摘要
本文合成了一组新的不对称的双核配合物,[Cu_2(C_2O_4)_2terp]和〔Cu Zn(C_2O_4)_2terp〕(图1),terp表示联三吡啶。配合物〔Cu_2(C_2O_4)2terp〕的变温磁化率已测,其数值已用最小二乘法与Bleaney-Bowers方程拟合,求得交换积分J=-47.20cm^(-1)。文中还用Kahn理论解释了这种较弱的反铁磁自旋交换作用。
New asymmetric binuclear complexes [Cu2(C2O4)2terp] and [CuZn(C2O4) terp] (Fig.1) have been synthesized by reaction of K2Cu(C2O)·2H2O, Zn(Ac)2·2H2O or Cu(Ac)2·H2O and terp, where terp denotes terpyridyl. Based on IR,ESR,elemental analyses and electronic spectra, the complexes are proposed, to have oxalato-bridged structure and to consist of Cu(II) in a planar enviroment and another Cu(II) (or Zn(II)) in a tetragonal pyramidal enviroment. The complex C Cu2(C2O4)2terp] has been characterized with vailable-temperature suseptibility and data were least-squares fit to the Blenaey-Bowers equation. The exchange integral, J, was found to be -47.20 cm-1, indicating that a weaker antiferromagnetic spin-exchange interation operates between the metal ions. The weaker interaction can be interpreted using Kahn's theory.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1990年第2期193-197,共5页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金
关键词
铜-铜
铜-锌
双核配合物
草酸根桥
binuclear complex oxalato bridge dicopper( II) copper( II )-zinc( II ) magmetism
