论文部分内容阅读
Reactions of (NH4)2MS4, AgBr and CuBr in r-methylpyridine produced one new compound, [MS4Cu4(r-MePy)8]M6O19] (1, M = W; 2, M = Mo), of which 1 was characterized by single crystal X-ray analysis. The crystal data: orthorhombic, Pbcn, a = 15.434(4),b= 16.732(2), c = 28.657(7) A, V = 7400.8(8) A3, Z = 4, R = 0.072 for 3121 independent data. The compound is the first example which contains both polyoxotnngstate anion and heteropolynuclear cluster cation. In the structure of the cation four edges of the tetrahedral WS42- core are coordinated by four copper atoms, giving a WS4Cu4 aggregate of approximate D2h symmetry. The differences between the reaction of Cu+ with MS42- and that of Ag+ with MS42- in pyridine and its derivatives are discussed.
Reactions of (NH4) 2MS4, AgBr and CuBr in r-methylpyridine produced one new compound, [MS4Cu4 (r-MePy) 8] M6O19] (1, M = W; The crystal data: orthorhombic, Pbcn, a = 15.434 (4), b = 16.732 (2), c = 28.657 (7) A, V = 7400.8 (8) A3, Z = 4, R = 0.072 for 3121 independent data. The compound is the first example which contains both polyoxotnngstate anion and heteropolynuclear cluster cation. In the structure of the cation four edges of the tetrahedral WS42-core are coordinated by four copper atoms, giving a WS4Cu4 aggregate of approximate D2h symmetry. The differences between the reaction of Cu + with MS42- and that of Ag + with MS42- in pyridine and its derivatives are discussed.