bluuebunny/crossref_metadata_2025 huggingface dataset:
3-Deoxy-D-galactono-1,4-lactone (3-deoxy-D-xylo-hexono-1,4-lactone)
Authors: Punzo Francesco , Watkin David J. , Hotchkiss David , Fleet George W. J.
Published: April 2006

On the basis of the known absolute configuration of D-galactose, the structural study of 3-deoxy-D-xylo-galactono-1,4-lactone, C6H10O5 a valuable synthetic intermediate, allowed the unambiguous confirmation that the chiral centre at position 2 has the R configuration. This centre is formed during synthesis of the title compound from D-galactose under environmentally friendly conditions. Three symmetry-independent intermolecular hydrogen bonds link the molecules into layers parallel to the ac plane.
5,7-Dimethyl-1,2,4-triazolo[1,5-a]pyrimidine
Authors: Odabaşoğlu Mustafa , Büyükgüngör Orhan
Published: April 2006

The molecules in the title compound, C7H8N4, are linked into sheets by a combination of C—H...N hydrogen bonds and π–π interactions. The hydrogen bonds generate two-dimensional networks with a C(6) chain motif. There are two planar symmetry-independent molecules in the asymmetric unit, with a dihedral angle of 4.29 (8)° between their least-squares mean planes.
Methyl 2,6-bis(4,6-dimethoxypyrimidin-2-yloxy)benzoate
Authors: Li Yuan-Xiang , Luo Yan-Ping
Published: April 2006

In the title compound, C20H20N4O8, there are intermolecular C—H...O hydrogen bonds and π–π stacking interactions.
3-(3-Hydroxyphenyl)-1-(4-nitrophenyl)prop-2-en-1-one
Authors: Qiu Xiao-Yang , Liu Wei-Sheng , Zhu Hai-Liang
Published: April 2006

The molecule of the title compound, C15H11NO4, is almost planar and displays a trans configuration with respect to the C=C double bond.
20(29)-Lupene-3β,28β-diacetate
Authors: Mohamed Ietidal Eltahir , Choudhary M. Iqbal , Ali Shamsher , Anjum Shazia , Atta-ur-Rahman
Published: April 2006

The triterpene 20(29)-lupene-3β,28β-diacetate, C34H54O4, was obtained by acetylation of naturally occurring betulin. The cyclopentane ring adopts a twisted envelope conformation and the cyclohexane rings are all in chair conformations. The molecular structure is stabilized only by weak intramolecular C—H...O hydrogen bonds.
1-Benzoyl-3-(3,4-dichlorophenyl)thiourea
Authors: Khawar Rauf M. , Badshah Amin , Flörke Ulrich , Saeed Aamer
Published: April 2006

In the molecule of the title compound, C14H10Cl2N2OS, the dihedral angle between the two aromatic rings is 38.58 (6)°. In the crystal structure, centrosymmetric dimers are formed via intermolecular N—H...S hydrogen bonds [N...S = 3.4798 (16) Å]. These dimeric units are, in turn, connected by weak intermolecular C—H...O hydrogen bonds, forming one-dimensional chains along [100].
Bis[1-(4-bromobenzyl)-3-methylpyrazinium] bis(1,2-dicyanoethene-1,2-dithiolato-κ3
S,S′)nickelate(II)
Authors: Ni Chun-Lin , Liu Ming-Guo
Published: April 2006

The title compound, (C12H12BrN2)[Ni(C4N2S2)2], is an ion-pair complex, isostructural with the Cl-containing analogue. The anion lies on an inversion centre and the NiII ion is coordinated by four S atoms, giving the expected square-planar coordination geometry. The cation adopts a conformation where the benzene and pyrazine rings are twisted with respect to the plane of the central C—C—N chain which links them. C—H...S and π–π interactions between cations and anions are observed in the crystal structure, and C—H...π interactions mediate the formation of ribbons of cations.
4-Amino-6-tert-butyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one
Authors: Sridhar B. , Ravikumar K. , Yathirajan H. S. , Anilkumar H. G. , Narayana B.
Published: April 2006

In the title compound, C7H12N4OS, the triazine ring is planar. The crystal structure is stabilized by intermolecular N—H...O hydrogen bonds which link the molecules into chains running along the c axis.
catena-Poly[1,2-ethylenediammonium [[nitratouranyl]-μ3-phosphito] dihydrate]
Authors: Xu Jian-Fu , Chen Ping , Zhuang Rubin , Huang Chang-Cang , Zhang Han-Hui
Published: April 2006

The crystal structure of the title compound, {(C2H10N2)[U(HPO3)(NO3)O2]·2H2O}
n
, consists of polymeric uranyl complex anions, ethylenediammonium cations and uncoordinated water molecules. The polymeric uranyl complex anion displays a ladder-like structure, each UO2 unit being coordinated by three phosphite dianions and one nitrate anion with a pentagonal–bipyramidal geometry. The ethylenediammonium cation is located on an inversion center and is hydrogen bonded with the uranyl complex.
[Tetrakis(3-chlorophenyl)porphyrinato]zinc(II)
Authors: Lipstman Sophia , Muniappan Sankar , Goldberg Israel
Published: April 2006

The title compound, [Zn(C44H28Cl4N4)], is a four-coordinate zinc–porphyrin complex, with 3-chlorophenyl substituents at the meso positions of the planar metalloporphyrin core. The molecules are located on crystallographic inversion centres, exhibiting partial orientational disorder of the aryl residues. The crystal packing is stabilized by van der Waals forces and intermolecular Cl...Cl interactions.
Hexaaquairon(III) perchlorate trihydrate
Authors: Fischer Andreas
Published: April 2006

A single crystal of commercially available `iron(III) perchlorate hexahydrate' has been structurally characterized and shown to be hexaaquairon(III) tris(perchlorate) trihydrate, [Fe(H2O)6](ClO4)3·3H2O. The structure contains [Fe(H2O)6]3+ complex ions, charge-balancing perchlorate ions and three water molecules of crystallization per Fe atom. A network of O—H...O hydrogen bonds helps to stabilize the crystal packing. Fe, Cl and one water O atom occupy special positions with site symmetries \overline{3}, 2, and 2, respectively.
Octabutyl-1κ2
C,2κ2
C,3κ2
C,4κ2
C-di-μ2-3,5-dinitrobenzoato-1:2κ2
O:O′;3:4κ2
O:O′-bis(3,5-dinitrobenzoato)-1κO,4κO-di-μ3-oxo-1:2:3κ3
O:O:O;2:3:4κ3
O:O:O-tetratin(IV)
Authors: Li Fa-Hui , Yin Han-Dong , Gao Zhong-Jun , Wang Da-Qi
Published: April 2006

The title compound, [Sn4(C4H9)8(C7H3N2O6)4O2], is a cluster built up by inversion symmetry around the central Sn2O2 ring. Both unique SnO3C2 centres have distorted trigonal–bipyramidal geometry with O atoms in the axial positions.
Bis[4-(2-methyl-2-propenyl)piperazin-1-yl]methane
Authors: Ricken Stefan , Schürmann Markus , Preut Hans , Eilbracht Peter
Published: April 2006

The title compound, C17H32N4, contains two piperazine heterocycles, which are methylene bridged. The rings have chair conformations, with all substituents equatorial.
Dicatharanthinium (2R,3R)-tartrate trihydrate
Authors: Pei Sai-Feng , Sun Cui-Rong , Hu Mao-Lin , Pan Yuan-Jiang
Published: April 2006

The title salt, bis(methyl 3,4-didehydroibogamin-6-ium-18-carboxylate) (2R,3R)-tartrate trihydrate, 2C21H25N2O2
+·C4H4O6
2−·3H2O, contains two catharanthinium cations, a (2R,3R)-tartrate anion and three water solvent molecules. The cation contains an indole ring system with a planar conformation and a seven-membered nitrogen-containing ring with a distorted chair conformation. A network of O—H...O and N—H...O intermolecular hydrogen bonds stabilizes the crystal packing.
Bis(N,N-dimethylethane-1,2-diamine)dithiocyanatocobalt(III) perchlorate: a redetermination
Authors: Sun Yu-Xi , Gu Ke-Qiang , Yang Guang , Xie Fei , Sun Yun-Jin
Published: April 2006

The crystal structure of the title compound, [Co(NCS)2(C4H12N2)2]ClO4, has been reported previously by Eminger, Fallab, Zehnder & Dobler [Helv. Chim. Acta (1992), 75, 1245–1250], with an R value of 0.074. However, no coordinates are available. We present here a redetermination of this structure using new intensity data. The CoIII atom, lying on an inversion centre, is six-coordinate in an octahedral geometry. The perchlorate anion, located on a twofold axis, is disordered over two orientations.
3-Methyl-5-(4-oxo-4H-chromen-3-ylmethylene)-1,3-thiazolidine-2,4-dione
Authors: Aslantaş Mehmet , Ceylan-Ünlüsoy Meltem , Ertan Rahmiye , Kendi Engin , Büyükgüngör Orhan
Published: April 2006

In the title compound, C14H9NO4S, the benzopyran and thiazolidine ring systems are each planar. The thiazolidine ring makes a dihedral angle of 3.84 (4)° with the benzopyran ring system. The molecular structure is stabilized by intramolecular C—H...O interactions.
1-Benzyl-2-[(2RS,3SR,6SR)-3-methyl-4-oxo-2,6-diphenylpiperidin-1-ylcarbonyl]-2-phenylethenyl phenylacetate
Authors: Thanikasalam Kanagasabapathy , Jeyaraman Ramasubbu , Panchanatheswaran Krishnaswamy , Low John N. , Glidewell Christopher
Published: April 2006

Molecules of the title compound, C42H37NO4, are weakly linked into chains by a C—H...O hydrogen bond and pairs of such chains are linked by a single aromatic π–π stacking interaction.
1,1′-(Butane-1,4-diyl)bis(1H-benzimidazol-3-ium) diiodo(pyridine-2,6-dicarboxylato-κ3
O,N,O′)mercurate(II)
Authors: Bao Tong-Hua , Hou Zhen-Yu
Published: April 2006

In the title complex, (C18H20N4)[HgI2(C7H3NO4)], the Hg atom exists in a distorted trigonal–bipyramidal geometry formed by two I atoms, one pyridine N and two carboxylate O atoms from a chelating 2,6-pyridinedicarboxylate ligand. Extensive hydrogen bonding between the carboxylate groups and the 1,1′-(butane-1,4-diyl)bis(1H-benzimidazol-3-ium) ion is present in the structure, as well as π–π stacking interactions. The cation has a crystallographic centre of symmetry. In the anion, a crystallographic twofold rotation axis coincides with the Hg–N bond.
Hexaaqua-1κ3
O,3κ3
O-tri-μ-cyano-1:2κ2
N:C;2:3κ2
C:N;3:4κ2
N:C-nonacyano-2κ4
C,4κ5
C-pentakis(N,N-dimethylacetamide)-1κ3
O,3κ2
O-diiron(III)diytterbium(III) dihydrate
Authors: Svendsen Helle , Overgaard Jacob , Chevalier Marie A. , Iversen Bo B.
Published: April 2006

The title compound, [Fe2Yb2(CN)12(C4H9NO)5(H2O)6]·2H2O, is a tetranuclear complex, where the four metal centres are connected through three cyano bridges, the iron centres making one and two bridges, respectively. Each Fe atom is surrounded by six cyano ligands, forming almost ideal octahedra. The two Yb atoms have different ligand environments; both are coordinated by seven ligands, consisting of water molecules, dimethylacetamide (DMA) solvent and cyano groups, but not in the same ratio. Four of the five DMA molecules show various degrees of common structural disorder. The asymmetric unit also includes two solvent water molecules, which take part in hydrogen bonding, forming an extended network of tetramers.
3,5-Bis(salicylideneamino)-1H-1,2,4-triazole methanol solvate
Authors: Cheng Ru-Mei , Li Yi-Zhi , Ou Sheng-Ju , Chen Xue-Tai
Published: April 2006

In the crystal structure of the title compound, C16H13N5O2·CH4O, there are intra- and intermolecular hydrogen bonds. Molecules form dimers, which are extended to afford a ribbon structure. These ribbons are further packed, forming a three-dimensional grid structure.
Pentaaqua(pyridine-3,5-dicarboxylato-κN)nickel(II) dihydrate
Authors: Zhang Xiang-Pei , Yang Guang , Ng Seik Weng
Published: April 2006

In the title compound, [Ni(C7H3NO4)(H2O)5]·2H2O, the pyridine-3,5-dicarboxylate dianion bonds through its N atom to Ni, the octahedral geometry of the latter being completed by five water molecules. Adjacent complex molecules are linked through the two non-coordinated water molecules, forming a three-dimensional, tightly held, hydrogen-bonded network.
14-Acetyl-20-ethyl-1,8-dihydroxy-16,18-dimethoxylycoctonine
Authors: Ahmad Manzoor , Ali Shamsher , Shaheen Farzana , Anjum Shazia , Choudhary M. Iqbal
Published: April 2006

The title compound (C25H39NO6), a polycyclic diterpenoid alkaloid, has been isolated from Delphinium roylei Munz. Two cis-fused ring junctions are observed between cyclohexane A and piperidine E rings and between cyclohexane B and cyclopentane C rings. Two trans-fused ring junctions involve cyclohexane A and cyclopentane B rings and also piperidine E and cyclopentane F rings. Cyclopentane ring F is in a twist conformation, while the other cyclopentane ring, C, forms an envelope conformation. Piperidine ring E is in a chair conformation, the two cyclohexane rings A and B adopt twist–boat conformations and cyclohexane ring D is in a screw-boat conformation. Of the five substituents, only one is α-oriented. The molecules are packed along the c axis in layers parallel to the ab plane and stabilized by weak inter- and intramolecular O—H...O and O—H...N hydrogen bonds.
Poly[[(2,2′-bipyridine-κ2
N:N′)cadmium(II)]-μ3-5-hydroxyisophthalato-κ4
O,O′:O′′:O′′′]
Authors: Zhuo Xin , Wang Zuo-Wei , Li Yi-Zhi , Zheng He-Gen
Published: April 2006

In the molecule of the title compound, [Cd(C8H4O5)(C10H8N2)]
n
, the Cd atom is coordinated by two N and four O atoms of 2,2′-bipyridine and hydroxyisophthalate ligands, respectively, in a highly distorted octahedral geometry. 5-Hydroxyisophthalate acts as a tetradentate ligand, with one carboxylate group bidentate to one Cd atom and the other carboxylate group bidentate to two further Cd atoms, resulting in the formation of two-dimensional sheets.
Dibenzoato(1,10-phenanthroline)zinc(II)
Authors: Fu Xu-Cheng , Wang Xiao-Yan , Li Ming-Tian , Wang Cheng-Gang
Published: April 2006

In the molecule of the title compound, [Zn(C7H5O2)2(C12H8N2)], the coordination about the ZnII center is best described as distorted octahedral. The crystal structure is stabilized by π–π stacking of neighboring phenyl groups.
1-Benzoyl-3-(4-chlorophenyl)thiourea
Authors: Khawar Rauf M. , Badshah Amin , Flörke Ulrich , Saeed Aamer
Published: April 2006

In the crystal structure of the title compound, C14H11ClN2OS, the dihedral angle between the two aromatic ring planes is 43.93 (6)°. The crystal packing shows dimers formed by intermolecular N—H...S hydrogen bonds which are stacked along [100].
1-Chloro-3,4-dimethyl-1-phenyl-3-phospholenium chloride
Authors: Scheibitz Matthias , Lerner Hans-Wolfram , Bolte Michael
Published: April 2006

Both ions of the title compound, C12H15ClP+·Cl−, are located on a crystallographic mirror plane. The phospholene ring adopts an envelope conformation. The crystal structure is stabilized by C—H...Cl hydrogen bonds.
An indium(III) complex with pyridine-2,6-dicarboxylate
Authors: Zhang Rong-Chang , Yu Chun-Hui
Published: April 2006

In the title compound, dimethylammonium diaquabis(pyridine-2,6-dicarboxylato-κ3
O
2,N,O
6)indate(III), (C2H8N)[In(C7H3NO4)2(H2O)2], the central InIII ion is eight-coordinated by two pyridine-2,6-dicarboxylate ligands and two water molecules. The water molecules, the dimethylammonium ion and the carboxylate O atoms interact through hydrogen bonds, forming a three-dimensional supramolecular structure.
2,6-Di-tert-butyl-4-(phenyliminomethyl)phenol
Authors: Yan Xi-Long , Chen Li-Gong , Zeng Tao
Published: April 2006

In the title molecular structure, C21H27NO, the dihedral angle between the phenyl ring and the benzene ring planes is 63.28 (9) Å. It appears that the hydroxy group is prevented from forming a hydrogen bond because of steric hindrance by the tert-butyl groups.
1,4,10,13-Tetraoxa-7,16-diazoniacyclooctadecane bis(hexafluorophosphate): PF6
− acting as a pseudohalide
Authors: Janzen Daron E. , Botros Maikel E. , Helton Gregory P. , VanDerveer Donald G. , Grant Gregory J.
Published: April 2006

In the crystal structure of the title compound, C12H28N2O4
2+·2PF6
−, the center of the diprotonated macrocycle 18N2O4-2H2+ (18N2O4-2H2+ is the 1,4,10,13-tetraoxa-7,16-diazoniacyclooctadecane dication) coincides with a crystallographic inversion center. The structure displays N—H...F interactions between H atoms of the cationic N atoms of the macrocycle and the F atoms of the PF6
− anions. The H...F distances are in the range 2.15 (3)–2.42 (4) Å. The structure is nearly isostructural with the previously determined iodide salt, with PF6
− acting as a pseudohalide anion.
2-(Cyclopentylsulfanyl)-6-(1-naphthoyl)pyrimidin-4(3H)-one
Authors: Ji Lei , Kuang Yun-Yan , Chen Fen-Er , Chen Min-Qin
Published: April 2006

In the structure of the title compound, C20H18N2O2S, the carbonyl group, the naphthyl ring system and the cyclopentyl ring are not in the plane of the pyrimidinyl ring. In the crystal structure, pairs of molecules are connected into dimers via N—H...O hydrogen bonding
3,4-Dimethyl-1-phenylphosphole
Authors: Scheibitz Matthias , Lerner Hans-Wolfram , Bolte Michael
Published: April 2006

The heterocycle of the title compound, C12H13P, is planar and forms a dihedral angle of 78.45 (8)° with the phenyl ring.
(N,N-Diethyldithiocarbamato-κ2
S,S′)bis(1,10-phenanthroline)sodium(I)
Authors: Mirkovic Tihana , Nair Sreekumari P. , Scholes Gregory D. , Lough Alan J.
Published: April 2006

In the title molecule, [Na(C5H10NS2)(C12H8N2)2], which has crystallographic twofold symmetry, the coordination geometry of the Na atom is intermediate between octahedral and trigonal prismatic, coordinated by two S atoms of an N,N-diethyldithiocarbamate ligand and four chelating N atoms of two 1,10-phenanthroline ligands. In the crystal structure, weak C—H...S and π–π stacking interactions form chains of rings.
Tetraaquabis(3-pyridinecarboxamide-κN)copper(II) bis(2,4,6-trinitrophenolate)
Authors: Zeng Ming-Hua , Zhu Li-Hong , Liang Hong , Ng Seik Weng
Published: April 2006

The Cu atom in the title compound, [Cu(C6H6N2O)2(H2O)4](C6H2N3O7)2, exists in an all trans-O4N2Cu octahedron; the anion interacts indirectly with the cation through the coordinated water molecules. Hydrogen bonds link the cations and anions into a three-dimensional network.
ent-3β,16-Dihydroxyisopimar-7-ene-2,15-dione: a new tricyclic diterpenoid from the roots of Euphorbia wallichii
Authors: Pan Li , Yu Kai-Bei , Peng Shu-Lin , Zhou Yan , Ding Li-Sheng
Published: April 2006

The title compound, C20H30O4, is an ent-isopimarane diterpenoid which was isolated from the roots of Euphorbia wallichii. The molecule contains three six-membered rings, which adopt chair and half-chair conformations. In addition to an intramolecular O—H...O hydrogen bond, an intermolecular O—H...O hydrogen bond connects the molecules into chains.
(E)-1-(4-Chlorophenyl)-3-(4-methoxyphenyl)prop-2-en-1-one
Authors: Qiu Xiao-Yang , Yang Sen-Lin , Liu Wei-Sheng , Zhu Hai-liang
Published: April 2006

In the title molecule, C16H13ClO2, all bond lengths and angles show normal values. The two benzene rings make a dihedral angle of 21.0 (4)°. The crystal packing is stabilized by van der Waals forces.
(E)-4-(Isonicotinoylhydrazono)pentanoic acid monohydrate
Authors: Wang Yong-Tao , Tang Gui-Mei
Published: April 2006

The title compound, C11H13N3O3·H2O, was synthesized by the reaction of acetopropanoic acid and isonicotinoylhydrazide in ethanol. A three-dimensional network of intermolecular O—H...O, O—H...N and N—H...O hydrogen bonds stabilizes the crystal structure.
(R)-1-Hydroxybutan-2-ammonium (2R,3R)-tartrate monohydrate
Authors: Zhang Yue-Cheng , Bai Guo-Yi , Zeng Tao , Li Jiang-Sheng , Yan Xi-Long
Published: April 2006

In the formation of the title compound, C4H12NO+·C4H5O6
−·H2O, the (R)-2-amino-1-butanol molecule is converted to a cationic form containing a positively charged amino group, and the tartaric acid molecule to a mono- or half-ionized tartrate anion. The structure is stabilized by a three-dimensional network of hydrogen bonds.
A sterically crowded molecule: (E)-3,4-bis(bromomethyl)-2,2,5,5-tetramethylhex-3-ene
Authors: Hänel Ralf , Bubenitschek Peter , Hopf Henning , Jones Peter G.
Published: April 2006

The title compound, C12H22Br2, displays crystallographic inversion symmetry. Bond lengths C=C = 1.352 (4) Å and Csp
2—Csp
3 = 1.574 (3) Å are interpreted as symptoms of steric overcrowding. Molecules are linked into chains parallel to [101] by Br...Br interactions of 3.4275 (9) Å.
5-Fluorouracil-1-acetic acid
Authors: Qu Jian-Qiang , Qu Ling , Jia Xiao-Fei
Published: April 2006

In the title compound, C6H5FN2O4, the acetic acid group lies out of the pyrimidine plane. In the crystal structure, molecules are connected by intermolecular N—H...O, O—H...O and C—H...O hydrogen bonds, forming a three-dimensional network.
Bis(2,4,6-triamino-1,3,5-triazin-1-ium) bis(pyridine2,6-dicarboxylato)zincate(II) decahydrate
Authors: Aghajani Zahra , Sharif Mahboubeh A. , Aghabozorg Hossein , Naderpour Azam
Published: April 2006

The reaction of zinc(II) nitrate tetrahydrate with the proton-transfer compound LH2 [LH2 is (tataH)2(pydc), where tata is 2,4,6-triamino-1,3,5-triazine (melamine) and pydcH2 is pyridine-2,6-dicarboxylic acid] in aqueous solution leads to the formation of the title compound, (tataH)2[Zn(pydc)2].10H2O or (C3H7N6)2[Zn(C7H3O4)2].10H2O. The ZnII atom has a distorted octahedral coordination environment. Extensive intermolecular N—H...O and O—H...O hydrogen bonding involving the tataH and pydc ligands and the water molecules forms an extended three-dimensional network.
5-(5-Ethyl-1,3,4-thiadiazol-2-ylaminomethylene)-2,2-dimethyl-1,3-dioxane- 4,6-dione
Authors: Silva Luiz Everson da , Joussef Antonio Carlos , Andrighetti-Fröhner Carla Regina , Simões Cláudia Maria Olivra , Bortoluzzi Adailton José
Published: April 2006

In the title compound, C11H13N3O4S, the thiadiazole ring is nearly planar, while the 1,3-dioxane-4,6-dione ring exhibits a half-chair conformation. The NH group makes one intramolecular contact with a carbonyl group, forming a six-membered ring. The same functional group is involved in an intermolecular N—H...N hydrogen bond.
2-[4-(Diethylamino)-2-hydroxybenzoyl]-3,4,5,6-tetrafluorobenzoic acid
Authors: Yan Fan-Yong , Ge Feng-Yan , Jin-Peng Wang , Xi-Long Yan , Guo-Yi Bai
Published: April 2006

The title compound, C18H15F4NO4, is an intermediate in the synthesis of tetrafluororhodamine. The dihedral angle between the benzene rings is 73.5 (3)°. There is an intramolecular O—H...O hydrogen bond. In addition, the structure is stabilized by intermolecular O—H...O hydrogen bonds.
[N,N′-Bis(2-oxido-1-naphthylmethylidene)propane-1,3-diamine]manganese(II)
Authors: Zhang Yu-Liang
Published: April 2006

In the title mononuclear manganese(II) complex, [Mn(C25H20N2O2)], the Mn atom and the central methylene group of the propanediamine fragment of the ligand lie on a mirror plane. The four-coordinate Mn atom binds to two N and two O atoms of the ligand, forming a square-planar geometry.
3,6-Dioxaoctane-1,8-diammonium oxalate
Authors: Odabaşoğlu Mustafa , Büyükgüngör Orhan
Published: April 2006

The title compound, C6H18N2O2
2+·C2O4
2−, crystallizes with one half-cation and one half-anion in the asymmetric unit. It contains cyclic N—H...O hydrogen-bonded rings involving 3,6-dioxaoctane-1,8-diammonium and oxalate ions, forming a three-dimensional network.
9-(p-Tolylsulfonyl)-9H-carbazole
Authors: Li Ning , Huang Peng-Mian , Xiong Xiao-Li , Cai Qiang
Published: April 2006

Two independent molecules constitute the asymmetric unit of the title compound, C19H15NO2S, which was synthesized by N-alkylation of 4-methylbenzenesulfonyl chloride with carbazole. The carbazole ring system is essentially planar and forms a dihedral angle with the benzene ring of 85.1 (7)° [83.9 (7)° for the second molecule]. In the crystal structure, weak C—H...O interactions are observed.
3-(2-Furyl)-1-(4-methoxyphenyl)prop-2-en-1-one
Authors: Teh Jeannie Bee-Jan , Patil P. S. , Fun Hoong-Kun , Razak Ibrahim Abdul , Shettigar Venkataraya , Dharmaprakash S. M.
Published: April 2006

In the title molecule, C14H12O3, the dihedral angle between the benzene and furan rings is 9.22 (7)°. The crystal structure is stabilized by π...π and by C–H...π interations.
Dimethyl(2-oxido-1-naphthaldehydeisonicotinoylhydrazonato)tin(IV) methanol solvate
Authors: Chen Shao-Wen , Yin Han-Dong , Wang Da-Qi
Published: April 2006

In the molecular structure of the title complex, [Sn(CH3)2(C17H11N3O2)]·CH3OH, the Sn atom is in a distorted trigonal–bipyramidal coodination, with Sn—O distances of 2.099 (6) and 2.128 (6) Å. A methanol solvent molecule is O—H...N hydrogen bonded to the complex molecule.
1-(4-Bromophenyl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one
Authors: Ng Shea-Lin , Shettigar Venkataraya , Razak Ibrahim Abdul , Fun Hoong-Kun , Patil P. S. , Dharmaprakash S. M.
Published: April 2006

Each of the two unique molecules of the title compound, C17H15BrO3 is essentially planar. The crystal structure is stabilized by intramolecular and intermolecular C—H...O hydrogen bonds. These interactions link the symmetry-related molecules into infinite chains along the c axis. These chains are then stacked parallel to the b axis.
Aragonite-type lanthanum orthoborate, LaBO3
Authors: Nakatsuka Akihiko , Ohtaka Osamu , Arima Hiroshi , Nakayama Noriaki , Mizota Tadato
Published: April 2006

The crystal structure of the low-temperature (LT) modification of LaBO3 has been redetermined from single-crystal X-ray data; the resulting structure confirms the previous study [Abdullaev, Dzhafarov & Mamedov (1976). Azerbaidzhanskii Khim. Zh. pp. 117–120], but with improved precision. LT-LaBO3 crystallizes in space group Pnma and adopts the aragonite-type structure. Except for one O atom, which is situated on a general position, all other atoms (one La, one B and a second O atom) lie on mirror planes. The structure is composed of LaO9 polyhedra with an average La—O distance of 2.593 Å and trigonal BO3 groups with an average B—O distance of 1.373 Å. Slight anisotropies of the thermal vibrations of La and B atoms suggest that the electrostatic La...La and La...B interactions across the shared edges are weak.
A new manganese(II) complex with the m-aminobenzoate anion: [aqua(3-aminobenzoato-κO)bis(1,10-phenanthroline-κ2
N,N′)manganese(II)] 3-aminobenzoate 4.5-hydrate
Authors: Zhang Wen-Zhi
Published: April 2006

In the title compound, [Mn(C12H8N2)2(C7H6NO2)(H2O)](C7H6NO2)·4.5H2O or [Mn(phen)2(L)(H2O)]L·4.5H2O, where HL is m-aminobenzoic acid and phen is 1,10-phenanthroline, the central MnII atom is six-coordinated by four N atoms from two distinct phen ligands, one O atom from a carboxylate ligand and one O atom from a water molecule. The L
− ions and water molecules are linked through an extended network of hydrogen bonds to form a three-dimensional supramolecular structure.
Triaqua(2,2′-bipyridine)maleatonickel(II) monohydrate
Authors: Li Mingtian , Fu Xucheng , Wang Chenggang
Published: April 2006

In the title complex, [Ni(C4H2O4)(C10H8N2)2(H2O)3]·H2O, the Ni atom has a distorted NiO4N2 octahedral coordination, formed by one maleate dianion, one bipyridine and three water molecules. The crystal structure is stabilized by π–π stacking and hydrogen-bonding interactions.
N-Benzylindole-2,3-dione (N-benzylisatin)
Authors: Akkurt Mehmet , Türktekin Sevim , Jarrahpour Ali Asghar , Khalili Dariush , Büyükgüngör Orhan
Published: April 2006

The title molecule, C15H11NO2, is non-planar, the dihedral angle between the isatin group and the phenyl ring being 87.08 (5)°. The crystal structure is stabilized by C–H...O hydrogen bonding interactions.
(2S,3S,5R)-2-(3-Chlorophenyl)-2-hydroxy-3,5-dimethyl-2-morpholinium chloride
Authors: Hu Ai-Xi , Cao Gao , Xiao Xin-Rong , Wu Hong-Yan
Published: April 2006

The title compound, C12H17ClNO2
+·Cl−, was synthesized by the reaction of (R)-(−)-2-amino-1-propanol and 2-bromo-1-(3-chlorophenyl)propan-1-one. The morpholine ring has a chair conformation; the 3,5-dimethyl and 2-hydroxy groups are on the same side of the morpholine ring with the 2-(3-chlorophenyl) group on the opposite side.
Diimidazolium aquapentakis(nitrato)neodymate(III)
Authors: Zhang Hui , Wu Yanmei , Fang Liang
Published: April 2006

The asymmetric unit of the title compound, (Him)2[Nd(NO3)5H2O] (Him is 1H-imidazolium, C3H5N2), contains one [Nd(NO3)5H2O]2− anion and two imdidazolium cations. Nd is coordinated by 11 O atoms. N—H...O and O—H...O hydrogen-bond interactions link cations and anions, forming a three-dimensional network.
5-Benzyl-1-(4-fluorophenyl)-2-phenyl-4,5,6,7-tetrahydro-1H-pyrrolo[3,2-c]pyridine
Authors: Chopra Deepak , Nagarajan K. , Guru Row T. N.
Published: April 2006

In the title compound, C26H23FN2, the dihedral angle between the 4-fluorophenyl ring and the adjacent phenyl ring is 62.3 (1)°. The crystal structure is stabilized by C—H...π interactions.
Bis[4-(1-ethylpropylimino)pentan-2-onato]zinc(II)
Authors: Matthews J.S. , Ouattara T. S. , Butcher R. J.
Published: April 2006

The title compound, [Zn(C10H18NO)2], is a monomeric homoleptic zinc complex. The Zn atom occupies the center of a distorted tetrahedral environment and is coordinated by two O atoms [Zn—O = 1.9468 (9) and 1.9484 (10) Å] and two N atoms [Zn—N = 2.0142 (12) and 2.0149 (11) Å].
trans-Dichlorobis[tris(4-fluorophenyl)phosphine]palladium(II) toluene solvate
Authors: Meijboom Reinout , Muller Alfred , Roodt Andreas , Janse van Rensburg J. Marthinus
Published: April 2006

The title compound, trans-[PdCl2{P(C6H4F)3}2]·C7H8, where P(C6H4F)3 is tris(4-fluorophenyl)phosphine, crystallizes with both molecules in special positions. The trans-[PdCl2{P(C6H4F)3}2] molecule lies on an inversion centre, resulting in a distorted trans square-planar geometry. The Pd—P and Pd—Cl distances are 2.3398 (12) and 2.2955 (13) Å, respectively, and the P—Pd—Cl angle is 87.58 (5)°. The effective cone angle for the tris(4-fluorophenyl)phosphine group was calculated to be 152°. The toluene molecule lies on a twofold rotation axis.
Di-μ2-chloro-bis[(benzyldiphenylphosphine)chloropalladium(II)]
Authors: Meijboom Reinout , Muller Alfred , Roodt Andreas
Published: April 2006

The molecule of the title compound, [Pd2Cl4(C19H17P)2] or [Pd(μ2-Cl)Cl(PPh2Bz)]2, where Bz = CH2Ph, lies on an inversion centre. The Pd atom has a distorted square-planar coordination environment formed by a benzyldiphenylphosphine [Pd—P = 2.2218 (6) Å], a terminal chloride [Pd—Cl = 2.2729 (5) Å] and two bridging chloride ligands. The Pd—Cl bond in the position trans to the phosphine ligand [Pd—Cl = 2.4123 (5) Å] is considerably longer than the Pd—Cl bond in the position trans to the terminal chloride [Pd—Cl = 2.3155 (5) Å].
Bis(1,10-phenanthroline-κ2
N,N′)(sulfato-κ2
O,O′)cadmium(II) 1,2-ethanediol solvate
Authors: Lu Wen-Jie , Zhong Kai-Long , Zhu Yi-Min
Published: April 2006

In the structure of the title compound, [Cd(SO4)(C12H8N2)2]·C2H6O2, the [Cd(SO4)(C12H8N2)2] and C2H6O2 entities are connected by hydrogen bonding. The formula unit lies on a special position of site symmetry 2. The CdII centre is coordinated by four N atoms from two chelating 1,10-phenanthroline ligands and two O atoms from the bidentate sulfate ligand in a distorted octahedral geometry. The two chelating NCCN groups subtend a dihedral angle of 74.50 (9)°.
2,4-Dibenzoyl-3,5-bis(4-methoxylphenyl)-1-phenylcyclohexanol
Authors: Luo Xinxiang , Shan Zixing
Published: April 2006

The title compound, C40H36O5, was synthesized from p-anisaldehyde and acetophenone. The central six-membered ring adopts a chair conformation and most of the bulky side groups are located in equatorial positions. The hydroxyl group is involved in weak intra- and intermolecular hydrogen bonding.
Diethyl [5-acetoxy-3-(2,4-dichlorophenyl)-4,5-dihydroisoxazol-5-yl]phosphonate
Authors: Shang Zhi-Qiang , Chen Ru-Yu , Huang You
Published: April 2006

The title compound, C15H18Cl2NO6P, is composed of an isoxazoline ring and a 2,4-dichlorophenyl ring.
9-Ethyl-3-(9H-9-ethylcarbazol-3-yl)-4-nitro-9H-carbazole
Authors: Asker Erol , Masnovi John
Published: April 2006

In the molecule of the title compound, C28H23N3O2, the nitro group is almost perpendicular to the carbazole ring to which it is attached. The crystal packing is determined by C—H...O and π–π interactions, where the nitrated carbazole ring of one molecule associates in a shifted parallel planar orientation with the centrosymmetrically related non-nitrated carbazole ring of a neighbouring molecule.
Dimethyl {1-[2-(2-fluorophenoxy)acetoxy]ethyl}phosphonate
Authors: Li Yan-Jun , He Hong-Wu
Published: April 2006

The crystal structure of the title compound, C12H16FO6P, is stabilized by intermolecular C—H...O hydrogen bonds.
Di-μ-2-sulfonatobenzoato-bis[aqua(1,10-phenanthroline)copper(II)] trihydrate
Authors: Zhang Wei-Bing , Ruan Shuang-Di , Zhu Shu-Juan , Xiao Hong-Ping , Ye Sai-Ya
Published: April 2006

In the title compound, [Cu2(C7H4O5S)2(C12H8N2)2(H2O)2]·3H2O, each copper(II) atom is coordinated by two N atoms from one 1,10-phenanthroline molecule, two carboxylate O atoms from two 2-sulfonatobenzoato dianions and one aqua O atom in a distorted square pyramidal geometry. The 2-sulfonatobenzoato dianions function as μ2-bridging ligands in the formation of a dinuclear complex. Intermolecular hydrogen-bond interactions link the dinuclear units into a two-dimensional network structure.
N,N′-Bis(9H-fluoren-9-ylidene)benzene-1,4-diamine
Authors: Benya Donna K. , de Freitas Jorge F. , Crundwell Guy , Glagovich Neil M.
Published: April 2006

Molecules of the title compound, C32H20N2, synthesized by the p-toluenesulfonic acid-assisted Schiff base reaction between 9-fluorenone and p-phenylenediamine, are located on centers of inversion.
Octabutyl-1κ2
C,2κ2
C,3κ2
C,4κ2
C-bis(μ2-2,4-dichlorophenoxyacetato)-1:2κ2
O:O′;3:4κ2
O:O′-bis(2,4-dichlorophenoxyacetato)-1κO,4κO-di-μ3-oxo-1:2:3κ3
O:O:O;2:3:4κ3
O:O:O-tetratin(IV)
Authors: Li Fa-Hui , Yin Han-Dong , Huang Wen-Bo , Wang Yu-Wei
Published: April 2006

The title compound, [Sn4(C4H9)8(C8H5Cl2O3)4O2], is a cluster built up by inversion symmetry around the central Sn2O2 ring. Both unique SnO3C2 centres have a distorted trigonal–bipyramidal geometry with the O atoms in axial positions.
Bis(tetraphenylphosphonium) bis(1-carboxybenzene-2,3-diolato-κ2
O,O′)-cis-dioxomolybdate(VI)
Authors: Litos Charalambos , Karaliota Alexandra , Parsons Simon
Published: April 2006

The title compound, (C24H20P)2[Mo(C7H4O4)2O2], contains a distorted octahedral molybdenum(VI) complex having the characteristic cis-MoO2
2+ group and the ligand 2,3-dihydroxybenzoic acid coordinated through the two phenolate O atoms, while the carboxyl group is not deprotonated. No π–π overlap between the benzene rings of the ligands or those of the tetraphenylphosphonium ions is observed.
Bis[2,4,6-triisopropyl-N-(quinolin-8-yl)benzenesulfonamidato-κ2
N,N′]copper(II)
Authors: da Silva Luiz Everson , Joussef Antonio Carlos , Foro Sabine , Schmidt Boris
Published: April 2006

The molecule of the title complex, [Cu(C24H29N2O2S)2], occupies a special position on a twofold axis. The Cu atom has a severely distorted tetrahedral environment formed by two quinoline and two sulfonamide N atoms of two chelate quinolinyl-benzenesulfonamide ligands..
2,3-Dibromo-1-(4-methoxyphenyl)-3-[4-(methylsulfanyl)phenyl]propan-1-one
Authors: Butcher Ray J. , Yathirajan H. S. , Sarojini B. K. , Narayana B. , Mithun A.
Published: April 2006

The title compound, C17H16Br2O2S, crystallizes in a centrosymmetric space group and thus does not show any non-linear optical activity.
1-Naphthylammonium triiodoplumbate(II)
Authors: Lemmerer Andreas , Billing David G.
Published: April 2006

The title compound, (C10H10N)[PbI3], crystallizes as an organic–inorganic hybrid. As such, the structure contains extended chains of [PbI3]− units running along the b axis. Each Pb atom is octahedrally coordinated by six iodides, arranged as chains of face-sharing octahedra. These inorganic chains are separated by the isolated organic cations.
4-{[(2-Hydroxy-1-naphthyl)methylidene]amino}-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
Authors: You Zhong-Lu , Wang Jia , Chi Jing-Yun
Published: April 2006

The title compound, C22H19N3O2, is a Schiff base compound derived from 4-aminoantipyrine and 2-hydroxy-1-naphthaldehyde. As expected, the two crystallographically independent molecules adopt trans configurations about the central C=N bonds.
1-Chloro-3,4-dinitrobenzene–1,4-dioxane (1/1)
Authors: Barnett Sarah A. , Pradon Juliette , Lewis Thomas C. , Tocher Derek A.
Published: April 2006

The solvate structure of 1-chloro-3,4-dinitrobenzene with 1,4-dioxane, C6H3ClN2O4·C4H8N2, is reported. Alternating molecules of 3,4-dinitro-1-chlorobenzene and 1,4-dioxane are linked by C—H...O hydrogen bonds into a continuous two-dimensional sheet.
Competence of roots for race‐specific resistance and the induction of acquired resistance against Magnaporthe oryzae
Authors: JANSEN MARCUS , SLUSARENKO ALAN J. , SCHAFFRATH ULRICH
Published: April 2006

Generally, Magnaporthe oryzae, the causal agent of rice blast disease, is considered to be a typical leaf‐infecting plant pathogenic fungus. However, it was recently reported that M. oryzae shares many characteristics in common with root‐infecting pathogens and indeed was able to infect roots. Here, we report on studies testing for the capacity of roots of rice and barley to resist infections with M. oryzae. We established that roots of rice plants were colonized by M. oryzae in a manner which is different from the gene‐for‐gene specificity seen in leaves for the same genotypes. Furthermore, treatment of rice seedlings with benzo‐(1,2,3)‐thiadiazole‐7‐carbothioic acid S‐methyl ester (BTH), a chemical that protects leaves effectively against blast by conditioning acquired resistance, was not able to prevent colonization of roots by M. oryzae although a reduction in disease levels was observed. Moreover, BTH was not able to protect barley roots against infection with M. oryzae. Taken together, our results suggest that although roots show intrinsic variation in their ability to resist colonization by M. oryzae, neither gene‐for‐gene incompatibility nor aquired resistance are as effective at blocking the pathogen as they are in leaves.
Timing of autologous stem cell transplantation from last chemotherapy affects lymphocyte collection and survival in non‐Hodgkin lymphoma
Authors: Holtan Shernan G. , Porrata Luis F. , Inwards David J. , Ansell Stephen M. , Micallef Ivana N. , Johnston Patrick B. , Litzow Mark R. , Gastineau Dennis A. , Markovic Svetomir N.
Published: April 2006

Autograft absolute lymphocyte count (A‐ALC) is a prognostic factor for survival in non‐Hodgkin lymphoma (NHL) after autologous stem cell transplantation (ASCT). An A‐ALC is dependent upon the preaphaeresis absolute lymphocyte count (PA‐ALC) at the time of aphaeresis. It was hypothesised that the time interval from last chemotherapy (TILC) to aphaeresis affects PA‐ALC. One hundred and sixty consecutive NHL patients who underwent ASCT at the Mayo Clinic between 1996 and 2001 were evaluated. A strong correlation between TILC and PA‐ALC (r = 0·67, P < 0·0001) was identified. Higher PA‐ALC was observed in TILC ≥55 d compared with TILC <55 d [median: 7·0 vs. 3·8 × 109/l], P < 0·0001). TILC as a continuous variable was identified as a prognostic factor for overall survival (OS) [hazard ratio (HR) = 0·989, P < 0·01] and progression‐free survival (PFS) (HR = 0·992, P < 0·0492). Median OS and PFS were longer in the TILC ≥55 d vs. TILC <55 d group (not reached vs. 21 months, P < 0·0008; 76 vs. 9 months, P < 0·0025, respectively). Multivariate analysis demonstrated TILC to be an independent prognostic indicator for OS and PFS. These findings suggest that the immune status of the host at the time of aphaeresis may predict survival after ASCT.
Distribution of saltmarsh plant communities associated with environmental factors along a latitudinal gradient on the south‐west Atlantic coast
Authors: Isacch J. P. , Costa C. S. B. , Rodríguez‐Gallego L. , Conde D. , Escapa M. , Gagliardini D. A. , Iribarne O. O.
Published: April 2006

Aim  To produce an inventory of south‐west Atlantic saltmarshes (from latitude 31°48′ S to 43°20′ S) using remotely sensed images and field sampling; to quantify their total area; to describe the biogeographical variation of the main habitats characterized by dominant vascular plants, in relation to major environmental factors; to test the hypothesis of predominance of the reversal pattern in plant distribution (sedges and grasses dominate the lower, regularly inundated zones, while the upper zones are occupied by more halophytic species) previously described; and to compare these south‐west Atlantic saltmarshes with others world‐wide.

Location  South‐western Atlantic saltmarshes

Methods  Field samples of dominant emergent plant species positioned by the global positioning system (GPS) were obtained from most coastal saltmarshes (14) between southern Brazil and northern Patagonia, Argentina. Landsat satellite images were obtained and coastal saltmarsh habitats were quantified by supervised classification, utilizing points gathered in the field.

Results  Three main plant species dominated the low and middle intertidal saltmarsh, Spartina alterniflora Loesel., Spartina densiflora Brong. and Sarcocornia perennis (P. Mill.) A.J. Scott. The total area of the studied coastal saltmarshes was 2133 km2, comprising 380 km2 of Sp. alterniflora marsh, 366 km2 of Sp. densiflora marsh, 746 km2 of Sar. perennis marsh and 641 km2 of brackish marsh (dominated by Juncus acutus L., Juncus kraussii Hochst., Scirpus maritimus L., Scirpus americanus Pers. and Phragmites australis (Cav.) Trin.). Cluster analysis showed three habitat types: saltmarshes dominated by (1) Sp. densiflora and brackish species,(2) Sp. alterniflora and Sar. perennis and (3) Sp.densiflora only. The analysis of abiotic variables showed significant differences between groups of habitats and coordinated gradients of the abiotic variables. The south‐west Atlantic coast showed decreasing mean annual rainfall (1200 to 196 mm) and increasing mean tidal amplitude (< 0.5 to > 2.5 m) from latitude 31° to 43°.

Main conclusions  South‐west Atlantic saltmarshes are globally important by virtue of their total extent. Remote sensing showed that the reversal pattern in plant distribution is not widespread. Indeed, south‐west Atlantic saltmarshes are better characterized by the presence of the halophytic genera Spartina and Sarcocornia. Our results support the interpretation that south‐west Atlantic saltmarshes constitute a class of temperate type (sensuAdam, 1990) with transitional characteristics between Australasian–South African saltmarshes and west Atlantic saltmarshes.
The qualitative experience of Chinese parents with children diagnosed of cancer
Authors: Wong Maggie Y‐F , Chan Sally W‐C
Published: April 2006

Aim.  The present study aimed to describe the coping experiences of Chinese parents with children diagnosed as having cancer during the treatment stage.

Background.  Cancer is the second major cause of death among children in Hong Kong, it claims the lives of 60–70 children per year. Childhood cancer has tremendous impact on the family, especially the parents. It is, therefore, important to understand parents’ psychological functioning and coping experience.

Methods.  A phenomenological approach was used. Data were collected by qualitative interviews and analysed following Colaizzi's phenomenological methodology. A purposive sample of nine parents whose children were diagnosed of having childhood cancer was recruited from a regional hospital in Hong Kong.

Results.  Four themes emerged describing parents’ coping experiences: shock and denial, establishing the meaning or the situation, confronting the reality and establishing a new perspective. The initial reactions of the parents to the diagnosis were shock, denial and worry. However, they quickly accepted the reality and regarded their child's illness as their ‘fate’ that they had to accept. They were committed to the care of the sick child and seek informational and emotional support to cope with the situation. All of them were able to identify positive aspects from the illness experience and establish hope for the future. Chinese cultural beliefs might help the parents cope positively and avoid negative emotions.

Conclusion.  This study found some commonalities of coping experience in both Western and Chinese culture. It adds knowledge to the coping experience of Chinese parents at the treatment phase of their children's illness and highlighted the need for emotional and information support for parents.

Relevance to clinical practice.  Education programme and mutual support group would be helpful to parents. Nurses have to learn how different cultural groups and subcultural groups in the society cope to provide competent cultural care.
Adolescents with Type 1 Diabetes: transition between diabetes services
Authors: Visentin Kate , Koch Tina , Kralik Debbie
Published: April 2006

Aim.  The research aimed to develop a sustainable and coordinated approach to facilitating the transition between diabetes services for adolescents. The objectives were to: (1) involve key diabetes health delivery stakeholders in expressing their concerns and issues about current service delivery and ways to improve same, and (2) reveal from the perspective of the adolescents living with Type 1 Diabetes their experiences surrounding the process of transition.

Background.  This paper presents research that sought to identify the major concerns and issues that stakeholders had about transition and to reveal the experience of transition for the adolescent with Type 1 Diabetes. Key representatives from seven public diabetes services in Adelaide, South Australia worked collaboratively to answer the objectives of this inquiry.

Approach.  Interview data were generated and analysed using a response focus framework provided by fourth generation evaluation research. In this study, the focus was on common concerns, claims and issues raised by health care professionals (n = 21) and adolescents (n = 10) aged between 15 and 18 years about transferring from children's to adult diabetes services.

Findings.  Data revealed education and dietetic advice was reactive rather than proactive and that the paediatric model of care is philosophically and practically different to the adult model of diabetes care. Three phases of transition were identified: preparation, formal transition and evaluation. Our findings indicated that these stages of transition were not being fully implemented in health units.

Conclusion.  The project findings have set the scene to establish a multidisciplinary working party to work collaboratively across agencies to develop effective transition pathways.

Relevance to clinical practice.  The role of diabetes nurse educators and dietitians in South Australia is under‐used throughout the transition process. Diabetes nurse educators are in an ideal position to prepare, coordinate and evaluate transitional processes.
Mobile contingency locus controlling Escherichia coli K1 polysialic acid capsule acetylation
Authors: Vimr Eric R. , Steenbergen Susan M.
Published: April 2006

Escherichia coli K1 is part of a reservoir of adherent, invasive facultative pathogens responsible for a wide range of human and animal disease including sepsis, meningitis, urinary tract infection and inflammatory bowel syndrome. A prominent virulence factor in these diseases is the polysialic acid capsular polysaccharide (K1 antigen), which is encoded by the kps/neu accretion domain inserted near pheV at 67 map units. Some E. coli K1 strains undergo form (phase) variation involving loss or gain of O‐acetyl esters at carbon positions 7 or 9 of the individual sialic acid residues of the polysialic acid chains. Acetylation is catalysed by the receptor‐modifying acetyl coenzyme‐A‐dependent O‐acetyltransferase encoded by neuO, a phase variable locus mapping near the integrase gene of the K1‐specific prophage, CUS‐3, which is inserted in argW at 53.1 map units. As the first E. coli contingency locus shown to operate by a translational switch, further investigation of neuO should provide a better understanding of the invasive K1 pathotype. Minimal estimates of morbidity and economic costs associated with human infections caused by extraintestinal pathogenic E. coli strains such as K1 indicate at least 6.5 million cases with attendant medical costs exceeding $2.5 billion annually in the United States alone.