K. S. Patel, A. A. Adimado
1981
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0
Influential Citations
4
Citations
Journal
Journal of Inorganic and Nuclear Chemistry
Abstract
Abstract The electronic and infrared spectral properties of trivalent metal complexes, M(fbd)3 and (M(tffbd)3 (where M = Al, Cr, Mn, Fe, Co; fbd = 1-(2-furyl)1-,3-butanedionato, tffbd = 4,4,-trifluoro-1-(2-furyl)1–3,-butanedionate) are reported. Substitution of a methyl group in 2,4-pentanedionato by a furyl ring, and a methyl group in 1-(2-furyl)-1,3-butanedionato by a trifluoromethyl are found to strengthen the CO and CC and weaken the MO bonds of the metal chelate rings. The magnitude of the MO stretching modes follow the order: Co(III) > Al(III) > Cr(III) > Mn(III) > Fe(III). However, the lowest spin-allowed π 3 →π 4 ∗ transition of the β-ketoneolate anion, although found to be metal sensitive, does not follow the same trend. The values of the magnetic moments are comparable to those of the corresponding octahedral metal chelates, M(tbd)3 and M(tftbd)3.