摘要
用中温水热技术合成了(4,4′-bipyH)3[PW12O40](4,4′-bipy).7 H2O,用元素分析、X射线单晶衍射、IR、UV-vis和TG-DTA对其进行了表征.结果表明,化合物的晶体属单斜晶系,P2(1)/c空间群.标题化合物是由3个质子化的4,4′-bipy分子、一个Keggin结构的钨磷杂多阴离子[PW12O40]3-和一个4,4′-bipy分子及7个结晶水分子所组成.钨磷杂多阴离子与质子化的联吡啶及结晶水分子之间通过氢键作用,连接成无限二维层状结构,形成超分子化合物.
The supramolecular compound, （4,4＇-bipyH）3 [PW12O40] （4,4＇-bipy） · 7H2O, has been synthesized by hydrothermal method and characterized by elemental analysis, IR, UV-vis, TG -DTA and single crystal X ray diffraction structural analysis. The crystal belongs to rnonoclinic system with a space group P2 （1）/c. The title compound is composed of [PW12O40]^3- heteropolyanion, four 4,4＇-bipy molecules and seven lattice water molecules. The heteropolyanion, protonated 4,4＇-bipy and lattice water molecules are connected to a supramolecular compound by hydrogen bonds. The heteropolyanions are connected to an infinte layered structure with the protonated 4,4＇-bipy.
出处
《分子科学学报》
CAS
CSCD
2006年第6期367-371,共5页
Journal of Molecular Science
基金
国家自然科学基金资助项目(29671011
29971010)
湖北省自然科学基金资助项目(96J035
99J066).
关键词
多金属氧酸盐
水热合成
晶体结构
热稳定性
polyoxometalate
hydrothermal synthesis
crystal structure
thermal stability
