摘要
本文合成了两个新的双核配合物,[Cu(sampn)Ni(L)_2],sampn^(4-)表示N,N′-1,2-丙二水杨酰胺根阴离子,L表示2,2-联吡啶(bpy)或1,10-菲咯啉(phen),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),其数值用最小二乘法和从自旋哈密顿算符 =-2J _1 _2导出的磁方程拟合,求得交换参数为J=-1.90cm^(-1)(bpy)和J=-1.68cm^(-1)(phen),表明两个Cu(Ⅱ)-Ni(Ⅱ)双核配合物中有弱的反铁磁自旋交换相互作用。
New metal complexes of type [(Cu (sampn) Ni(L)_2] are synthesized, where sampn^(4-) denotes N, N'-1, 2-propanedisalicylamidate anion and L denotes 2, 2'-dipyridyl (bpy) or 1, 10-phenanthroline (phen). Based on elemental analyses, IR, and electronic spectra the complexes are proposed to have phenoxy-bridged 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-temparature magnetic susceptipility (4—300K) and the data are least-squares fit to a susceptibility equation derived from spin Hamilton, =2J _1 _2. The exchange integral, J, is found to be-1.90(bpy) and -1.68 (phen)cm^(-1) indicating that an extremely weak antiferromagnetic spinexchange interaction operates between both metal ions.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1990年第8期797-800,共4页
Acta Chimica Sinica
基金
国家自然科学基金
