Synthesis and Characterization of Cobalt NCN Pincer Complexes.

ABSTRACT: A series of cobalt complexes, stabilized by a monoanionic tridentate NCN pincer ligand, was synthetized and characterized. Preparation of the paramagnetic 15 VE complex [Co(NCN^CH2-Et)Br] (1) was accomplished by transmetalation of Li[2,6-(Et₂NCH₂)₂C₆H₃] with CoBr₂ in THF. Treatment of this air-sensitive compound with NO gas resulted in the formation of the diamagnetic Co(III) species [Co(NCN^CH2-Et)(NO)Br] (2) as confirmed by X-ray diffraction. This complex features a strongly bent NO ligand (Co-N-O∠135.0°). The ν_NO is observed at 1609 cm^-1 which is typical for a bent metal-N-O arrangement. Coordinatively unsaturated 1 could further be treated with pyridine, isoc

SUBMITTER: Pecak J 

PROVIDER: S-EPMC8596404 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature