μ-氧桥联的双核铜(Ⅱ)配合物Cu_2(Salen)_2的合成、结构和光谱性质

Synthesis, Structure and Spectra Properties of a New μ O bridged Binuclear Copper(Ⅱ) Compound: Cu 2(Salen) 2

报道了双核铜（Ⅱ）配合物Ｃｕ２（Ｓａｌｅｎ）２（Ｓａｌｅｎ为Ｎ，Ｎ′－二水杨醛乙二胺席夫碱）的合成、表征和晶体结构分析．该晶体属单斜晶系，具有Ｃ２／ｃ（Ｎｏ．１５）空间群，ａ＝２．６５８０（５）ｎｍ，ｂ＝０．６９８６（１）ｎｍ，ｃ＝１．４７１８（３）ｎｍ，β＝９７．６３（３）°，Ｖ＝２．７０８（１）ｎｍ３，Ｚ＝８，Ｄｃ＝１．６１８Ｍｇ／ｍ３，Ｆ（０００）＝１３５２，Ｒ＝０．０８８，ｗＲ＝０．０７３，ＧＯＦ（Ｆ）＝０．８９．该化合物是由两个氧桥桥联的双核铜（Ⅱ）配合物，铜（Ⅱ）离子处于五配位的畸变四方锥配位环境中报道了双核铜（Ⅱ）配合物Ｃｕ２（Ｓａｌｅｎ）２（Ｓａｌｅｎ为Ｎ，Ｎ′－二水杨醛乙二胺席夫碱）的合成、表征和晶体结构分析．该晶体属单斜晶系，具有Ｃ２／ｃ（Ｎｏ．１５）空间群，ａ＝２．６５８０（５）ｎｍ，ｂ＝０．６９８６（１）ｎｍ，ｃ＝１．４７１８（３）ｎｍ，β＝９７．６３（３）°，Ｖ＝２．７０８（１）ｎｍ３，Ｚ＝８，Ｄｃ＝１．６１８Ｍｇ／ｍ３，Ｆ（０００）＝１３５２，Ｒ＝０．０８８，ｗＲ＝０．０７３，ＧＯＦ（Ｆ）＝０．８９．该化合物是由两个氧桥桥联的双核铜（Ⅱ）配合物，铜（Ⅱ）离子处于五配位的畸变四方锥?

The present paper covers the preparation, characterization and X ray analysis of a μ O bridged binuclear compound, Cu 2(Salen) 2. It crystallized in monoclinic system, space group C2/c (No. 15), with a =2.658 0(5) nm, b =0.698 6(1) nm, c =1.471 8(3) nm, β =97.63(3)°. V =2.708(1) nm 3, Z =8, D c=1.618 Mg/m 3, F (000)=1 352, R =0.088, wR =0.073, GOF( F )=0.89. The copper(Ⅱ) atom is five coordinated in a distorted square pyramidal environment to two oxygen atoms and two nitrogen atoms of one Salen ligand and a oxygen atom of the neighbor Salen ligand. Two neighbor copper(Ⅱ) units are connected by two μ O bridges to form a dimer. The shortest distance of the copper(Ⅱ) copper(Ⅱ) distance is 0.3117 nm, with the Cu_O_Cu angle is 93.9°. The IR, electronic spectra and ESR of the titled compound have been studied. The theoretic analysis of the ESR of the compound based on the electronic and ESR data have been made to give the parameters, g ∥=2.18, g ⊥= 2.05, k =0 7, indicating some covalence between the Cu(Ⅱ) and coordination atoms in the titled compound.