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Title: Mixed ligand complexes of cobalt(II and III) — Molecular structure of bis-(4-acetophenylsalicylaldiminato)acetylacetonato cobalt(III)
Authors: De, Rajib Lal
Banerjee, Indrajit
Mukherjee, Alok K
Guha, Subhadra
Issue Date: Oct-2000
Publisher: NISCAIR-CSIR, India
Abstract: The bidentate Schiff bases, HL'(= N-4-acetophenylsalicylal-dimine), H"(=N-3-acetophenylsalicylaidimine) and HL'"(=N-4-acetophenyl-5-bromosalicylaldimine) do not form complexes with simple cobalt(II)salts, e.g.,Co(CH3COO)2.4H2O and CoCl2.6H2O but undergo facile reactions with Co(acac)2.2H2O (acac=monoanion of acetylacetone). Mixed ligand complexes of both cobalt(III), [Co(L)2(acac)] and cobalt(II), [Co(L)(acac)] (L=L', L", L"') have been isolated and characterised by elemental analyses and magnetic susceptibility measurements, electronic, IR and mass spectral studies and by single crystal X-ray crystallographic structure analysis. The cobalt atom is octahedrally coordinated in which four ligand oxygen atoms define an equatorial plane; the two nitrogen atoms of the L' ligands are in trans-axial positions.
Page(s): 1050-1054
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.39A(10) [October 2000]

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