physiochemically characterized. These complexes are structurally characterized by X-ray crystallography. In both complexes, the two copper centers are linked by two acetate or two nitrate groups in end-on bonding fashion. The copper–copper separation is 3.279 Å for 1 and 3.459 Å for 2. The copper ions are pentacoordinated in both complexes. The coordination geometry may be described as close to square pyramidal (SP)
两个新的双核端上双(μ-
乙酸根/μ-
硝酸根)桥接两个NNO供体
配体的络合物,即,[(L 1)的Cu(μ-CH 3 COO)2的Cu(L 1)]·4, 4-联
吡啶1和[(L 2)的Cu(μ-NO 3)2的Cu(L 2)] 2其中[L 1 = N' - [苯基(
吡啶-2-基)亚甲基]
呋喃-2-碳酰
肼,大号2 =(2 ë,4 ž) - ñ,2- dimethylhepta -2,4,6- trienamide -1-苯基-1-
吡啶-2- ylmethanimine(1:1)μ-CH 3 COO - =μ-
乙酸根和μ-NO 3- =μ-nitrato)已经制备并进行了物理
化学表征。这些配合物在结构上通过X射线晶体学表征。在这两种络合物中,两个
铜中心均以末端键合的方式通过两个
乙酸根或两个
硝酸根基团连接。
铜-
铜分离是3.279埃为1和3.459埃为2。
铜离子在两种络合物中均被五配位。配位几何可