Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Syntheses and Electronic Spectra of 2,2′-Isopropylidenedi-8-quinolinol, Its Nickel(II), and Copper(II) Chelates
Yoshinori YamamotoAkira MiuraAkira KawamataMasayoshi MiuraShinsuke Takei
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1978 Volume 51 Issue 12 Pages 3489-3495


The title ligand, which contains two 8-quinolinol (oxine) functions in one molecule, and the Ni(II) and Cu(II) chelates have been synthesized and characterized. Visible and ultraviolet spectra of the chelates and the ligand in several solvents have been measured. Square-coordination of the ligand to the metal has been revealed by a comparison of the d-d bands between the chelates and quadridentate Schiff base chelates in the literature. Intraligand transition bands of the title chelates and the solvent effects on the frequency shifts have been compared with those of the ligand, 8-hydroxy-1-methylquinolinium hydroxide, bis(8-quinolinolato)palladium(II), -copper(II), and -nickel(II), and have been discussed.

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