One-dimensional antiferromagnetic cycloheptatrienyl molybdenum and tungsten compounds

Abstract

The 17 -electron compounds [M(η-C₇H₇)LX₂](M = Mo, L = MeCN, X = I 1; M = Mo, L = PMe₃, X = I 2; M = W, L = MeCN, X = I 3; M = W, L = PMe₃, X = I 4; M = W, L = PMe₃, X = Br 5) have been prepared. All exhibit antiferromagnetic interactions with temperatures at χ_max ranging from 12 to 17 K. The magnetic susceptibility data have been described by one-dimensional magnetic models. The crystal and molecular structures of [Mo(η-C₇H₇)(MeCN)l₂]1 have been determined, and confirm the one-dimensional structure.