)°, and those between the thiophene rings and the adjacent benzene rings are 2.1 (8) and 18.9 (8)°. For the other molecule, the dihedral angles between the central cyclopentene ring and the thiophene rings are 134.5 (9) and 44.3 (9)°, and those between the thiophene rings and the adjacent benzene rings are 2.7 (8) and 27.7 (8)°.
7-Diethylamino-2-oxo-2H-chromene-3-carboxylic acid
Authors: Bardajee Ghasem Rezanejade , Winnik Mitchell A. , Lough Alan J.
Published: July 2006

In the title molecular structure, C14H15NO4, all non-H atoms, except for the C atoms of the terminal methyl groups of the diethylamino substituents, are essentially coplanar. In the crystal structure, a two-dimensional network is formed via weak intermolecular C—H...O hydrogen bonds and π–π stacking interactions.
2-Methacryloxytropone
Authors: Kubo Kanji , Fukeda Eriko , Matsumoto Taisuke , Endo Kazuhiko , Mori Akira
Published: July 2006

The title compound, 7-oxo-1,3,5-cycloheptatrien-1-yl 2-methyl-2-propenoate, C11H10O3, is known as an intermediate for the synthesis of biologically active polymers. In its crystal structure, the tropolone ring forms a dihedral angle of 69.76 (2)° with the ester plane, and intermolecular C—H...π and C—H...O interactions are observed.
Powder study of 3-azabicyclo[3.3.1]nonane-2,4-dione form 2
Authors: Hulme Ashley T , Fernandes Philippe , Florence Alastair , Johnston Andrea , Shankland Kenneth
Published: July 2006

A polycrystalline sample of a new polymorph of the title compound, C8H11NO2, was produced during a variable-temperature X-ray powder diffraction study. The crystal structure was solved at 1.67 Å resolution by simulated annealing from laboratory powder data collected at 250 K. Subsequent Rietveld refinement yielded an R
wp of 0.070 to 1.54 Å resolution. The structure contains two molecules in the asymmetric unit, which form a C
2
2(8) chain motif via N—H...O hydrogen bonds.
2-(3-Hydroxy-4-methoxyphenyl)-N,N,N-trimethylethanaminium chloride
Authors: Efdi Mai , Koketsu Mamoru , Ebihara Masahiro , Ishihara Hideharu
Published: July 2006

The title compound, also known as salicifoline chloride, C12H20NO2
+·Cl−, was isolated from Eniconsanthum membranifolium J. Sinclair for X-ray analysis. Salicifoline is hydrogen bonded to a chloride ion via the OH group.
(E)-4-[3-(4-Chlorobenzyloxy)-4-methoxybenzylideneamino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
Authors: Duan Zhong-Yu , Zhang Wen-Jun , Li Gang , Han En-Shan , Du Feng-Yun
Published: July 2006

In the title compound, C26H24ClN3O3, the vanillin group makes dihedral angles of 8.09 (9), 74.91 (8) and 44.66 (9)° with the pyrazolone ring, the terminal chlorobenzene ring and the terminal phenyl ring, respectively. The crystal packing is stabilized by intermolecular C—H...O hydrogen bonds.
2-[3-Dicyanomethylene-2-(3-methoxybenzylidene)indan-1-ylidene]malononitrile
Authors: Palusiak Marcin , Plażuk Damian , Zakrzewski Janusz
Published: July 2006

The title compound, C23H12N4O, has potential application in non-linear optics; it has a chiral crystal structure despite the lack of a stereogenic centre. The crystal structure involves two intermolecular C—H...N hydrogen bonds.
Bis[1-(but-2-enyl)-5-nitro-1H-benzimidazole-κN
3]dichlorocobalt(II)
Authors: Pınar Şerife , Akkurt Mehmet , Küçükbay Hasan , Orhan Ersin , Büyükgüngör Orhan
Published: July 2006

The title compound, [CoCl2(C11H11N3O2)2], was synthesized from 1-(but-2-enyl)-5-nitrobenzimidazole and cobalt dichloride in ethanol. The CoII atom has a distorted tetrahedral geometry, coordinated by two Cl atoms and two N atoms. The molecule is located on a twofold rotation axis, which passes through the Co atom. In the crystal structure, molecules are connected by intermolecular C—H...O hydrogen-bonding interactions.
9-(4-Methyoxylbenzoyl)-1,2,3,4,7,8-hexahydropyrido[1,2-a]pyrimidin-6-one
Authors: Peng Tao , Yan Sheng-Jiao , Yu Chu-Yi , Huang Zhi-Tang
Published: July 2006

In the title compound, C16H18N2O3, there is an intramolecular N—H...O hydrogen bond. Intermolecular C—H...O bonds stabilize the crystal packing.
(4-Chloro-3,5-dinitrobenzoato)triphenyltin(IV)
Authors: Aziz-ur-Rehman  , Helliwell Madeleine , Ali Saqib , Shahzadi Saira
Published: July 2006

The geometry around the Sn atom of the title compound, [Sn(C6H5)3(C7H2ClN2O6)], is distorted tetrahedral, with Sn—C distances lying in the range 2.124 (2)–2.119 (2) Å and an Sn—O distance of 2.0645 (15) Å.
5,5′-Dimethyl-4,4′-(3,3,4,4,5,5-hexafluorocyclopentene-1,2-diyl)bis(thiophene-2-carboxylic acid) acetone 0.25-solvate
Authors: Liu Xue-Dong , Tong Qing-Xiao , Wang Ru-Ji , Zhang Fu-Shi
Published: July 2006

In the title compound, C17H10F6O4S2·0.25C3H6O, there are two non-solvent molecules in the asymmetric unit, with different conformations. One is a photo-active antiparallel conformation in which the reactive C atoms are separated by 3.569 (6) Å. The other is a photo-inactive parallel conformation in which the reactive C atoms are separated by 4.541 (7) Å.
2,6-Bis[1-(2,6-dimethylphenylimino)ethyl]pyridine
Authors: Huang Yuan-Biao , Ma Xiu-Ling , Zheng Si-Ning , Chen Jian-Xin , Wei Chun-Xia
Published: July 2006

In the molecule of the title compound, C25H27N3, the two 2,6-dimethyl-substituted phenyl rings are connected to the pyridine ring via the C=N imine bonds. Although the compound includes three N atoms, there are no obvious hydrogen-bond or π–π interactions in the crystal structure.
TlBiS2
Authors: Teske Christoph L. , Bensch Wolfgang
Published: July 2006

The ternary compound thallium bismuth disulfide crystallizes in the space group R\overline{3}m and is isotypic with the structures of most of the ABQ
2 chalcogenides (A = monovalent atom, B = trivalent atom and Q = chalcogen), which are members of the α-NaFeO2 structure type. In the title compound, the Tl and Bi atoms are situated on positions with \overline{3}m symmetry, whereas the S atom sites exhibit 3m symmetry. The metal atoms occupy octahedral voids in distinct planes perpendicular to the c axis. The environment around Tl is more distorted than the polyhedron around Bi.
Poly[bis(μ2-O,O′-dimethyl dithiophosphato)mercury(II)]
Authors: Ito Tetsuzo
Published: July 2006

In the title compound, [Hg(C2H6O2PS2)2]
n
, the Hg atom is coordinated by four S atoms in a distorted tetrahedral arrangement. The Hg—S bond distances are in the range 2.508 (2)–2.662 (2) Å, and the six S—Hg—S angles are in the range 99.14 (7)–118.77 (8)°. In the crystal structure, a two-dimensional network of 16-membered rings of [–Hg–S–P–S–]4 is formed parallel to the (100) plane.
[Tris(2-aminoethyl)amine-κ3
N,N′,N′′,N′′′](L-tyrosinato-κ2
N,O)nickel(II) iodide dihydrate
Authors: Pei Yamei , Wang Li
Published: July 2006

In the title compound, [Ni(C9H10NO3)(C6H18N4)]I·2H2O, the NiII atom is in a slightly distorted octahedral coordination environment. In the crystal structure, extensive hydrogen bonding links molecules into a three-dimensional network.
2-Methoxy-3-nitrophenol
Authors: Behrman David M. , Behrman E. J. , Parkin Sean
Published: July 2006

The crystal structure of 2-methoxy-3-nitrophenol, C7H7NO4, is stabilized by hydrogen bonds and π–π stacking interactions.
(E)-1-(5-Bromo-2-ethoxy-3-methoxybenzylidene)-2-(2,4-dinitrophenyl)hydrazine dimethylformamide solvate
Authors: Yang Yun , Ma Shu-Lin , Lu Lan-Li , Yang Xiao-Qing
Published: July 2006

In the title compound, C16H15BrN4O6·C3H7NO, the substituted vanillin group makes a dihedral angle of 7.58 (10)° with the nitrophenylhydrazine mean plane. A bifurcated intra/intermolecular N—H...(O,O) hydrogen bond and two C—H...O interactions help to establish the molecular conformation and consolidate the crystal packing.
N-Benzoyl-N′-methyl-N′-(p-tolylsulfonyl)hydrazine
Authors: Zareef Muhammad , Iqbal Rashid , Zaidi Javid H. , Arfan Muhammad , Parvez Masood
Published: July 2006

The crystal structure of the title compound, C15H16N2O3S, contains chains running along the a axis which are formed via intermolecular N—H...O hydrogen bonds. The side chain comprising the N–N–C(=O)–C sequence of atoms is planar to within 0.0172 (14) Å and the benzene rings are inclined at 33.09 (11)° to one another.
Poly[[[(2,2′-bipyridine-κ2
N,N′)cobalt(II)]-μ3-5-hydroxyisophthalato-κ4
O,O′:O′′:O′′′] dihydrate]
Authors: Zhuo Xin , Pan Zhao-Rui , Wang Zuo-Wei , Li Yi-Zhi , Zheng He-Gen
Published: July 2006

In the title compound, {[Co(C8H4O5)(C10H8N2)]·2H2O]}
n
or {[Co(OH-BDC)(2,2′-bipy)]·2H2O]}
n
(where OH-H2BDC is 5-hydroxyisophthalic acid and 2,2′-bipy is 2,2′-bipyridine), the Co atoms are chelated by two N atoms from the 2,2′-bipy ligand and by four O atoms from OH-BDC ligands in a highly distorted octahedral geometry. OH-BDC acts as a tetradentate ligand, with one carboxylate group chelating one Co atom and the other binding in a monodentate fashion to two other Co atoms to form a one-dimensional zigzag chain. In the crystal structure, one of the solvent water molecules lies on a crystallographic twofold axis. The one-dimensional molecular chains are assembled into a two-dimensional network via O—H...O hydrogen-bonding interactions, while π–π stacking interactions generate a three-dimensional open framework between the two-dimensional networks.
Poly[[tetraaquatris(monomethyl fumarato)distrontium(II)] monomethyl fumarate] at 120 K
Authors: Stahl Kenny , Andersen Jens E. T. , Nilsson Henrik
Published: July 2006

The title compound, {[Sr2(C5H5O4)3(H2O)4](C5H5O4)}
n
, crystallizes with three methyl fumarate ions and four water molecules coordinating the two independent strontium(II) ions. The coordination polyhedra are interconnected by edge-sharing to form chains, which are connected by hydrogen bonds into layers. The layers, in turn, are stacked with the fourth methyl fumarate anion intercalated.
Poly[[diaquazinc(II)]-μ2-4,4′-bipyridine-κ2
N:N′-μ2-p-phenylenebis(oxyacetato)-κ2
O:O′]
Authors: Dai Yu-Mei , Huang Jin-Feng , Chen Shun-Yu , Shen Hui-Ying , Chen Ruo-He
Published: July 2006

The title compound, [ZnII(C8H8O6)(C8H8N2)(H2O)2]
n
, contains a Zn atom coordinated by 4,4′-bipyridine, benzene-1,4-dioxydiacetate and two water molecules. The Zn atom lies on an inversion centre and the benzene-1,4-dioxydiacetate and 4,4-bipyridine ligands lie about other inversion centres.
3-[(2-Hydroxy-5-nitrophenyl)amino]-2-benzofuran-1(3H)-one monohydrate
Authors: Odabaşoğlu Mustafa , Büyükgüngör Orhan
Published: July 2006

The crystal structure of the title compound, C14H10N2O5·H2O, is stabilized by inversion-related O—H...O and C—H...O intermolecular hydrogen bonds and also by π–π interactions. The dihedral angle between the phthalide group and the benzene ring is 51.45 (8)°.
3,9-Diphenyl-2,4,8,10-tetraoxaspiro[5.5]undecane
Authors: Wang Ji-Kui , Yan Dong-Ying , Liu Li-Juan , Liu Shan , Wang Jin-Tang
Published: July 2006

In the molecule of the title compound, C19H20O4, the 1,3-dioxane rings have chair conformations. Intermolecular C—H...O hydrogen bonds link the molecules and may be effective in the stabilization of the crystal structure.
4-(2-Pyridylmethyleneamino)-3-(2-thienylmethyl)-1H-1,2,4-triazol-5(4H)-one
Authors: Yılmaz Isıl , Arslan N. Burcu , Kazak Canan , Sancak Kemal , Unver Yasemin
Published: July 2006

In the title compound, C13H11N5OS, molecules are linked into centrosymmetric dimers through intermolecular N—H...O hydrogen bonds.
The tetralithium derivative of the tetrakis(1-naphthylimido)silicate tetraanion
Authors: Copsey May C. , Balakrishna Maravanji S. , Chivers Tristram
Published: July 2006

The title compound, bis(diethyl ether-κO)tetra(tetrahydrofuran-κO)[μ4-tetrakis(1-naphthylimido)silane(4−)]tetralithium(I) diethyl ether solvate, [Li4(C40H28N4Si)(C4H8O)4(C4H10O)2]·C4H10O, has been structurally characterized. The compound contains the tetrakis(naphthylimido)silicate tetraanion, which is formally isoelectronic with the orthosilicate anion, [SiO4]4−. The two halves of the molecule are equivalent, related by a crystallographic twofold rotation axis.
(1η5-Cyclopentadienyl)(μ-disulfur dinitrido)(triphenylphosphino-2κP)cobalt(II)gold(I) perchlorate
Authors: Slawin Alexandra M. Z. , Woollins J. Derek
Published: July 2006

The title compound, [{Au(C18H15P)}Co(C5H5)(N2S2)]ClO4, has a planar CoS2N2 ring and a close-to-linear N—Au—P angle [176.54 (11)°].
N,N′,N′′′-Triphenylguanidinium nitrate
Authors: Pereira Silva P. S. , Paixão J. A. , Ramos Silva M. , Matos Beja A.
Published: July 2006

The title salt, C19H18N3
+·NO3
−, has two symmetry-independent cations and two symmetry-independent anions in the asymmetric unit, with almost identical geometries. Bond lengths and angles within the guanidinium unit are close to those expected for a Csp
2 atom. Intermolecular hydrogen bonds link anions and cations, forming chains that run along the c axis.
Bis{μ2-2-[2-(dimethylamino)ethyliminomethyl]phenolato}bis[chlorozinc(II)]
Authors: Chen Hsuan-Ying , Lin Chu-Chieh
Published: July 2006

The title complex, [Zn2(C11H15N2O)2Cl2] or [LZnCl]2, where L is the 2-[2-(dimethylamino)ethyliminomethyl]phenolate anion, is obtained by the reaction of LZnEt with CDCl3 or by the reaction of LH with ZnCl2 in refluxing tetrahydrofuran. The Zn atoms in the dimeric complex are bridged by the O atoms of the phenolate anions, and the coordination geometry around each Zn atom is distorted square-based pyramidal. The two Cl atoms lie on the same side of the central Zn2O2 plane.
3,7-Dichloro-3,7-diphenylbenzo[1,2-c;4,5-c′]difuran-1,5(3H,7H)-dione cyclohexane 0.25-solvate
Authors: Liu Shan , Liu Jing-Ning , Song Guang-Liang , Wu Ya-Ming , Zhu Hong-Jun
Published: July 2006

In the main molecule of the title compound, C22H12Cl2O4·0.25C6H12, the rings are planar. The asymmetric unit contains only one-half of a half-occupancy cyclohexane ring (site symmetry 111) and has a distorted chair conformation. Intramolecular C—H...Cl and C—H...O hydrogen bonds may be effective in the stabilization of the crystal structure.
(E)-4-[4-(4-Chlorobenzyloxy)-3-methoxybenzylideneamino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
Authors: Duan Zhong-Yu , Li Gang , Zhang Wen-Jun , Han En-Shan , Du Feng-Yun
Published: July 2006

The title compound, C26H24ClN3O3, was prepared by the reaction of 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one and 4-(4-chlorobenzyloxy)-3-methoxybenzaldehyde. The vanillin group makes dihedral angles of 6.21 (10) and 48.05 (6)°, respectively, with the pyrazolone and chlorobenzene rings. The crystal packing is governed by C—H...O hydrogen bonds and C—H...π and π–π interactions.
1-(4-Nitrophenyl)-3,5-diphenyl-4,5-dihydro-1H-pyrazole acetone hemisolvate
Authors: Ge Wen-Zhong
Published: July 2006

The asymmetric unit of the title compound, C21H17N3O2·0.5C3H6O, is composed of two independent but similar molecules. The pyrazole ring in each molecule is almost planar and the N—N bond lengths in the pyrazole rings are 1.384 (2) and 1.385 (2) Å.
1,4-Dideoxy-2,3-O-isopropylidene-N-[3-(3-nitrobenzoylamino)benzoyl]-1,4-imino-D-talitol
Authors: Yu Chu-Yi , Fu Ying
Published: July 2006

The title compound, C26H29N3O8, has two molecules in the asymmetric unit. Molecules are linked into chains by N—H...O hydrogen bonds, and C—H...O interactions are observed between chains.
Ethylenediaminium pyridine-2,5-dicarboxylate dihydrate
Authors: Smith Graham , Wermuth Urs D. , Young David J. , Healy Peter C.
Published: July 2006

The title compound, C2H10N2
2+·C7H3NO4
2−·2H2O, forms a three-dimensional hydrogen-bonded framework structure in which both of the amine groups of ethylenediamine are protonated and participate in a total of six hydrogen-bonding interactions with carboxylate O-atom acceptors of the anions as well as the water molecules. The cations lie on crystallographic inversion centres and adopt extended conformations, while the anions have twofold rotational symmetry. This results in the pyridine N atom and its ortho-related CH group being disordered over two 50% occupancy sites.
4-Methylbenzamide oxime
Authors: Wang Hai-Bo , Yan Xiao-Chen , Liu Zhi-Qian
Published: July 2006

The title compound, C8H10N2O, is a derivative of benzonitrile. It crystallizes with two molecules per asymmetric unit. There are intramolecular N—H...O hydrogen bonds, as well as intermolecular N—H...O and O—H...N hydrogen-bond interactions.
A thiophene-based azacryptand Mannich base: 18,24-bis(p-tolylsulfonamido)-2,5,8,11,21-pentaoxa-15,27-dithia-18,24-diazatricyclo[24.3.0.0]nonacosa-1(26),12(16),13,28-tetraene
Authors: Labat Gaël , Halfpenny Joan
Published: July 2006

The title compound, C34H42N2O9S4, is composed of two thiophene rings bridged by an —O—(CH2)2—O—(CH2)2—O— chain and a trisubstitued diamine with pendent tosyl rings. In the crystal structure, the molecules are stabilized by several intra- and intermolecular C—H...O interactions, forming a two-dimensional network arranged in the ac plane.
[N,N,N′-Tris(3-aminopropyl)ethylenediamine-κ5
N]nickel bis(perchlorate)
Authors: Xu Tong-Tao , Xu Xing-You , Wang Da-Qi , Gao Jian , Lu Lu-De
Published: July 2006

The asymmetric unit of the title complex, [Ni(C11H29N5)](ClO4)2, consists of an [Ni(C11H29N5)]2+ cation and two uncoordinated perchlorate anions. The NiII atom is five-coordinated in a slightly distorted square-pyramidal geometry, with four of the N atoms forming the basal plane and the fifth N atom in the apical position. The complex shows a three-dimensional network structure assembled by intermolecular hydrogen bonds.
4-Fluoro-N′-(4-fluoro-3-phenoxybenzoyl)-3-phenoxybenzohydrazide
Authors: Chopra Deepak , Mohan T. P. , Vishalakshi B.
Published: July 2006

In the title compound, C26H18F2N2O4, the dihedral angle between the amide groups is 57.1 (3)°. The crystal structure is stabilized by N—H...O hydrogen bonds and C—H...π interactions.
{μ-2-[1-(N,N-Dimethylamino)ethyl]ferrocene-1,1′-diylbis(diphenylphosphine)-κ2
P:P′}bis[thiocyanatogold(I)]
Authors: Sam Zolisa A. , Elmroth Sofi K. C. , Roodt Andreas , Muller Alfred J.
Published: July 2006

The title compound, [Au2Fe(C38H37NP2)(SCN)2], is a dinuclear gold(I) complex containing an unsymmetrical bidentate ferrocenyl–phosphine ligand. Selected geometrical parameters for the compound are Au—P = 2.265 (2) and 2.260 (3) Å, Au—S = 2.327 (3) and 2.313 (3) Å, and P—Au—S = 175.61 (9) and 176.86 (9)°.
3,5-Dichloro-6-morpholinopyridin-2-yl diethyl thiophosphate
Authors: Zheng Hui , Liu Yun-Kui , Xu Dan-Qian , Xu Zhen-Yuan
Published: July 2006

In the title compound, C13H19Cl2N2O4PS, the morpholine ring adopts a chair conformation. The P=S bond distance is 1.9050 (8) Å.
μ-Benzene-1,4-dicarboxylato-bis[chloro(dipyrido[3,2-a:2′,3′-c]phenazine)copper(II)]
Authors: Che Guang-Bo , Xu Zhan-Lin , Liu Chun-Bo
Published: July 2006

In the title compound, [Cu2Cl2(C8H4O4)(C18H10N4)2], the CuII atom is four-coordinated by two N atoms from one bidentate dipyrido[3,2-a:2′,3′-c]phenazine ligand, one Cl− anion and one O atom from the benzene-1,4-dicarboxylate ligand. The complete benzene-1,4-dicarboxylate ligand is generated by inversion symmetry, leading to a dinuclear complex. Neighbouring molecules interact through π–π stacking, resulting in a two-dimensional supramolecular structure.
(E)-4-[(4-Chlorophenyl)diazenyl]-2-isopropylphenol
Authors: Atalay Şehriman , Petek Hande , Ocak Ískeleli Nazan , Albayrak Çiğdem , Ağar Erbil
Published: July 2006

In the title compound, C15H15ClN2O, the aromatic rings adopt a trans configuration with respect to the N=N bond, as found for other diazene derivatives. The crystal structure is stabilized by intermolecular O—H...N hydrogen bonds, forming a polymeric chain along the c axis.
3-(2,4-Dichlorophenyl)-1-(4-methylphenyl)prop-2-en-1-one
Authors: Patil P. S. , Teh Jeannie Bee-Jan , Fun Hoong-Kun , Razak Ibrahim Abdul , Dharmaprakash S. M.
Published: July 2006

The title compound, C16H12Cl2O, exhibits second-order nonlinear optical properties as it crystallizes in a non-centrosymmetric space group. The dihedral angle between the benzene rings is 34.02 (6)°. Intermolecular C—H...O interactions link the molecules to form chains along the c axis.
Propofol/remifentanil vs sevoflurane/remifentanil for long lasting surgical procedures: a randomised controlled trial
Authors: Höcker J. , Tonner P. H. , Böllert P. , Paris A. , Scholz J. , Meier‐Paika C. , Bein B.
Published: July 2006

We compared the haemodynamics, emergence and recovery characteristics of total intravenous anaesthesia using propofol/remifentanil with sevoflurane/remifentanil anaesthesia, under bispectral index guidance, in 103 patients undergoing surgical procedures lasting > 3.5 h. Time to tracheal extubation was significantly shorter in the propofol group than in the sevoflurane group (mean (SD) 8.3 (3.5) min vs 10.8 (4.6) min, respectively; p = 0.0024), but further recovery was comparable in both groups. There were no significant differences in haemodynamic parameters, intensity of pain or postoperative nausea and vomiting. During and after anaesthesia of comparable depth for long lasting surgical procedures, both propofol/remifentanil and sevoflurane/remifentanil enable haemodynamic stability and fast emergence. The shorter time to extubation in the propofol group does not offer a relevant clinical advantage.
Successful resuscitation of a patient with ropivacaine‐induced asystole after axillary plexus block using lipid infusion*
Authors: Litz R. J. , Popp M. , Stehr S. N. , Koch T.
Published: July 2006

Ropivacaine 1% 40 ml was mistakenly injected as part of an axillary plexus block in an 84‐year‐old woman. After 15 min the patient complained of dizziness and drowsiness and developed a generalised tonic‐clonic seizure followed by an asystolic cardiac arrest. After 10 min of unsuccessful cardiopulmonary resuscitation, a bolus of 100 ml of Intralipid 20% (2 ml.kg−1) was administered followed by a continuous infusion of 10 ml.min−1. After a total dose of 200 ml of Intralipid 20% had been given spontaneous electrical activity and cardiac output was restored. The patient recovered completely. We believe the cardiovascular collapse was secondary to ropivacaine absorption following the accidental overdose. This case shows that lipid infusion may have a beneficial role in cases of local anaesthetic toxicity when conventional resuscitation has been unsuccessful.
Neurotransmitter receptor expression and activity during neuronal differentiation of embryonal carcinoma and stem cells: from basic research towards clinical applications
Authors: Ulrich H. , Majumder P.
Published: July 2006

Abstract.  Embryonal carcinoma and embryonic stem cells have served as models to understand basic aspects of neuronal differentiation and are promising candidates for regenerative medicine. Besides being well characterized regarding the capability of embryonal carcinoma and embryonic stem cells to be precursors of different tissues, the molecular mechanisms controlling neuronal differentiation are hardly understood. Neuropeptide and neurotransmitter receptors are expressed at early stages of differentiation prior to synaptogenesis, triggering transient changes in calcium concentration and inducing neurone‐specific gene expression. In vitro neuronal differentiation of embryonal carcinoma and embryonic stem cells closely resembles early neuronal development in vivo. Murine P19 EC cells are a well‐characterized model for in vitro differentiation, which upon treatment with retinoic acid differentiate into neurones. Expression and activity of various receptor proteins is regulated during their differentiation. Stimulation of kinin‐B2, endothelin‐B, muscarinic acetylcholine, and N‐methyl‐D‐aspartate receptors results in transient increases of intracellular free calcium concentration [Ca2+]i in P19 cells undergoing neuronal differentiation, whereas embryonal cells do not respond or show a smaller change in [Ca2+]i than differentiating cells. Receptor inhibition, as studied with the example of the kinin‐B2 receptor, aborts neuronal maturation of P19 cells, demonstrating the crucial importance of B2 receptors during the differentiation process. Future success in obtaining desired neuronal phenotypes from pluripotent cells in vitro may offer new therapeutic perspectives for curing genetic and acquired dysfunctions of the developing and adult nervous system.