Acta Phys. -Chim. Sin. ›› 2001, Vol. 17 ›› Issue (02): 181-184.doi: 10.3866/PKU.WHXB20010219

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Synthesis and EPR Spectra of Cu(Ⅱ) Complexe with Salicylidene Tyrosine Schiff Base

Shi Wei-Liang;Chen De-Yu   

  1. Department of Chemistry,Zhejiang University,Hangzhou 310027
  • Received:2000-06-22 Revised:2000-09-19 Published:2001-02-15
  • Contact: Chen De-Yu

Abstract: A new Schiff base derived from tyrosine and salicylidene and its copper(Ⅱ) complex have been synthesized and characterized by elemental analyses,molar conductances,thermal analyses,infrared spectra,electronic spectra and EPR spectra.The composition of the complex is K[CuL(Ac)]•H2O, where L=H13C16NO4. EPR spectra of the copper(Ⅱ) complex were investigated in various solvents at different temperatures.It is found that the linewidth of four hyperfine lines on solution spectra at room temperature is unequal and changes with mⅠ ,this could be satisfactorily explained by the relaxation effect.The relaxation time and the relaxation rate were calculated.By using spectral parameters from solution spectra at low temperature,the bonding parameters of Cu(Ⅱ) complex were calculated.The bonding characterization and stability of the complex were disscussed.The results show that the inplane 螵瞓ond and the inplane 皙瞓ond in the complex all play an important role.

Key words: Salicylidene tyrosine Schiff base, Copper(Ⅱ) complex, Synthesis, EPR spectra