Electrochemistry of Dinuclear Organometallic [5]Trovacenyl Derivatives Bridged by Group 14 Elements (Si, Ge, Sn, Pb)

Abstract

Group 14 elements (Si, Ge, Sn, and Pb) were applied as spacers to construct new dinuclear organometallic [5]trovacenyl derivatives [(η7‐C7H7)V(η5‐C5H4)]2MR2 (2··, 3··, 4··, and 5··; M = Si, Ge, Sn, Pb; R = Me or Ph), which have been characterized by mass spectrometry, elemental analysis, and/or X‐ray diffraction analysis. A systematic electrochemical study by cyclic voltammetry indicates weak intramolecular electronic communication between two vanadium centers in the order of Si (2··) < Ge (3··) < Sn (4··) < Pb (5··). The impact of the substituents and the solvents on the electrochemical behavior of [(η7‐C7H7)V(η5‐C5H4)]2SnMe2 (5··) and [(η7‐C7H7)V(η5‐C5H4)]2SnPh2 (9··) was evaluated.