Synthesis, Structures, and Reactivity of Chelating Bis-N-Heterocyclic-Carbene Complexes of Iron (II)

S Zlatogorsky, CA Muryn, F Tuna, DJ Evans…

Index: Zlatogorsky, Sergey; Muryn, Christopher A.; Tuna, Floriana; Evans, David J.; Ingleson, Michael J. Organometallics, 2011 , vol. 30, # 18 p. 4974 - 4982

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Citation Number: 62

Abstract

Distorted tetrahedral (bis-carbene) FeX2 complexes can be synthesized by direct metalation of chelating bisimidazolium salts, containing CH2 or phenylene linkers, with Fe (N (SiMe3) 2) 2 (THF). For methylenebis (NR-imidazole-2-ylidene)((RC) 2CH2), the high-spin complexes ((RC) 2CH2) FeX2 (R= iPr or 2, 6-di-isopropylphenyl (DIPP), X= I or Br) are isolated in good to excellent yield. In contrast the phenylene-linked congener ((iPrC) 2Ph) ...