92305-44-7Relevant academic research and scientific papers
Synthesis of the germanium(I) compounds [Ge2Hal4]2- and their reductive condensation to octahedral [Ge6]2- clusters in an organometallic environment
Renner, Gerd,Kircher, Peter,Huttner, Gottfried,Rutsch, Peter,Heinze, Katja
, p. 879 - 887 (2000)
GeI2 reacts with [M2(CO)10]2- (M = Cr, W) leading to reductive coupling of two GeI2 units to produce the [Ge2I4]2- ligands of [{(OC)5M}I2Ge-GeI2{M(CO)5}]2- (1a and 2a). The [Ph4P] salts of these anions have been characterised by X-ray structure analyses as have the [Ph4P] salts of [{(OC)5M}Cl2Ge-GeCl2{M(CO)5}]2- (lb and 2b) obtained from the iodo derivatives la and 2a by halide metathesis with [Ph4P]Cl. Treatment of GeI2 with [W2(CO)10]2- in the presence of 2,2'- bipyridine leads to [{(OC)5W}I2GeGe(bipy){W(CO)5}] (3). The digermanium ligands in 1-3 contain germanium in the unconventional formal oxidation state +I. Reductive condensation of [{(OC)5Cr}I2GeGeI2{Cr(CO)5}]2- (1a) by addition of [Cr2(CO)10]2- leads to the octahedral cluster [{(OC)5Cr}6Ge6]2- (4) in a yield of 40%. The sequence of reactions as reported describes the first systematic approach to the synthesis of [E6]2- clusters.
