[Re2(µ-H)3H4{CH3C(CH2PPh2)3}]–, the first example of an MMH7 co-ordination sphere

Abstract

The complex Et₄N[Re₂H₇{MeC(CH₂PPh₂)₃}]·MeCN, prepared by reacting (Et₄N)₂ReH₉ and MeC(CH₂PPh₂)₃ in acetonitrile, is shown to contain the Re₂(µ-H)₃ group with the Re atoms linked by a σ²π_∥²π_⊥² triple bond and with the ligand phosphorus atoms co-ordinated to one Re atom while four terminal hydride ligands complete a distorted pentagonal bipyramid of H atoms about the second Re atom.