异核配合物K_2[Co(Dipc)_2]·7H_2O的合成、性质、结构和热分解动力学研究(英文)  

Synthesis, Characterization, Structure and Kinetics of Thermal Decomposition of K_2[Co(Dipc)_2]· 7H_2O

作　　者：张淑华[1] 蒋毅民[2] 肖瑜[3] 

机构地区：[1]桂林工学院材料与化学工程系,桂林541004 [2]广西师范大学化学化工学院,桂林541004 [3]桂林工学院资源与环境工程系,桂林541004

出　　处：《无机化学学报》2003年第12期1339-1342,共4页Chinese Journal of Inorganic Chemistry

基　　金：广西科学基金(No.0339034);广西高校科研基金资助项目。

摘　　要：A heteronuclear compound, K2· 7H2O (Dipc=pyridine 2,6 dicarboxylic acid) has been synthe sized and characterized by IR, elemental analysis, and X ray diffraction. Crystal data: orthorhombic system with space group Pnna and unite cell parameters: a=2.0645(3)nm, b=1.3484(2)nm, c=0.8204(1)nm; V=2.2838(6)nm3, Z=4, Dcald=1.726 g· cm- 3, μ =1.193 mm- 1, F(000)=1212, Gof=1.045, Δ ρ =339～ - 348 e· nm- 3, the final R is 0.0295. In the molecule of the complex, Co? ion is six coordinate to form a distorted octahedron. The N atom and the carboxyl group of pyridine 2,6 dicarboxylic acid are coordinated with the central ions. One of the carboxyl groups of the pyridine 2,6 dicarboxylic acid connect K? and Co? . The com pound possesses approximate C2 symmetry. The compounds form a three dimensional network of infinite length connection with crystal waters, potassium ions and hydrogen bonds. The result of kinetics of thermal decomposition indicated that the compound decomposition takes place in two steps. CCDC: 207078.A heteronuclear compound, K2· 7H2O (Dipc=pyridine 2,6 dicarboxylic acid) has been synthe sized and characterized by IR, elemental analysis, and X ray diffraction. Crystal data: orthorhombic system with space group Pnna and unite cell parameters: a=2.0645(3)nm, b=1.3484(2)nm, c=0.8204(1)nm; V=2.2838(6)nm3, Z=4, Dcald=1.726 g· cm- 3, μ =1.193 mm- 1, F(000)=1212, Gof=1.045, Δ ρ =339～ - 348 e· nm- 3, the final R is 0.0295. In the molecule of the complex, Co? ion is six coordinate to form a distorted octahedron. The N atom and the carboxyl group of pyridine 2,6 dicarboxylic acid are coordinated with the central ions. One of the carboxyl groups of the pyridine 2,6 dicarboxylic acid connect K? and Co? . The com pound possesses approximate C2 symmetry. The compounds form a three dimensional network of infinite length connection with crystal waters, potassium ions and hydrogen bonds. The result of kinetics of thermal decomposition indicated that the compound decomposition takes place in two steps. CCDC: 207078.

关 键 词：异核配合物 K2[Co(Dipc)2]·7H2O 合成 性质 晶体结构 热分解动力学 吡啶-2 6-二甲酸 钴配合物 钾配合物 

分 类 号：O614.812[理学—无机化学] O614.113[理学—化学]