
TY  - JOUR
A1  - Tiekink, ERT 
A1  - Yan, XF 
A1  - Young, CG 
T1  - Structural Aspects of V<sub>2</sub>( µ;-S<sub>2</sub>)<sub>2</sub>(S<sub>2</sub>CNR<sub>2</sub>)<sub>4</sub> Complexes: the X-Ray Crystal Structure of V<sub>2</sub>( µ;-S<sub>2</sub>)<sub>2</sub>(S<sub>2</sub>CNEt<sub>2</sub>)<sub>4</sub>.2CHBr<sub>3</sub>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1992
VL  - 45
IS  - 5
SP  - 897
EP  - 903
KW  - 
UR  - https://doi.org/10.1071/CH9920897 
N2  - Brown V2(p-S2)2(S2CNEt2)4 is produced upon reaction of [vs4]3- with (Et2NCS2)2, in a synthesis similar to that described for V2( µ-S2)2(S2CNBui2)4 ( Halbert , T. R., Hutchings, L. L., Rhodes, R., and Stiefel , E. I., J. Am. Chem. Soc., 1986, 108, 6437). Crystals of V2( µ;-S2)2(S2CNEt2)4.2CHBr3 are orthorhombic and belong to space group Pbca , with a 10.909(2), b 20.492(2), c 20.471(2) Å , V 4576.2 Å3, and Z 4 dimers . The structure was solved by Patterson and Fourier methods and refined by using 1189 reflections to final R 0.061 ( Rw 0.059). The vanadium(IV) atoms in the dimeric complex are bridged by two µ-k2S,S&#8242;:  k2S,S&#8242;-S22- ligands [S(1)-S(2) 2.00(1) Å] and a metal-metal single bond [V-V 2.900(6) Å]. Each vanadium atom is further coordinated by two bidentate dithiocarbamate  ligands whose arrangement defines a meso isomer with &#923; and &#916; configurations at the vanadium centres. This &#923; &#916; diastereomer differs from the &#923; &#923; -&#916;&#916; racemate structurally characterized in the case of V2(µ-S2)2(S2CNBui2)4 but is the same as that found for the molybdenum(v) dication in [Mo2( µS2)2(S2CNEt2)4] (BF4)2.2CHBr3 ( Kocaba, T., Young, C. G., and Tiekink , E. R. T., Inorg. Chim. Acta, 1990, 174, 143). 
ER  -

