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一种不对称Salamo-型螯合配体及其钴(Ⅱ)配合物:合成、表征与晶体结构(英文) 被引量:4

An Asymmetrical Salamo-Type Chelating Ligand with Its Cobalt(Ⅱ) Complex:Syntheses, Characterizations and Crystal Structures
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摘要 合成了一种不对称Salamo-型螯合配体4-氯-6′-甲氧基-2,2′-[乙二氧双(氮次甲基)]二酚(H2L)及其钴髤配合物[Co(L)(H2O)],并通过元素分析、红外光谱、紫外-可见吸收光谱及X-射线单晶衍射方法对配体H2L及其配合物进行了表征。结果表明:配体属单斜晶系,P21/n空间群,配合物属正交晶系,Iba2空间群。配合物为单核结构,由1个Co髤离子和1个四齿的L2-配体单元和1个配位水分子组成,中心Co髤原子的配位数是5,且具有稍微扭曲的三角双锥几何结构,而配合物分子通过分子间C8-H8···Cl1氢键组装成1D链状的超分子结构。 A salamo-type chelating ligand 4-chloro-6'-methoxy-2,2'-[ethylenediyldioxybis (nitrilomethylidyne)] diphenol (H2L) and its complex [Co(L)(H20)], have been synthesized and characterized by elemental analyses, [R spectra, UV-Vis spectra and X-ray single crystal diffraction method. The ligand crystallizes in the monoclinic system, space group P21/n with cell parameters: a=1.555 54(17) nm, b=0.470 55(5) nm, c=2.423 3(2) nm, β=106.108(2)°, Z=4, V=1.704 1 (3)nm3, R1=0.055 3, wR2=0.063 3, and the Co(H) complex crystallizes in the orthorhombic system, space group Iba2 with cell parameters: a=1.934 27(14) nm, b=2.497 20(19) nm, c=0.752 96(5) nm, Z=8, V=3.637 0(5) nm3, R1=0.045 4, wR2=0.083 9, the Co(H) complex is mono-nuclear structure. The five-coordinated Co(n) atom of the complex lies in the N202 coordination sphere of one bis-oxime ligand, and the Co(I) atom of the complex has a slightly distorted trigonal bipyramid geometry, while the molecules also assemble to a 1D infinite chain-like supramolecular structure by intermolecular C8-H8… C11 hydrogen bond. CCDC: 940101,H2L; 940100, Co(1) complex.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2014年第8期1911-1919,共9页 Chinese Journal of Inorganic Chemistry
基金 国家自然科学基金(No.21361015) 甘肃省高校科技支撑基金(No.212086) 兰州交通大学科技支撑基金(No.ZC2012003)资助项目
关键词 Salamo-型螯合配体 钴(Ⅱ)配合物 合成 晶体结构 超分子作用 salamo-type ligand Co(1) complex synthesis crystal structure supramolecular interaction
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