A Bridging Selenoacyl Complex via Alkynylselenolatoalkylidyne Rearrangement

Abstract

The alkynylselenolatoalkylidyne complex [Mo(≡C−Se−C≡CSiMe3)(CO)2{HB(pzMe2)3}] (pz = pyrazol-1-yl) reacts with [RhCl(PPh3)3] via an unusual C−Se bond cleavage/formation sequence to provide the heterodinuclear bridging selenoacyl complex [MoRh(μ⊥-SeCC≡CSiMe3)Cl(CO)2(PPh3){HB(pzMe2)3}], the crystal structure of which reveals a RhMoCSe tetrahedrane core.