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  • 1
    ISSN: 0044-2313
    Keywords: Thionitrosyl Compounds ; Rhenium Complexes ; X-Ray diffraction ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mixed-ligand Complexes of Rhenium. VI. Synthesis and X-Ray Structures of the Rhenium Thionitrosyl Complexes mer-[Re(NS)Cl2(Me2PhP)3] · CH2Cl2 and trans-[Re(NS)Cl3(Me2PhP)2]mer-Dichlorotris(dimethylphenylphosphine)(thionitrosyl)rhenium(I), mer-[Re(NS)Cl2(Me2PhP)3], and trans-Trichlorobis(dimethylphenylphosphine)(thionitrosyl)rhenium(II), trans-[Re(NS)Cl3(Me2PhP)2], are formed during the reaction of rhenium(V) mixed-ligand complexes of the general formula [ReN(Cl)(Me2PhP)2(R2tcb)] with disulphur dichloride (HR2tcb = N-(N,N-dialkylthiocarbamoyl)benzamidine). The chelating ligands are substituted during the reaction.mer-[Re(NS)Cl2(Me2PhP)3] crystallizes monoclinic in the space group P21/n. The dimensions of the unit cell are a = 8.854(2); b = 31.295(3); c = 11.981(3) Å; β = 108.14(1)°; Z = 4. A final R value of 0.033 was achieved on the basis of 5 387 reflections with I ≥ 3σ(I). The rhenium atom is coordinated in a distorted octahedral environment. The Me2PhP ligands are arranged meridionally cis to the linear thionitrosyl group.trans-[Re(NS)Cl3(Me2PhP)2] crystallizes in the monoclinic space group C2/c with an unit cell of the dimensions a = 33.320(9); b = 8.446(1); c = 17.28(5) Å; β = 116.09(1)°, Z = 8. The R value converged at 0.026 on the basis of 5 460 independent reflections. The metal is octahedrally coordinated with the phosphine ligands in trans position to each other. The angle Re—N—S is 175.7(3)°.
    Notes: Die Rhenium—Thionitrosylkomplexe mer-Dichlorotris(dimethylphenylphosphan)(thionitrosyl)rhenium(I), mer-[Re(NS)Cl2(Me2PhP)3], und trans-Trichlorobis(dimethylphenylphosphan)(thionitrosyl)rhenium(II), trans-[Re(NS)Cl3(Me2PhP)2], entstehen bei der Umsetzung von Rhenium(V)-Gemischtligandkomplexen des Typs [ReN(Cl)(Me2PhP)2(R2tcb)] mit Dischwefeldichlorid (HR2tcb = N-(N,N-dialkylthiocarbamoyl)benzamidin). Die Chelatliganden werden im Verlauf der Reaktion abgespalten.mer-[Re(NS)Cl2(Me2PhP)3] kristallisiert monoklin in der Raumgruppe P21/n. Die Abmessungen der Elementarzelle sind a = 8,854(2); b = 31,295(3); c = 11,981(3) Å; β = 108,14(1)°; Z = 4. Auf der Grundlage von 5 387 unabhängigen Reflexen mit I ≥ 3σ(I) konnte ein R-Wert von 0,033 erreicht werden. Das Rhenium-Atom befindet sich in einer verzerrt oktaedrischen Koordinationsumgebung mit meridional angeordneten Me2PhP-Liganden. Die lineare Thionitrosylgruppierung befindet sich dazu in cis-Stellung.trans-[Re(NS)Cl3(Me2PhP)2] kristallisiert in der monoklinen Raumgruppe C2/c mit einer Elementarzelle der Abmessungen a = 33,320(9); b = 8,446(1); c = 17,281(5) Å; β = 116,09(1)°, Z = 8. Der R-Wert konvergierte gegen 0,026 unter Verwendung von 5 460 unabhängigen Reflexen. Das Metall-Atom ist oktaedrisch koordiniert, wobei sich die beiden Phosphan-Liganden zueinander in trans-Position befinden. Der Winkel Re—N—S beträgt 175,7(3)°.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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