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

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Authors
Zimmerman, Joshua R.
Smucker, Bradley W.
Dain, Ryan P.
Van Stipdonk, Michael J.
Eichhorn, David M.
Advisors
Issue Date
2011-07-15
Type
Article
Keywords
Research Projects
Organizational Units
Journal Issue
Citation
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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Publisher
Elsevier
Journal
Book Title
Series
Inorganica chimica acta
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DOI
ISSN
0020-1693
EISSN