摘要
本文以２．６─二乙酰吡啶和１，３一二氨基一２一丙醇通过模板合成西佛碱大环配体Ｈ＿２Ｌ（图１），并合成了它的Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）及Ｆｅ（Ⅱ）的双核配合物，重点讨论了Ｃｏ＿２（ＨＬ）（ＣｌＯ＿４）＿２（ＮＯ＿３）·４Ｈ＿２Ｏ配合物的光谱与磁性。变温磁化率数据（４─３００Ｋ）通过用最小二乘法与理论方程拟合，得到磁参数为Ｊ＝－１．２４ｃｍ￣（－１），θ＝－０．２４Ｋ，表明配合物中ｃｏ（Ⅱ）－Ｃｏ（Ⅱ）间存在弱的反铁磁相互作用，分子间也存在反铁磁相互作用。
The schiff base macrocyclic ligand H_2L(Fig.1)was prepared by a template reaction of 2,6─diacetylpyridine with 1,3─diamino─2─hydroxypropane ,and its binuclear complexes of Co(Ⅱ),Ni(Ⅱ)of Fe(Ⅱ)have been synthesized. The spectra and magnetism of the complexCo_2(HL)(ClO_4)_2(NO_3)·4H_2O has been discussed.The data of variabIe temparaturemagnetic suceptibility(4─300K)were fitted with the least─square to the susceptibilityequation. The magnetic parameters was found to be J=-1.24cm￣(-1),θ=-0.24K,indicatingthat there is a weak antiferromagnetic spin─exchange interaction between Co(Ⅱ)and Co(Ⅱ)in the complex and a weak antiferromagnetic intermolccular interaction.
出处
《化学研究与应用》
CAS
CSCD
1994年第1期43-46,共4页
Chemical Research and Application
关键词
双核配合物
钴络合物
席夫碱大环
Schiff base macrocycle,Binuclear complex,Spectra,Magnetism
