Tridentate N(2)S ligand from 2,2'-dithiodibenzaldehyde and N,N-dimethylethylenediamine: synthesis, structure, and characterization of a Ni(II) complex with relevance to Ni Superoxide Dismutase
Zimmerman, Joshua R. Smucker, Bradley W. Dain, Ryan P. Van Stipdonk, Michael J. Eichhorn, David M.
Zimmerman, Joshua R.
Smucker, Bradley W.
Dain, Ryan P.
Van Stipdonk, Michael J.
Eichhorn, David M.
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2011-07-15
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Inorganica chimica acta. 2011 Jul 15; 373(1): 54-61.
Abstract
Nickel Superoxide Dismutase (NiSOD) and the A-cluster of Carbon Monoxide Dehydrogenase/Acetyl Coenzyme A Synthase (CODH/ACS) both feature active sites with Ni coordinated by thiolate and amide donors. It is likely that the particular set of donors is important in tuning the redox potential of the Ni center(s). We report herein an expansion of our efforts involving the use of 2,2'-dithiodibenzaldehyde (DTDB) as a synthon for metal-thiolate complexes to reactions with Ni complexes of N,N-dimethylethylenediamine (dmen). In the presence of coordinating counterions, these reactions result in monomeric square-planar complexes of the tridentate N(2)S donor ligand derived from the Schiff-base condensation of dmen and DTDB. In the absence of a coordinating counterion, we have isolated a Ni(II) complex with an asymmetric N(2)S(2) donor set involving one amine and one imine N donor in addition to two thiolate donors. This latter complex is discussed with respect to its relevance to the active site of NiSOD.
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Elsevier
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Inorganica chimica acta
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0020-1693