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.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
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。
