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ESR spectra studies of Cu(II) 2, 4-dihydroxybenzaldehyde tyrosine complex

✍ Scribed by De-Yu Chen; Wei-Liang Shi

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 264 KB
Volume: 18
Category: Article
ISSN: 0256-7660
DOI: 10.1002/cjoc.20000180613

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✦ Synopsis

Abstract

A novel Schiff base derived from 2,4‐dihydroxybenzaldehyde and tyrosine and its copper(II) complex have been synthesized and characterized. The composition of the complex is K[CuL]·H~2~O, where L=H~11~C~26~NO~5~. ESR spectra of the copper(II) complex were investigated at different temperatures and in various solvents. The second order effect and the relaxation effect were observed in the solution spectrum at room temperature, which was satisfactorily explained by spin Hamiltonian. The bonding parameters of copper(II) complex were calculated using spectral parameters from ESR spectra at low temperature. Its banding characterization and stability were dismissed. The result shows that the in‐plane α‐bond and the in‐plane π‐bond in the complex all play an important role.

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