title: Iron and Cobalt Complexes of 2,6-Diacetylpyridine-bis(R-thiosemicarbazone) (R=H, phenyl) Showing Unprecedented Ligand Deviation from Planarity.
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.
authors.affiliation: Department of Chemistry, Wichita State University, Wichita, KS 67260, USA.
authors.forename: Anangamohan
authors.initials: A
authors.lastname: Panja
authors.forename: Charles
authors.initials: C
authors.lastname: Campana
authors.forename: Christopher
authors.initials: C
authors.lastname: Leavitt
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Van Stipdonk
authors.forename: David M
authors.initials: DM
authors.lastname: Eichhorn