Mixed ligand complexes of cobalt(II and III) — Molecular structure of bis- (4-acetophenylsalicylaldiminato)acetylacetonato cobalt(III)

Content Provider	Semantic Scholar
Author	De, Rajib Lal Banerjee, Indrajit Mukherjee, Alok Kamur Guha, Subhadra
Copyright Year	2000
Abstract	The bidentate Schiff bases, HL'(= N-4-acetophenylsalicylal-dimine), H"(=N-3-acetophenyl salicylaidimine) and HL'" (=N-4-acetophenyl-5-bromosalicylaldimine) do not form complexes with simple cobalt(II)salts, e.g.,Co(CH3C00)2.4H20 and CoCI 2.6H20 but undergo facile reactions with Co(acac)z.2H20 (acac=monoanion of acetylacetone) . Mi xed li gand co mpl exes of both cobalt(lll ). [Co(L)2(acac)] and cobalt(ll). [Co(L)(acac)] (L=L', L" , L"' ) have been isolated and characterised by elemental analyses and magne tic susceptibility measurements, electroni c. IR and mass spectral studi es and by single crystal X-ray crys tallographic structure analysis. The cobalt atom is octahedrally coordinated in which four li gand oxygen atoms define an equatorial plane; the two nitrogen ator.% of the L' ligands are in trans-ax ial posi tions .
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