Journal of the Chemical Society, Dalton Transactions p. 1899 - 1902 (1982)
Update date:2022-09-26
Topics:
Mukhedkar, Vasudha A.
Bhagwat, Urmila A.
Mukhedkar, Anant J.
The ligand isomeric complexes of N-2-thenylsalicylaldimine with Pd(II) were synthesised.The nature of the isomerism was characterised by the !H n.m.r. spectral data for the azomethine group, C=N group i.r. frequencies, and u.v spectra.The complexes with Cr(III), Fe(III), Co(III), Ni(II), Cu(II), and Pt(II) were obtained in the isomeric form (A), i.e.SC4H3CH2N=CHC6H4OH-o, and those of V(IV) an Zn(II) were obtained in the isomeric form (B), i.e.SC4H3CH=NCH2C6H4OH-o.From its solubility characteristics and 1H n.m.r. spectera, the palladium(II) complex containing ligand isomer (A) was shown to be a binuclear complex in which the phenolic o xygen displays three-co-ordination.The subnormal magnetic moment at room temperature and the cryomagnetic data of the copper(II) complex suggested a similar binuclear configuration having a large antiferromagnetic interaction(J=-175cm-1,g=2.4).The cryomagnetic data of the iron(lll) complex indicated a thermal equilibrium between nearly equi-energetic spin-paired(2T2) and spin-free(6A1) configurations of iron(lll).Co-ordination of the thiophene sulphur was indicatedin the (B) isomeric form of the complexes of Pd(ll) and Zn(ll).
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Doi:10.1016/S0040-4039(00)87232-9
(1982)Doi:10.1021/ja01098a042
(1953)Doi:10.1134/S1070428015100073
(2015)Doi:10.1016/S0040-4039(01)80417-2
(1989)Doi:10.1016/j.tetlet.2004.12.031
(2005)Doi:10.1021/jo00155a031
(1983)
