摘要
以Ni(Ac)2.4H2O、乙腈和三乙胺在甲醇溶液中通过溶剂热法合成得到标题配合物[Ni(BEI)2].H2 O(BEI:二乙酰亚胺)。通过元素分析、红外光谱、X射线单晶衍射等方法对配合物结构进行了表征。该晶体属于方斜晶系,空间群为Pbca,晶胞参数为a=0.740 10(6)nm,b=1.297 91(13)nm,c=1.405 19(16)nm,α=90.00°,β=90.00°,γ=90.00°,V=1.349 8(2)nm3,Z=4,Dc=1.454Mg/m3,F(000)=624;最终偏差因子R1=0.054 8,wR2=0.162 3(对I>2θ(I)的衍射点)和R1=0.081 5,wR2=0.179 1(对所有衍射点)。依据晶体结构数据使用Gaussian 03W程序对配合物进行了量子化学计算,探讨了配合物结构单元的分子轨道能量、原子净电荷布居规律和成键特征,分析了其活性原子并预测了其稳定性。分析结果表明,配合物基态较稳定,中心镍原子周围的价键属于共价键范畴,电荷布局分析结果与晶体测定结果一致。
A nickel(Ⅱ) complex [Ni(BEI)2]·H2O(BEI=diacetyl amide) is prepared under solvothermal condition and characterized by IR,elemental analysis and X-ray diffraction methods.The complex crystallizes in orthorhombic system and space group Pbca are:a=0.740 10(6) nm,b=1.297 91(13) nm,c=1.405 19(16) nm,α=90.00°,β=90.00°,γ=90.00°,V=1.349 8(2) nm3,Z=4,Dc=1.454 Mg·m-3,F(000)=624;Final indices R1=0.054 8,wR2=0.162 3 [I2sigma(I)]and R1=0.081 5,wR2=0.179 1 [all data].The quantum chemical calculation is performed for crystal structure by means of Gaussian 03W program.The mulliken charge population,wiberg of the complex and frontier molecular orbitals are discussed.Active atoms and preestimated reliability are analyzed.Calculation results show that the structure of complex is more stable.The atomic net charge distribution in the molecular system indicates obvious covalent interaction between the coordinated atoms and nickel.These results are consistent with the structural analyses of the complex.
出处
《桂林理工大学学报》
CAS
北大核心
2011年第4期579-585,共7页
Journal of Guilin University of Technology
基金
广西高校优秀人才资助计划项目(RC2007021)
广西研究生教育创新计划项目(2009105960817M22)
关键词
酰胺
镍(Ⅱ)配合物
合成
晶体结构
量子化学计算
acidamide
nickel(II)coordination
crystal structure
quantum chemical calculation