Addition reactions of the unsaturated rhenium cluster anion [Re4(.mu.-H)3(.mu.3-H)2(CO)12]- with carbon monoxide, triphenylphosphine and acetonitrile and characterization of an unstable adduct with water. X-ray crystal structure of the tetraethylammonium salt of the derivative [Re4(.mu.-H)4(.mu.3-H)(CO)12(PPh3)

Abstract

The tetrahedral cluster anion [Re 4 (μ-H) 3 (μ 3 -H) 2 (CO) 12 ] - easily adds donor molecules L, due to its unsaturation (58 cluster valence electrons). The reaction process changes significantly on varying the nature of L. In the presence of CO, two carbonyls are added, leading to the previously known butterfly derivative Re 4 (μ-H) 5 (CO) 14 ] - .