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[Co(bamp)(aep)Cl]2+体系2个几何异构体的理论研究

A Theoretical Study on the Two Geometric Isomers in the [Co(bamp)(aep)Cl]2+ System

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【作者】 温祖标刘超鲁顺保郭辉瑞

【Author】 WEN Zu-biao1,LIU Chao2,LU Shun-bao1,GUO Hui-rui2(1.College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang 330022,China;2.College of Gemmology and Material Technics,Shijiazhuang University of Economics,Shijiazhuang 050031,China;3.Institute of Coordination Catalysis,Yichun University,Yichun 336000,China)

【机构】 江西师范大学化学化工学院石家庄经济学院宝石与材料工艺学院宜春学院配位催化研究所

【摘要】 用量子化学从头计算方法,在赝势基组RHF/LANL2DZ的水平上对[Co(bamp)(aep)Cl]2+[bamp=2,6-(二氨甲基)吡啶,aep=2-(氨乙基)吡啶]体系的2个可能的几何异构体进行了结构优化,对其异构体的键长、键角、基态能量进行了计算,并比较了2个几何异构体的变形性和基态能量,发现2个异构体m1,m2的变形性相差较小,但异构体m1比异构体m2的基态能量更低,这可能是异构体m1存在C—H…π结构所致.

【Abstract】 The computational results for the two geometric isomers in the [Co(bamp)(aep)Cl]2+ system have been obtained by using an ab initio at RHF/LANL2DZ level(bamp=2,6-aminomethylpyridine,aep=2-aminoethylpyridine).A comparison of angle deviation and total energy of them shows that the angle deviations of two isomers m1and m2 are very small,but energy of isomer m1 is lower than that of isomer m2.It is interpreted as consequences of the C—H…π interaction in the isomer m1.

【基金】 国家自然科学基金资助项目(200261002);贵州省自然科学基金资助项目(003060)
  • 【文献出处】 复旦学报(自然科学版) ,Journal of Fudan University(Natural Science) , 编辑部邮箱 ,2009年01期
  • 【分类号】O627.8
  • 【下载频次】65
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