Synthesis, magnetic and electrochemical properties of binuclear copper(II) complexes of pyridoxal hydrazones
作者:Madan Mohan、Niranjan K. Gupta、Munesh Kumar、Narendra K. Jha、William E. Antholine
DOI:10.1016/s0020-1693(00)85517-6
日期:1992.7
variable temperature magnetic moments, however, indicate the presence of very weak intramolecular antiferro- magnetic interactions (−2J ≈~90 cm−1) in between the copper(II) centers in the complexes. The ESR spectral data at 77 K are characteristic of binuclear CuCu complexes and exhibit a seven-line pattern in the low field gl region. The cyclic voltammograms of each complex showed two oxidation waves
摘要合成了吡new醛苯甲酰hydr(PBH),吡ido醛邻羟基苯甲酰hydr(PHBH),吡ido吡啶甲基酰yl(PPH),吡ido烟酰yl(PNH)和吡x异烟酰yl(PINH)合成的双核铜(II)配合物。分析,磁性,光谱,ESR和电化学方法。所有复合物在室温下均表现出正常的磁矩。然而,可变温度磁矩表明在配合物中的铜(II)中心之间存在非常弱的分子内反铁磁相互作用(-2J≈〜90 cm-1)。在77 K处的ESR光谱数据是双核CuCu络合物的特征,并且在低场gl区域表现出七线模式。