Reactivity of the unsaturated dihydrides [Mn2(µ-H)2(CO)6(µ-L2)] towards boron, silicon, and tin hydrides [L2= Ph2PCH2PPh2, (EtO)2POP(OEt)2]. X-Ray crystal structures of [Mn2(µ-H)(µ-BH4)(CO)6(µ-Ph2PCH2PPh2)] and [Mn2(µ-SnPh2)2(CO)6{µ-(EtO)2POP(OEt)2}]

Abstract

The unsaturated dihydrocomplexes [Mn₂(µ-H)₂(CO)₆(µ-L₂)][L₂= Ph₂PCH₂PPH₂, dppm; L₂=(EtO)₂POP(OEt)₂, tedip] react under mild conditions with boron, silicon, or tin hydrides via insertion or elimination (H₂,C₆H₆) processes to afford the novel dimangano–main group element species [Mn₂(µ-H)(µ-BH₄)(CO)₆(µ-dppm)]; [Mn₂(µ-H₂SiPh₂)(CO)₆(µ-dppm)], [Mn₂(µ-H)(µ-HSnPh₂)(CO)₆(µ-L₂)], or [Mn₂(µ-SnPh₂)₂(CO)₆(µ-L₂)]; the crystal structures of the latter (L₂= tedip) and the tetrahydroborate complex have been determined.