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.

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