【作者】 朱立红； 徐芳； 孙秋香； 祝心德；

【Author】 Zhu Li-hong Xu Fang Sun Qiu-xiang Zhu Xin-de(Department of Chemistry, Huanggang Normal College, Huangzhou, Hubei, 438000)(Department of Chemistry, Hua Zhong Normal University, Wuhan, Hubei ,430079)

【机构】 黄冈师范学院化学系； 华中师范大学化学系；

【摘要】 用微型实验方法合成了镧(Ⅲ)配合物LaL3·8H2O(L=对氨基苯磺酸阴离子)。测定了该配合物的晶体结构。该晶体属正交晶系,Pbca空间群,晶胞参数:a=7.993(4)b=23.710(10)c=32.089(13)A V=6081(5)A3 Z=8 F(000)=3232 RF0.0387.金属镧离子的配位数为九,该离子同时与两个对氨基苯磺酸中磺基上的氧原子配位和七个水分子中的氧配位,一分子的水作为晶格水存在,与配合物中的磺基和氨基形成复杂的三维氢键网,使结构进一步稳定。更多还原

【Abstract】 The complex LaL3-8H2O (L= 4-amino-benzenesulfonate) has been synthesized by Microscale Chemical Experiment. The crystal structure of lanthanum 4-amino-benzenesulfonate complex has been determined by X-ray diffraction. The crystal data indicate that the lanthanum atom is coordinated to two oxygen atoms from two-SO3-groups and seven oxygen atoms from water molecules, thus the coordination number of lanthanum atom is nine, another water molecule exists as lattice water, the other 4-aminobenzenesulfonic acid molecule is not bonded to the lanthanum atom, but forms H-bonding with water molecules. There is complicated hydrogen bonding network between -SO3-groups.water molecules and -NH2 group in the complex, it can be seen that complicated hydrogen bonding play an important role in the construction of three-dimensional molecular architecture.更多还原