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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 nm, b = 1.3484 nm, c = 0.8204 nm, V = 2.2838 nm, Z = 4, Dcald = 1.726 g · cm -3 and μ = 1.193 mm -1, F (000) = 1212, Gof = 1.045, Δρ = 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. N atom and the carboxyl group of pyridine 2,6 dicarboxylic acid are coordinated with the central ions. One of the carboxyl groups in 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 indicates that the compound d ecomposition takes place in two steps. CCDC: 207078.