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2,6-Bis(benzimidazol-2-yl)pyridine complexes of group 14 elements
Ala'aeddeen Swidan1, P Blake J St Onge, Justin F Binder
1Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada. cmacd@uwindsor.ca.
Abstract:
Treatment of MCl2 (M = Ge or Sn) with 2,6-bis(benzimidazol-2-yl)pyridine (G-BZIMPY, G = NBn, N(3,5-CF3)Bn, NAllyl and O) yielded the self-ionization products [G-BZIMPYMCl][MCl3] (1-6) in high yields (75-98%). Reduction reactions are examined and the nickel complexes 8 and 9 ([(NBn-BZIMPY)2Ni][MCl3]2) are isolated from the reaction of Ni(COD)2 with 1 and 2 respectively. [NBn-BZIMPYSnCl][SnCl3] shows a significantly stronger MLCT band in the UV-vis absorption spectrum than its germanium counterparts, with germanium complexes exhibiting negative solvatochromism that is not observed in tin complexes.
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