
TY  - JOUR
A1  - Colmanet, SF 
A1  - Mackay, MF 
T1  - Preparation and Structure of Bis-&#956;-(Benzene-1,2-Dithiolato)-bis[(benzene-1,2-dithiolato)-technetium( IV)]-Chloroform (1:1)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1988
VL  - 41
IS  - 2
SP  - 269
EP  - 277
KW  - 
UR  - https://doi.org/10.1071/CH9880269 
N2  - After reaction of benzene-1,2-dithiol (bdtH2) with ammonium [99Tc] pertechnetate in aqueous alcohol, extraction of the reaction mixture with chloroform yielded wine-red crystals of the title compound, C24H16S8Tc2.CHCl3. The crystal structure of the binuclear complex has been determined by X-ray diffraction. Crystals are triclinic and belong to the space group P&#299; with a 8.534(1), b 8.842(2), c 11.192(3)&#506;, &#945; 107.02(2), &#946; 98.13(1), &#947; 100.60(2)&#176; with Z 1. Refinement on 1524 data measured with Cu K&#945; radiation converged at R 0.082. The complex has exact Ci point symmetry and pseudo-C2 symmetry. Each technetium atom is coordinated to a trigonal -prismatic array of six sulfur ligand atoms. These arrays are fused through a quadrilateral face defined by the four bridging sulfur atoms of two benzene-1,2- dithiolato  ligands to give a Tc2S8 core of D2h pseudo-symmetry. As a Tc - Tc bond [bond length 2.591(3)&#506;] passes through the mid point of the quadrilateral face, this novel geometry can be described in terms of capped trigonal prisms. The chloroform is disordered. 
ER  -

