超分子化合物[Co(HL)(2,2′-bipy)_2]·9·5H_2O的合成、晶体结构和热性质  

Synthesis, Crystal Structure and Thermal Property of Supramolecular Compound [Co(HL)( 2,2′-bipy)_2]·9·5H_2O

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作  者:王永伟[1] 王新德[2] 王利亚[3] 

机构地区:[1]河南科技大学化工与制药学院,河南洛阳471039 [2]黎明化工研究院,河南洛阳471000 [3]洛阳师范学院,河南洛阳471022

出  处:《化学推进剂与高分子材料》2009年第2期37-40,共4页Chemical Propellants & Polymeric Materials

摘  要:合成了超分子化合物[Co(HL)(2,2′-bipy)2]·9·5H2O(H3L=对羧基苯磺酰甘氨酸,2,2′-bipy=2,2′-联吡啶),并通过单晶X射线衍射确定了晶体结构,晶体结构分析表明化合物C29H42CoN5O15.5S属单斜晶系,C2/c空间群。Co(Ⅱ)离子为6配位的八面体结构,对羧基苯磺酰甘氨酸作为双齿配体与Co(Ⅱ)离子配位,2,2′-联吡啶和Co(Ⅱ)离子双齿螯合配位。配合物通过氢键和π-π堆积作用形成三维结构,配合物中含有一个由18个水分子组成的独立水簇。在氮气气氛中对该化合物进行了热重分析,结果表明:该化合物在30.1℃时开始失重,440℃时分解完全。The novel supramolecule compound [Co(HL)(2,2'bipy)2]·9.5H2O(H3L=N-p-carboxybenzenesulfonyl.glycine acid, bipy=bipyridine) was synthesized. Its crystal structure was determined by single-crystal X-ray diffraction. The results show that the compound belongs to monoclinic system, space group C2/c. The Co(Ⅱ ) ion is six-coordinated to form an octahedral geometry, the N-p- carboxybenzenesulfonyl-glycine acid acts as a chelating ligand and 2,2'-bipy behaves as a bidentate chelating ligand to coordinate to Co ( Ⅱ ) ion. The complex is further assembled by intermolecular hydrogen bonds and π - π interactions into a 3-D supramolecular network. The complex also contains a discrete water cluster which consists of 18 water molecules. The thermogravimetric analysis under nitrogen atmosphere shows this compound begins weightlessness at 30.1 ℃ and decomposing completely at 440℃.

关 键 词:对羧基苯磺酰甘氨酸 晶体结构 热重分析 水簇 

分 类 号:O641.4[理学—物理化学]

 

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