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配合物[Co(p-MBA)_2(phen)(H_2O)]·(p-MBA)的水热合成、晶体结构及量子化学研究

Hydrothermal Synthesis, Crystal Structure and Quantum Chemistry of the Complex [Co(p-MBA)_2(phen)(H_2O)]·(p-MBA)
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摘要 通过水热反应,合成了一个新的单核钴髤配合物[Co(p-MBA)2(phen)(H2O)]·(p-MBA),用元素分析和红外光谱对配合物进行了表征。X-射线单晶衍射表明,配合物属三斜晶系,空间群P1,晶胞参数:a=1.06588(8)nm,b=1.12873(8)nm,c=16.1181(13)nm,α=76.9890(10)°,β=71.2280(10)°,γ=63.6830(10)°,V=1.6379(2)nm3,Z=2,Dc=1.443g·cm-3,R1[I>2σ(I)]=0.0444,wR2[I>2σ(I)]=0.0881。钴髤分别与来自1个邻菲咯啉的2个氮原子、2个对甲基苯甲酸根的3个氧原子和1个水分子中的1个氧原子配位,形成变形的八面体结构。配合物通过强的O-H…O氢键作用形成了二聚体结构,该二聚体又通过分子间弱的C-H…O氢键作用形成了一维链状结构。对配合物中[Co(p-MBA)(phen)(H2O)2]结构单元进行了量子化学从头计算。 The tiltle complex [Co( p-MBA)2(phen)(H2O)]·( p-MBA) ( p-MBA=p-methoxybenzoic acid, phen=1,10-phenanthroline) was hydrothermally synthesized and characterized by elemental analysis and IR spectra. Its crystal structure was determined by X-ray single crystal diffraction study. The crystal belongs to triclinic with space group P1, a=1.065 88(8) nm, b=1.128 73(8) nm, c=16.118 1(13) nm, α=76.989 0(10)°, β=71.228 0(10)°, γ= 63.683 0(10)°, V=1.637 9(2) nm3, Z=2, Dc=1.443 g·cm-3, R1[I2σ(I)]=0.044 4, wR2[I2σ(I)]=0.088 1. The cobalt(Ⅱ) ion is six-coordinated with two nitrogen atoms from one phen, three oxygen atoms from two p-MBA and one water oxygen atom, forming a distorted octahedral configuration. A dimer structure was formed by strong O-H … O hydrogen bonds. Weak intermolecular C-H…O hydrogen bonds link the molecules into one-dimensional chain. The quantum chemistry calculation on the [Co( p-MBA)2(phen)(H2O)] has been performed by means of G98W package and taking Lanl2dz basis set.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2010年第9期1669-1674,共6页 Chinese Journal of Inorganic Chemistry
基金 泰山学院人才引进项目(NoY06-2-08)资助
关键词 对甲氧基苯甲酸 邻菲咯啉 钴髤配合物 晶体结构 从头计算 p-methoxybenzoic 1 10-phenanthroline cobalt(Ⅱ) complex crystal structure quantum chemistry calculation
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