Bisamidate and mixed amine/amidate NiN2S2 complexes as models for nickel-containing acetyl coenzyme A synthase and superoxide dismutase: an experimental …

…, J Thomas, R Staples, J McCraken, J Shearer…

Index: Mathrubootham, Vaidyanathan; Thomas, Jason; Staples, Richard; McCraken, John; Shearer, Jason; Hegg, Eric L. Inorganic Chemistry, 2010 , vol. 49, # 12 p. 5393 - 5406

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Citation Number: 38

Abstract

Two mononuclear NiN2S2 square-planar complexes, one with bisamidate ligation (Et4N) 2 (Ni (L1))· 2H2O (2) and the other with the mixed amine/amidate ligation K (Ni (HL2))(3), have been synthesized as models for the active site of Nid-ACS and Ni-SODred, respectively. Experimental and computational studies on the models suggest that Ni-SOD utilizes the NiN2S2 mixed amine/amidate coordination environment to achieve Ni-centered oxidation ...