[(Mo_2O_6)(pyrazine)]的水热合成、晶体结构和热性能研究(英文)

Hydrothermal Synthesis,Crystal Structure and Thermal Property of [(Mo_2O_6)(pyrazine)]

用吡嗪-2,3-二羧酸、CoCl2.6H2O、MoO3和去离子水在413K下通过水热反应法得到了标题化合物[(Mo2O6)(pz)],该化合物晶体属于正交晶系,空间群为Pbca,晶胞参数为a=0.757 78(15) nm,b=0.740 57(15) nm,c=1.411 2(3) nm,Z=4.单晶衍射数据表明标题化合物由二齿桥联配体吡嗪将二维网状[Mo2O6]n连接成具有三维网络结构的无机-有机杂化化合物,其中每个Mo原子以变型八面体构型和5个氧原子以及1个氮原子配位.标题化合物在300℃之前热性能稳定.

The title compound, [ （Mo2O6） （pz） ] （ pz = pyrazine）, was hydrothermally synthesized by the reaction of pyrazine-2, 3-dicarboxylic acid, CoCl2·6H2O, MoO3 and deionized water at 413K. This coordination compound crystallized in orthorhombic, space group Pbca with α =0.757 78（15） nm, b = 0.740 57（15） nm, c = 1.411 2（3） nm, and Z =4. As characterized by single crystal X-ray diffraction, the 2-D inorganic molybdenum oxide layers were interlinked by bidenate organic pyrazine lig- and into 3-D inorganic-organic hybrid material, in which each Mo^Ⅵ is coordinated by five oxygen atoms and one nitrogen atom in a distorted octahedral geometry. The result given by thermogravimetric analysis revealed that the title compound was thermally stable up to 300 ℃.