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Cobalt(III) and Low Spin Cobalt(II) Complexes of the Two Highly Flexible Hexadentate Ligands 1,3-di(o-salicylaldiminophenylthio)propane and 1,2-di(o-salicylaldiminophenylthio)xylene

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The hexadentate dibasic Schiff base ligands 1,3-di(o-salicylaldiminophenylthio)propane (H2DSAL PTP) and 1,2-di(o-salicylaldiminophenylthio)xylene (H2DSAL PTX), with N2S2O2 donor atoms, reacted with Co(II) salts, Co X2ยท6H2O (X=Cl, ClO4), to give the complexes [Co(DSAL PTP)]2[CoCl4] (1), [Co(DSAL PTX)(NH3)2] (2) [Co(DSAL PTP)]ClO4 (3) and [Co(DSAL PTX)]ClO4 (4). H2DSAL PTP reacted with CoCl2 to provide a mixed valency complex containing Co(II) and Co(III) acceptor centres (1). The Co(III) centre in (1) is coordinated to the hexadentate ligand and the tetrachloro cobalt(II) ion is present as the counter anion. From the molecular structure of (1) it is observed that $[{\rm CoCl}_4]^{2-}$
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Document Type: Research Article

Affiliations: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Calcutta 700 032, India

Publication date: January 1, 2002

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