σ-Alane complexes of chromium, tungsten, and manganese

Abstract

Photolytic ligand displacement and salt metathesis routes have been exploited to give access to κ 1 σ-alane complexes featuring Al-H bonds bound to [W(CO) 5] and [Cp′Mn(CO) 2] fragments, together with a related κ 2 complex of [Cr(CO) 4]. Spectroscopic, crystallographic, and quantum chemical studies are consistent with the alane ligands acting predominantly as σ-donors, with the resulting binding energies calculated to be marginally greater than those found for related dihydrogen complexes. © 2012 American Chemical Society.