Abstract
AbstractBy following a simple one‐pot procedure that starts with FeBr2 and triphos [MeC(CH2PPh2)3] or the dimer [Ru2(μ‐Cl)3(triphos)2]Cl in reaction with the nucleophile [Bu3MeN]2[GeB11H11] in acetonitrile, the zwitterionic acetonitrile adducts [M(GeB11H11)(triphos)(MeCN)2] [M = Fe (1), M = Ru (2)] were isolated in good yield. By means of a facile η1(Ge) to η3(B–H) rearrangement, 1 and 2 can be converted into [M(GeB11H11)(triphos)] [M = Fe (3), M = Ru (4)]. The nucleophilicity of the germanium cluster vertex in the iron derivative 3 is high enough to react with [Mo(CO)5(thf)] to give the bimetallic complex [(triphos)Fe(GeB11H11)(MoCO)5] (5), which contains an ambident coordinating germaborate moiety. The new compounds have been characterized by single‐crystal X‐ray diffraction and elemental analysis. Soluble complexes were also investigated by 1H, 11B, and 31P NMR spectroscopy in solution. In the case of the insoluble complex 1, solid‐state 31P NMR spectroscopy was carried out.
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