Transition-metal carbonyl derivatives of the germanes. Part II. Germylpentacarbonylmanganese

Abstract

Reaction of bromogermane with NaMn(CO)₅ in ether or tetrahydrofuran gives germylpentacarbonylmanganese in up to 86% yield. Both GeH₃Mn(CO)₅ and GeD₃Mn(CO)₅ have been prepared and physical properties, i.r., Raman, n.m.r., and mass spectra are reported; although a molecular symmetry of only C_s is expected, the vibrational spectrum closely follows selection rules predicted assuming local C_3v and C_4v symmetry at Ge and Mn respectively, and an assignment is proposed on this basis.