摘要
本文合成了两个新型双核配合物,[Cu(samcn)Ni(L)_2]和[Cu(sampn)Ni(L)_2].samcn^(4-),sampn^(4-)及L分别表示N,N′-乙二水杨酰胺根阴离子,N,N′-1,2-丙二水杨酰胺根阴离子和5-硝基-1,10-菲绕啉(NO_2-phcn).经元素分析,IR和电子光谱等方法已推定配合物具有酚氧桥结构和Cu(Ⅱ)及Ni(Ⅱ)的配位环境分别为平面四方及八面体构型.配合物的变温磁化率已测(4-300K),其数值已用最佳拟合方法和从自旋哈密顿算符,H=-2JS_1·S_2导出的磁方程拟合,求得交换参数为J=-1.77cm^(-1)(samcn)和J=-1.74cm^(-1)(sampn),表明两个Cu(Ⅱ)-Ni(Ⅱ)双核配合物中有很弱的反铁磁性自旋交换相互作用.
New binuclcar complexes, [Cu(samcn,Ni(NO2-phcn)2] and [Cu(sampn)Ni(NQ2-phcn)2] were synthesized, samcn4-, sampn4- and NO2-phen denote N,N'-ethylenedisalicylamidate anion, N,N'-1,2-propancdisalicylamidate anion and 5-nitro-1,10-phenanthrolinc rcspcccively. Based on IR, elemental analyses and electronic spectra the complexes arc proposed to have phcnoxy-bridgcd structure and to consist of a Cu(Ⅱ) in a planar environment and Ni(Ⅱ) in a distorted octahedron. The complexes have been characterized with variable tcmparaturc magnetic susceptibility (4-300K) and the date were the best fit to a susceptibilityequation derived from spin Hamilton, H=2JS1 · S2. The exchange integral, J, was found to be -1.77cm-1 for [Cu(samcn)Ni(NO2-phen)2] and -1.74cm-1 for [Ca(sampn)Ni(NO2-phcn)2], indicating that a extremely weak antifcrromagnetic spin-exchange interaction operates between the metal ions.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1991年第3期257-261,共5页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助课题
