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

Group 14 elements (Si, Ge, Sn, and Pb) were applied as spacers to construct new dinuclear organometallic [5]trovacenyl derivatives [(η 7 ‐C 7 H 7 )V(η 5 ‐C 5 H 4 )] 2 MR 2 ( 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 [(η 7 ‐C 7 H 7 )V(η 5 ‐C 5 H 4 )] 2 SnMe 2 ( 5 ·· ) and [(η 7 ‐C 7 H 7 )V(η 5 ‐C 5 H 4 )] 2 SnPh 2 ( 9 ·· ) was evaluated.