Solution and single-crystal Raman study of M(CO)6, where M = chromium, molybdenum, and tungsten

Abstract

For the three compounds M(CO)₆, where M = Cr, Mo, and W, ν₁₀(t_2g) has been observed in solution for the first time; a solvent-effect study of ν₁, ν₂, and ν₃ is also reported. Single-crystal Raman experiments yielded symmetry species consistent with currently accepted assignments for these molecules except in the region below 120 cm^–1 where many new lines were found for the molybdenum compound. In the ν(CO) region full factor-group splitting is shown by the ν₃(e_g) mode.