Mono- and di-nuclear nickel(II) complexes with mixed N/S-donor ligands: Syntheses, structures and physical properties
Panja, Anangamohan Eichhorn, David M.
Panja, Anangamohan
Eichhorn, David M.
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2012-05-03
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Article
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Keywords
Thiosemicarbazone ligands,Nickel complexes,SNS and NNS ligands,X-ray crystal structure
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Citation
Panja, Anangamohan & David M., Eichhorn. 2012. “Mono- and di-nuclear nickel(II) complexes with mixed N/S-donor ligands: Syntheses, structures and physical properties”. Inorganica Chimica Acta, Available online 3 May 2012.
Abstract
Two new Ni(II) complexes are reported with tridentate thiosemicarbazone ligands derived from Schiff-base condensation with phenylthiosemicarbazide. Complex 1, a novel dinuclear Ni(II) complex of a SNS ligand synthesized by reaction with 2,2′-dithiodibenzaldehyde (DTDB), adopts a butterfly-type structure in which thiolate derived from DTDB resides in the bridging position. Complex 2-(NO3)2, a mononuclear Ni(II) complex of a NNS ligand synthesized by reaction with pyridine carboxaldehyde features two ligands spanning three meridional positions on the pseudo-octahedral coordination sphere of the Ni(II) center. The thiosemicarbazone-S is coordinated to the Ni(II) center in 1 in the deprotonated anionic thiolate-S form, while the neutral thione-S is present in 2-(NO3)2. To the best of our knowledge complex 1 is the first example of a dinuclear bis(thiolate)-bridged Ni(II) complex with NS3 coordination involving a thiosemicarbazide moiety.
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Elsevier
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Inorganica Chimica Acta;2012
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0020-1693