Behavior of dodecahydro-closo-dodecaborate anion B12H 12 2- in reaction with Au(Ph3P)Cl

Article abstract of DOI:10.1134/S003602361104005X

The reaction of the anion B₁₂H ₁₂ ^2- with [Au(Ph₃P)Cl] in acetonitrile was studied. The nature of the initial cation of the closo-dodecaborate and the reagent ratio was shown to affect complexing. The X-ray structures of compounds Au(Ph₃P) ₂[AgB₁₂H₁₂] (I) and [Au₉(Ph ₃P)₈]B₂₄H₂₃ (II) were determined. Complex I is the first example where B₁₂H ₁₂ ^2- is coordinated to silver(I) atoms in the face coordination mode. In complex II, B₁₂H ₁₂ ^2- is oxidized to the dimeric trianion B₂₄H ₂₃ ^3- where the two icosahedra are linked by a B-H-B′ bridge.