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N-Heterocyclic Pincer Dicarbene Complexes of Iron(II):  C-2 and C-5 Metalated Carbenes on the Same Metal Center

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journal contribution
posted on 19.01.2004, 00:00 authored by Andreas A. Danopoulos, Nikolaos Tsoureas, Joseph A. Wright, Mark E. Light
Six- and five-coordinate Fe(II) complexes with the pincer ligand 2,6-bis(imidazolylidene)pyridine (C−N−C), [(C−N−C)Fe(MeCN)3][BPh4]2 and [(C−N−C)FeBr2], respectively, were synthesized. Substitution of tmeda in [FeCl2(tmeda)]2 by C−N−C gave the six-coordinate {[Fe(C−N−C)(C−N−C*)][FeCl4]}, in which one of the pincer ligands is bound to the metal via the 2- and 5-imidazole carbons.