Iron and cobalt complexes of 2,6-Diacetylpyridine-bis(R-thiosemicarbazone) (R=H, phenyl) showing unprecedented ligand deviation from planarity
Date
2009-03-02Author
Panja, Anangamohan
Campana, Charles
Leavitt, Christopher M.
Van Stipdonk, Michael J.
Eichhorn, David M.
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Inorganica chimica acta. 2009Mar2; 362(4): 1348-1354.
Abstract
The syntheses, characterization, and single-crystal X-ray crystal structures are reported for four complexes of iron and cobalt with the pentadentate ligands, 2,6-diacetylpyridinebis(thiosemicarbazone) (H(2)L(1)) and 2,6-diacetylpyridinebis-(phenylthiosemicarbazone) (H(2)L(2)), including a cobalt dimer displaying a deviation from planarity which is unprecedented for this class of ligands and allows the ligand to occupy five positions of a pseudo-octahedral coordination sphere. This dimer reacts with KCN to produce a mononuclear complex of relevance to the active site of cobalt nitrile hydratase.
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