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含Schiff碱配体的超分子Co(Ⅱ)和Cu(Ⅱ)配合物的合成、表征及晶体结构(英文) 被引量:3

Supramolecular Cobalt(Ⅱ) and Copper(Ⅱ) Complexes with Schiff Base Ligand:Syntheses, Characterizations and Crystal Structures
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摘要 合成了2个含肟基Schiff碱Co(Ⅱ)和Cu(Ⅱ)配合物Co(L^1)_2(1)和Cu(L^2)_2(2)。X射线单晶衍射分析结果表明,配合物1和2具有相似的结构,均由1个中心金属离子和2个双齿配体单元组成,且金属离子的配位数为4,具有平面四边形结构。配合物1和2均属于三斜晶系,空间群均为P1。配合物1的晶胞参数为a=1.156 40(11)nm,b=1.376 81(12)nm,c=1.388 59(13)nm,α=63.776 0(10)°,β=87.400(2)°,γ=84.280(2)°;配合物2的晶胞参数为a=1.156 42(9)nm,b=1.372 19(13)nm,c=1.404 40(12)nm,α=63.683 0(10)°,β=87.227(2)°,γ=84.883 0(10)°。2个配合物分子均通过分子间C-H…O和C-H…π氢键作用以及分子间π…π堆积作用相连接,形成了二维层状超分子结构。 Supramolecular cobalt(U) and copper(H) complexes, Co(L^1)2 (1) and Cu(L^2)2 (2), (HL^1=1-(4-{[(5-chlor-2- hydroxyphenyl)methylene]amino}phenyl)ethanone O-benzyloxime, HL2=1-(4-{[(3,5-bromine-2-hydroxyphenyl)meth- ylene]amino}phenyl)ethanone O-benzyloxime), have been synthesized and characterized structurally. X-ray structure showed that complexes 1 and 2 have the similar structure, consisting of one metal ion, two ligand units. The complexes 1 and 2 both crystallize in triclinic system, space groups are P1 with the unit cell parameters for complex 1:a=1.156 40(11) nm, b=1.376 81(12) nm, c=1.388 59(13) nm, α=63.776 0(10)°, β=87.400(2)°, γ= 84.280(2)°, and for complex 2:a=1.156 42(9) nm, b=1.372 19(13) nm, c=1.404 40(12) nm, α=63.683 0(10)°, β= 87.227(2)°, γ=84.883 0(10)°. The Co(Ⅱ) and Cu(Ⅱ) atoms are both four-coordinated in a trans-CuN2O2 slightly distorted square-planar geometry by two hydroxyl O and two imine N atoms from two symmetry-related N,O- bidentate Sehiff base ligands. Moreover, every Co(Ⅱ) or Cu(Ⅱ) complex molecule links some other molecules into an infinite 2D layer supramolecular structure via intermolecular C-H-…O hydrogen bonding, C-H…π and π-π stacking interactions between neighboring benzene rings. CCDC: 1003361, 1; 1473798, 2.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2016年第5期913-920,共8页 Chinese Journal of Inorganic Chemistry
基金 兰州交通大学青年科学基金项目(No.2011007) 兰州交通大学研究生教改项目(No.160012) 甘肃省科技支撑计划项目(No.1204GKCA052)资助
关键词 钴(Ⅱ)配合物 铜(Ⅱ)配合物 晶体结构 SCHIFF碱配体 超分子结构 Co(Ⅱ) complex Cu(Ⅱ) complex crystal structure oxime-type ligand supramolecular
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