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Ru-Complexes of an anionic germabenzenyl ligand
Shiori Fujimori1, Yoshiyuki Mizuhata, Norihiro Tokitoh
1Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan. tokitoh@boc.kuicr.kyoto-u.ac.jp mizu@boc.kuicr.kyoto-u.ac.jp.
Abstract:
Ruthenium complexes having an anionic germabenzenyl ligand, [Cp*Ru{η1,η3-GeC5(t-Bu)H4}]2 (1) and [Cp*Ru{η1-GeC5(t-Bu)H4}{[η1,η5-GeC5(t-Bu)H4]RuCp*}2] (2), have been synthesized by the reaction of germabenzenylpotassium, KGeC5(t-Bu)H4, with [Cp*RuCl]4. Complexes 1 and 2 exhibit both σ- and π-type coordination and can be regarded as the first examples of a transition-metal substituted benzenoid of heavier Group 14 elements. The isolated complexes 1 and 2 have been characterized using NMR and UV-vis spectroscopy, X-ray crystallographic analysis, and theoretical calculations.
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