bluuebunny/crossref_metadata_2025_split huggingface dataset:
Inverse Triphenylmethylium-Farbstoffe / Inverse Triphenylmethylium Dyes
Authors: Hellwinkel Dieter , Gaa Heinrich Georg , Gottfried Reiner 
Published: March 2015

Keywords
When in the conventional triphenylmethylium dye systems of the crystal violet and malachit green type, 6 and 7, the N̈ -donor and C⊕ -acceptor centers are interchanged , the “Inverse Triphenylmethylium Dye Types” 4 and 5 are obtained , showing very similar colors. The stable models with R = phenyl (8-10) and R = p-tolyl (11-13) were investigated in more detail. The visual observations were supported by the VIS spectra which show ed nearly the same longest wavelength absorption maxim a for corresponding pairs of inverse and conventional dye representatives. The experimental results can be interpreted with a simple HMO -model according to which the longest wavelength absorptions correspond here to transitions of equal energy from weakly bonding to nonbonding and from nonbonding to weakly antibonding molecular orbitals, respectively. On the same basis numerous isoelectronic variants of that dye type can be envisaged. In the N M R -spectra of the new dyes, characteristically increasing deshieldings of nearly all positions are observed in going from the mono- (10+, 13+) through the di- (9++, 12++) to the trications (8+++, 11+++).
Darstellung und Struktur der tert-Butyliminovanadiuni(V)-Verbindungen tC4H9N =V (SR)3 (R = tC4H9, SiPh3) / Synthesis and Molecular Structure of tert-Butyliminovanadium(V) Compounds tC4H9N = V(SR)3 (R = tC4H9, SiPh3)
Authors: Preuss Fritz , Noichl Harald , Kaub Jürgen 
Published: March 2015

Abstract
Thiolato com pounds such as tC4H9N = V(SR)3 (R = tC4H9, SiPh3), iC3H7N = V(StC4H9)3 and tC4H9N = V(OtC4H9)„(StC4H9)3-n (n = 1,2) have been prepared by reaction of im inovanadium (V) chlorides with LiSR. The properties of tC4H9N = V(StC4H9)3 are studied by redistribution and hydrolysis reactions. 1H. 13C, 51V NMR spectra are discussed; the constants of 51V, 14N coupling have been determined. X-R ay diffraction analyses confirm a distorted tetrahedral arrangement of the ligands in the vanadium (V) complexes 5 and 9
Ubergangsmetall-substituierte Acylphosphane und Phosphaalkene, X [1] Phosphaalkenyl-, Mono- und Diacylphosphidokomplexe des Rutheniums Röntgenstrukturanalyse von (η5-C5Me5)(CO)2RuP[C(O)t-Bu]2 / Transition Metal Substituted Acylphosphines and Phosphaalkenes, X [1] Phosphaalkenyl-, Mono- and Diacylphosphido Complexes of Ruthenium X-Ray Analysis of (η5-C5Me5)(CO)2RuP[C(O)t-Bu]2
Authors: Weber Lothar , Bungardt Dagmar , Reizig Klaus , Boese Roland 
Published: March 2015

Abstract
Treatment of (η5-C5Me5)(CO))2 RuP(SiMe3)2 (3) with mesitoyl chloride (MesC(O)Cl) leads to the phosphaalkenyl complex (Z )-(η5-C5Me5)(CO)2Ru-P = C (OSiMe3)(Mes) (4a), whereas with PhC(O)Cl a mixture of the phosphaalkenyl complex 4b and the dibenzoylphosphido complex (η5-C5Me5) (CO)2RuP[C(O)Ph]2 (5b) is obtained. The reaction of 3 with pivaloyl chloride only affords the diacylphosphido complex 5c. The mechanism of these transformations is discussed. The products are characterized by elemental analysis as well as spectroscopic means (IR , 1H-, 13C-, 31P-NMR, MS). For com pound 5c the spectroscopic findings are confirmed by an X-ray structure analysis
(± )-3 ,4 -Dihydro-5-methyl-4-n-alkyl-und -alkenyl-2H-pyrrole aus Pseudomonas putida [1] / (± )-3,4-Dihydro-5-methyl-4-n-alkyl and -alkenyl-2H-pyrroles from Pseudomonas putida [1]
Authors: Hildebrand U. , Budzikiewicz H. 
Published: March 2015

Abstract
From the culture medium of Pseudomonas putida several derivatives of 3,4-dihydro-5-methyl- 2H-pyrrole were isolated differing in the C-4 substituent (unbranched C11, C13 and C15 alkyl and alkenyl groups), the structures of which could be elucidated
Transition Metal Squarates, II On the Structure of Cubic (MC4O4·2H2O)3CH3COOH·H2O(M=Zn2+,Ni2+)[1]
Authors: Weiss Armin , Riegler Eugen , Robl Christian 
Published: March 2015

Abstract
The isotypic compounds (MC4O4·2 H2O)3·CH3COOH·H2O(M=Zn2+,Ni2+) crystallize in the cubic space group Pn3n. The 3-dimensional framework structure contains cavities, which may be filled with CH3COOH · H2O . The metal ions are coordinated almost octahedrally by two water molecules and four oxygen atoms of four C4O4
2- dianions. Thus the squarate dianions act as fourfold monodentate ligands. Strong hydrogen bonding between H2O and C4O4
2- has to be assumed.
Übergangsmetallquadratate, III Über die trikline Käfigstruktur des (MC4O4·2 H2O)3·CH3COOH·H2O(M = Zn2+, Mn2+)/Transition Metal Squarates, III On the Triclinic Cage Structure of (MC4O4·2 H2O)3-CH3COOH·H2O(M = Zn2+, Mn2+)
Authors: Weiss Armin , Riegler Eugen , Robl Christian 
Published: March 2015

Abstract
The isostructural compounds (MC4O4·2 H2O)3·CH3COOH·H2O (M=Zn2+,Mn2+) crystallize in the triclinic space group P1̄, if grown in solution of high ionic strength. The structural features are similar to those in the cubic phase. Correspondingly CH3COOH·H2O can be trapped in cage­ like cavities, formed by the 3-dimensional framework o f M2+ and C4O4
2- . The metal ions are coordinated in a distorted octahedral fashion. The squarate dianions act as four-fold monodentate ligands.
Komplexe mit substituierten 2,5-Dihydroxy-p-benzochinonen: ZnC6(NO2)2O4·2 H2O/Complexes with Substituted 2,5-Dihydroxy-p-benzochinones: ZnC6(NO2)2O4·2 H2O
Authors: Robl Christian , Weiss Armin 
Published: March 2015

Abstract
ZnC6(NO2)2O4 · 2 H2O was grown in aqueous silicagel. It crystallizes monoclinically (space group I2/c). Zn2+ has CN 6 . It is surrounded in a distorted octahedral fashion by 2 water molecules in cis -position and 4 oxygen atoms of the bis-chelating [C6(NO2)2O4]2- ions. Thereby infinite corrugated chains are formed consisting of Zn2+ and the nitranilate dianions. These chains are interlinked by hydrogen bonds between H2O and the NO2 groups. The NO2 groups are twisted against the ring plane. The bond lengths in the dianion are typical of completely delocalized π-electrons.
Borylierte Carbodiimide
Authors: Einholz Wolfgang , Haubold Wolfgang 
Published: March 2015

Abstract
The borylated carbodiimides 3 a, 3b and 4 can be synthesized by reaction of the 2-chloro-1,3,2-diazaborolidines 2a, 2b with Me3Si -N = C = N -SiMe3 (1) or Me3Si -N = C = N -tBu respectively. In the reaction of the non cyclic haloboranes R2BHal (R = Ph, Me, Me2N) 2c -e with 1 R3B is formed and for R = Me, Me2N polymeric (RBNCN)n is obtained, whilst the spectroscopically identified intermediate products only in the case of R = Ph can be isolated. The chloroborolane 2f leads to the polymeric diborylated carbodiimide 3f, probably due to intermolecular B -N-coordination. H2N -CN forms with 9-BBN the monoborylated cyanamide 8 .
Sr3In2P4 und Ca3ln2As4, Zintlphasen mit Bänderanionen aus kanten-und eckenverknüpften InP4- bzw. InAs4-Tetraedern/ Sr3In2P4 and Ca3In2As4, Zintl Phases with Strings of InP4 and InAs4 Tetrahedra, Resp., Sharing Edges and Corners
Authors: Cordier Gerhard , Schäfer Herbert , Stelter Michael 
Published: March 2015

Abstract
The new compounds Sr3In2P4 and Ca3In2As4 crystallize in the orthorhombic system , space group Pnnm (No. 58), with the following lattice constants:
Sr3In2P4: a = 1632.3(6), b = 682.8(3), c = 428.9(2);
Ca3In2As4: a = 1621.2(6), b = 659.5(3), c = 430.6(2).
In the anionic partial lattice InP4 (InAs4) tetrahedra are connected by common edges and corners and form (InP2
3-)n ((In As2
3-)n) strings of alternating four-membered and eight-membered rings.
Kristallstruktur von β-VCl2(N3S2). Synthese und Kristallstruktur von [VCl(N3S2)(Pyridin)2]2·2 CH2Cl2, einem Cyclothiazenokomplex mit Vanadium(IV)/Crystal Structure of β-VCl2(N3S2). Synthesis and Crystal Structure of [VCl(N3S2)(pyridine)2]2·2 CH2Cl2, a Cyclothiazeno Complex with Vanadium (IV)
Authors: Christophersen Ruth , Willing Wolfgang , Müller Ulrich , Dehnicke Kurt 
Published: March 2015

Abstract
β-VCl2(N3S2) was obtained by sublimation. It represents a new modification compared to the known α-VCl2(N3S2) which can be obtained from solution. Its crystal structure was determined by X-ray diffraction (864 observed reflexions, R = 0.034). Crystal data: triclinic, space group P1̄, Z = 2, a = 570.0, b = 779.9, c = 735.3 pm , α = 90.85°, β = 108.26°, y = 98.77°. Both modifications consist of polymer chains in which the vanadium atoms are linked alternatively by chloro and nitrogen bridges. The packing of the chains is rather similar, the only difference being that in β-VCl2(N3S2) the chains are rotated by 11° as compared to the orientation in α-VCl2(N3S2). The difference of the two modifications also shows up in the slightly different IR spectra.
By reduction of VCl2(N3S2), dissolved in CH2Cl2/pyridine, with H2S, zinc or PPh3, the cyclothiazeno complex [VCl(N3S2)(pyridine)2]2·2 CH2Cl2 was obtained. It crystallizes in the monoclinic space group P 21/c, Z = 4, a = 1010.4, b = 917.3, c = 1967.8 pm, β = 103.03° (structure determination with 649 observed reflexions. R = 0.081). In this vanadium(IV) compound the metal atoms are part of planar VN3S2 rings as found in the VCl2(N3S2) modifications. The two vanadium atoms of the centrosymmetrical dimer are linked via one nitrogen atom of each of the VN3S2 rings; the resulting V2N2 ring is coplanar with the two VN3S2 rings.
Synthese und Kristallstruktur von W2[OC(CF3)2NMe2]2(NMe2)4 / Synthesis and Crystal Structure of W2[OC(CF3)2NMe2]2(NMe2)4
Authors: Roesky Herbert W. , Bertel Norbert , Edelmann Frank , Herbst Regine , Egert Ernst , Sheldrick George M. 
Published: March 2015

Abstract
The reaction of W2(NMe2)6 with hexafluoroacetone (HFA) yields W2[OC(CF3)2NMe2]2(NMe2)4, an orange solid, which was characterized by mass spectra, 1H, 13C, 19F NMR spectra and an X-ray structure analysis. The compound contains a W=W triple bond of 230.1(1) pm.
Darstellung und Kristallstrukturen von [(η5-C5H5)2Ti(P(CH3)2Si(CH3)3)Cl) und [Ti(η5-C5H5)2(μ2-P(CH3)2)]2 / Synthesis and Crystal Structure of [(η5-C5H5)2Ti(P(CH3)2Si(CH3)3)Cl) and [Ti(η5-C5H5)2(μ2-P(CH3)2)]2
Authors: Payne Robert , Hachgenei Johannes , Fritz Gerhard , Fenske Dieter 
Published: March 2015

Abstract
(η5-C5H5)2TiCl2 reacts with P(CH3)2(Si(CH3)3) to form the paramagnetic complex [(η5-C5H5)2Ti(Cl)P(CH3)2Si(CH3)3] (1). In 1 Ti is coordinated by two (η5-C5H5), and a Cl-ligand. In addition Ti is bound to the P-atom of a P(CH3)2(Si(CH3)3) ligand. Treatment of 1 with Na/Hg affords the dinuclear paramagnetic complex [Ti(η5-C5H5)2(μ2-P(CH3)2)]2 (2). 2 contains two Ti(η5-C5H5)2 units. Each Ti is bound to the P-atoms of the μ2-P(CH3)2-ligands. The Ti-Ti- contact (391.8 pm) does not correspond to metal-metal bonding.
Synthese von 4,4,5,5-Tetramethyl-3-oxid- 2-ferrocenyk-imidazolin-1-oxyl / Synthesis of 4 ,4 ,5 ,5-Tetramethyl-3-oxide- 2-ferrocenyl-imidazoline-1-oxyl
Authors: Owtscharenko Wiktor I. , Huber Wolfgang , Schwarzhans Karl E. 
Published: March 2015

Abstract
A nitronylnitroxide derivative of ferrocene has been prepared by interaction of ferrocene aldehyde with 2,3-bis(hydroxylamino)-2,3-dimethylbutane followed by oxidation with lead(IV ) oxide.
Phasenbeziehungen im System Nain—Sn und die Kristallstrukturen der intermediären Verbindungen NaInSn2 und NaInSn4 / Phase Relations in the System Naln—Sn and the Crystal Structures of the Intermediate Compounds NaInSn2 and NaInSn4
Authors: Blase Wolfgang , Cordier Gerhard , Kniep Rüdiger , Schmidt Roswitha 
Published: March 2015

The quasibinary system Naln-Sn contains the intermediate phases NayInySn, Na9In9Sn2, NalnSn, Na2In2Sn3, NaInSn2 and NaInSn4. With the exception of Na2In2Sn3 (stable only between 134°C and 365°C), crystals of the ternary compounds were grown from the melt and were investigated by single crystal X-ray methods (Na9In9Sn: a = 2287.7(8) pm, F43m; Na9In9Sn2: a = 1662.4(7), c = 983.9(5) pm, P6/mmm; NaInSn: a = 486.1(2), c = 775.7(4) pm, P63/mmc; NaInSn2: a = 627.9(3), b = 654.3(3), c = 1139.6(5) pm, P212121; NaInSn4: a = 654.6(4), c = 531.6(6) pm, I4/mcm). The crystal structure of NaInSn is a representative of the Zintl-phases. with the [InSn]⁻-partial structure in a wurtzite-type arrangement. The crystal structures of NaInSn4 and NaInSn2 have been determined (R = 0.038 and 0.062, respectively). The crystal structure of NaInSn2 contains In and Sn atoms in a helical arrangement (six atoms per turn) along the α-axis direction. Interatomic bonds between neighbouring helices complete a distorted [2+2]-tetrahedral environment for every In/Sn position. The compound can be classified in terms of the Zintl concept.
NaInSn4 is an isotype of the intermetallic phase Al2Cu. By this, the chemical and structural series NaInSn → NalnSn2 → NaInSn4 represents a change from Zintl-phases to an intermetallic phase.
Synthese und Kristallstruktur von 2-Trimethylsilyl-1,3-bistrimethylsilylimino-1,3-dihydro-isoindol sowie die Kristallstruktur von Hexakis(trimethylsilyl)-1,4-benzdiamidin / Synthesis and Crystal Structure of 2-Trimethylsilyl-1,3-bis-trimethylsilylimino-1,3-dihydro-isoindole and the Crystal Structure of Hexakis(trimethylsilyl)-1,4-benzdiamidine
Authors: Weller Frank , Schmock Fritjof , Dehnicke Kurt 
Published: March 2015

2-Trimethylsilyl-1,3-bis-trimethylsilylimino-1,3-dihydro-isoindole, C8H4N3(SiMe3)3 (2), has been prepared by the reaction of 1,2-benzodinitrile with LiN(SiMe3)2, followed by treatment with ClSiMe3. 2 forms yellow crystals, which were characterized by a crystal structure determination, as was the known hexakis(trimethylsilyl)-1,4-benzdiamidine, {[(SiMe3)2N](SiMe3N)C-C6H4-C(NSiMe3)[N(SiMe3)2]}) (1).
1: space group P1, Z = 1̄,2520 observed independent reflexions, R = 0.052. Lattice dimensions (19°C): a = 662.7(1); b = 1088.3(1); c = 1417.4(2) pm; α = 76.60(1)°; β = 87.33(1)°; γ = 73.90(1)°. 1 forms monomeric centrosymmetric molecules with the amidino groups in 1,4-position of the C6H4 ring. The CN distances are 127.1(3) and 141.3(3) pm, respectively, corresponding to C=N̅-SiMe3 and C-N̅(SiMe3)2 moieties.
2: space group P212121, Z = 4, 1960 observed independent reflexions, R = 0.058. Lattice dimensions (20°C): a = 643.0(1); b = 1477.4(1); c = 2414.4(2) pm. 2 forms monomeric molecules with a planar isoindole skeleton with different Si-N-bond lengths of the SiMe3 groups in 2-position (180.2(5) pm) and in 1,3-positions (171.4(5); 170.9(9) pm).
Komplexbildung in TlCl3- und Chlorothallat(III)-Schmelzen / Complexation in TlCl3 and Chlorothallate(III) Melt Systems
Authors: Brockner Wolfgang , Alexiou Vassilios , Somer Mehmet 
Published: March 2015

TlCl3 and TlCl3-TlCl mixtures have been prepared and investigated by Raman spectroscopy in the solid and molten state. Already at 50°C TlCl3 starts to decompose according to TlCl3 → TlCl + Cl2. TlCl generated reacts with TlCl3 to give TlCl4
-, Tl2Cl7~ and possibly Tln
IIICl3n+1
- units with n ≧ 2, respectively. Molten TlCl3, can be described best by the equilibrium TlCl4
- + TlCl3 ⇄ Tl2Cl7
-.
In solid TlCl3-TlCl mixtures the following species could be identified Tl3(TlIIICl6), Tl3
1(Tl2
IIICl9) and TlCl4). TlCl4
- and TlCl5
2- complex units dominate in the molten state. In the melt, species are in dynamic coupled equilibria depending on temperature and stoichiometry.
Strukturchemie ungesättigter Siliciumverbindungen: Kristall- und Molekülstrukturen des stabilen Silanimins ′Bu2Si=N—Si′Bu3 und von Silanimin-Donoraddukten (Donor = Tetrahydrofuran, Benzophenon) / Structural Chemistry of Unsaturated Silicon Compounds: Crystal and Molecular Structures of the Stable Silaneimine ′Bu2Si=N—Si′Bu3 and of Silaneimine Donor Adducts (Donor = Tetrahydrofuran, Benzophenone)
Authors: Reber Gabriele , Riede Jürgen , Wiberg Nils , Schurz Klaus , Müller Gerhard 
Published: March 2015

The structure of the first stable silaneimine ′Bu2Si=N—Si′Bu3 (1) (i.e. a compound containing a silicon nitrogen double bond) has been determined by X-ray crystallography (monoclinic, space group P21/n, a = 8.962(1), b = 18.361(1), c = 14.658(1) Å, β = 90.98(1)°, V = 2411.6 Å3.Z = 4, wR = 0.043, w = 1/σ2(Fo) for 208 refined parameters and 2610 observed structure factors. It is monomeric in the solid state and has a nearly linear Si=N—Si skeleton (Si—N—Si 177.8(2)°) with drastically different Si=N and Si—N bond lengths (1.568(3) and 1.695(3) A, respectively). The benzophenone adduct of ′Bu2Si=N—Si′Bu3 and the tetrahydrofuran (THF) adduct of the closely related silaneimine Me2Si=N—Si′Bu3 contain the donor molecules being coordinated exclusively to the unsaturated silicon atoms, which adopt a distorted tetrahedral coordination geometry upon coordination with characteristically elongated Si=N double bonds. The solid state structure of the benzophenone adduct strongly suggests that [2+2] cycloadditions of Si=N double bonds with aldehydes or ketones proceed in a non-concerted manner via prior formation of donor-Si bonds.
((THF) • Me2Si=N—Si′Bu3 (2): P21/n, a = 18.480(4), b = 14.209(2), c = 18.683(5) Å, β = 115.11(2)°, V = 4442.2 Å3, Z = 8, wR = 0.094 for 397 parameters and 3432 observables; (Ph2C=O) · ′Bu2Si=N—Si′Bu3 (3): P21,/n, a = 13.247(2), b = 15.689(2), c = 17.073(2) Å. β = 110.53(1)°, V = 3323.0 Å3, Z = 4, wR = 0.039 for 379 refined parameters and 3789 observables.)
One Pot Synthesis of Methyl 3-Methyl-4H-1,4-benzothiazine 2-carboxylates
Authors: Gupta R. R. , Jain S. K. , Gupta Vandana , Rathore R. K. 
Published: March 2015

Methyl 3-Methyl-4H-1,4-benzothiazines 2-Carboxylate
A one pot synthesis of methyl 3-methyl-4H-1,4-benzothiazine 2-carboxylates is reported by the condensation and oxidative cyclization of substituted 2-aminobenzenethiols with methyl acetoacetate in DMSO.
Spektroskopische Untersuchung des [FCl2V(15N3S2)]--Ions; Kristallstruktur von [Na-Benzo-15-Krone-5][FCl2V(N3S2)] / Spectroscopic Investigation of the Ion [FCl2V(15N3S2)]-; Crystal Structure of [Na-Benzo-15-Crown-5][FCl2V(N3S2)]
Authors: Rehder Dieter , Fenske Dieter , Baum Gerhard , Borgholte Harald , Dehnicke Kurt 
Published: March 2015

[Na-15-crown-5][FX2V(N3S2)] (X = Cl, Br) and [Na-benzo-15-crown-5][FCl2V(N3S2)] have been prepared by reactions of X2V(N3S2) with sodium fluoride in acetonitrile suspensions in the presence of 15-crown-5 and benzo-15-crown-5, respectively. The 15N-labeled complex [Na-15-crown-5]-[FCl2V(15N3S2)] was also prepared and characterized by 15N, 19F, and 51V NMR spectra, as well as by IR spectroscopy.
Whereas the crystal structure of [Na-15-crown-5][FCl2V(N3S2)], owing to disorder of the crown ether molecule, could be refined only to an R-value of 0.16 (space group C2/m, Z = 4, a = 1995.4(11); b = 1016.2(6); c = 1047.2(8) pm; β = 100.83(4)° at —65 °C), the crystal structure of the corresponding [Na-benzo-15-crown-5][FCl2V(N3S2)] was determined without complications. Space group P2,/c, Z = 4, 5565 observed independent reflexions, R = 0.036. Lattice dimensions at 20 °C: a = 1198.9(6); b = 970.3(5); c = 1918.2(10) pm; β = 93.74(3)°. The compound forms ion pairs, in which the sodium atom is seven-coordinated by the oxygen atoms of the crown ether molecule, the fluorine atom and one chlorine atom of the trigonal-bipyramidal [FCl2V(N3S2)]- unit. The vanadium atom is part of a planar VN3S2 ring; fluorine and two nitrogen atoms of the cyclothiazeno ring occupy the equatorial positions.
Die Ligandeneigenschaften der Komplexe LMO3 (M = Mo(VI), W(VI), L = cyclisches Triamin). Die Kristallstrukturen von [(LMoO3)4Co][BPh4]2 · C2H5OH, (LMoO3)4Fe][BPh4]3 · NaBPh4, [LWO3BPh3] und [(LWO3)2BPh2][BPh4] / The Ligating Properties of LMO3-Complexes (M = Mo(VI), W(VI), L = Cyclic Triamine). The Crystal Structures of [(LMoO3)4Co][BPh4]2 · C2H5OH, [(LMoO3)4Fe][BPh4]3 · NaBPh4, [LWO3BPh3] and [(LWO3)2BPh2][BPh4]
Authors: Schreiber Peter , Wieghardt Karl , Nuber Bernhard , Weiss Johannes 
Published: March 2015

The reactivity of LMO3 and L′MO3 complexes as ligands has been investigated (L = C6H15N3, 1,4,7-triazacyclononane; L′ = C9H21N3, N,N′,N″-trimethyl-1,4,7-triazacyclononane; M = MoVI, WVI).
The crystal structures of [(L′MoO3)4CoII][BPh4]2· C2H5OH (1) and [(L′MoO3)4FeIII][BPh4]3· Na[BPh4] (2) have been determined by X-ray crystallography. Both the CoII and FeIII centers are in a tetrahedral environment of four oxygen atoms which are connected to L′MO2 fragments. The reaction of LMO3 complexes (M = MoVI, WVI) in aqueous solution with tetraphenylborate(1–) anions yields LMO3BPh3 or [(LMO3)2BPh2][BPh4] complexes and benzene. The crystal structures of LWO3BPh3 (3) and [(LWO3)2BPh2][BPh4] (4) have been determined.
A Study on the Mannich Reaction with 1,3-Indandione
Authors: Afsah E. M. , Hammouda M. , Khalifa M. M. 
Published: March 2015

Attempted Mannich reaction with the title compound 1 using morpholine and formalin led to 2 or 4 according to the reaction conditions. Whereas, on using primary amines the diindeno [1,2-b:2′,1′-e]pyridine (9-11) were obtained, in addition to 2-methylene-1,3-indandione (6), in case of 10 and 11.
However, the Mannich bases 13-15 were formed on treating 2-benzylidene-1,3-indandione with the appropriate secondary amine. The structures 2, 9-11 were confirmed via unambiguous syntheses.
Notizen: Kristallstruktur von [As(C6H5)4]2[Re3Cl11(H20)] · H2O / Crystal Structure of [As(C6H5)4]2[Re3Cl11(H2O)] · H2O
Authors: Jung Bernd , Meyer Gerd 
Published: March 2015

The crystal structure of
(AsPh4)2[Re3Cl„(H2O)]·H2O, previously thought to be (AsPh4)2[Re3Cl11], was redetermined from single-crystal four-circle diffractometer data. The crystal system is triclinic, PĪ, a = 983.1(6), b = 1200.5(6), c = 2566.2(10) pm, α = 92.67(4), β = 99.95(4), γ = 113.38(2)°, Vm = 817.95(1) cm3/mol, R = 0.043,Rw= 0.033.
Acetylenkomplexe von Rhenium(+ VI). Die Kristallstrukturen von [ReCl4(n-C3H7 – C= C – n-C3H7)(POCl3)] und ReCl4(THF)2 / Alkyne Complexes of Rhenium(+VI). The Crystal Structures of [ReCl4(n-C3H7 – C= C – n-C3H7)(POCl3)] and ReCl4(THF)2
Authors: Swidersky Hans-Walter , Pebler Jürgen , Dehnicke Kurt , Fenske Dieter 
Published: March 2015

The results of the magnetic susceptibility measurements of the previously reported rhenium alkyne complexes [ReCl4(PhC≡CPh)]2.2 CH2Cl2 and [ReCl4(PhC=CPh)(CH3CN)] in the temperature range of 4.2-293 K suggest d1-configurations, corresponding with oxidation state +VI for the rhenium atoms. The new alkyne complex [ReCl4(n-C3H7–C=C–n-C3H7)(POCl3)] has been prepared by the reaction of ReCl5·OPCl3 with n-C3H7-C≡C–n-C3H7 in CCl4 solution, forming dark red single crystals, which were characterized by IR spectroscopy as well as by a crystal structure determination with X-ray methods (space group P2,/c, Z = 4, 3235 observed unique reflexions, R = 0.026; lattice dimensions at –70 °C: a = 805.6(2), b = 1000.6(4), c = 2188.8(6) pm, β = 79.59(2)°). [ReCl4(n-C3H7-C=C–n-C3H7)(POCl3)] has a molecular structure with the alkyne ligand bonded side-on (bond lengths Re-C 198.4 and 198.2(5) pm). The oxygen atom of the solvating POCl3 molecule is coordinated in trans position to the ReC2 unit of the alkyne ligand (bond length Re—O = 223.7(3) pm).
In THF solutions the alkyne complexes of this type undergo a slow reaction forming ReCl4(THF)2, which was also characterized by IR spectroscopy and a crystal structure determination (space group P212121, Z = 4, 2243 observed unique reflexions, R = 0.053; lattice dimensions at –70 °C: a = 773.0(14), b = 1267.1(6), c = 1398.6(7) pm). In ReCl4(THF)2 the THF molecules coordinate in cis-position (bond lengths Re–O 208 and 212(1) pm).