基于八钼酸盐的新型超分子化合物的合成、结构及性能研究

Synthesis,structure and properties of a new supramolecular compound based on octamolybdate

通过水热法合成了一种基于[Mo_(8)O_(26)]^(4-)的三维超分子化合物:K[Mo_(8)O_(26)]_(2)(Hbpy)_(7)(bpy)_(3)(H_(2)O)_(2)(1).利用单晶X-射线衍射、元素分析、红外光谱及热重对化合物1的结构进行了表征.单晶结构分析表明,在化合物1中,K^(+)将[Mo_(8)O_(26)]^(4-)连接形成一维链结构,通过超分子作用力,一维链与4,4'-联吡啶(bpy)连接形成三维超分子结构.对化合物1进行了光催化降解有机染料性能的测试,发现化合物1对罗丹明B具有显著的光催化降解活性,循环伏安测试表明化合物1存在两步氧化还原过程.

A 3-D supramolecular compound based on[Mo_(8)O_(26)]^(4-),namely,K[Mo_(8)O_(26)]_(2)(Hbpy)_(7)(bpy)_(3)(H2O)_(2)(1),has been synthesized under hydrothermal conditions.1 has been identified by single crystal X-ray diffraction,elemental analysis,FT-IR and thermogravimetric analysis.In compound 1,K^(+)atoms connect[Mo_(8)O_(26)]^(4-)to form a 1-D chain structure.1-D chains are further linked into a 3-D supramolecular structure by 4,4'-bipyridine(bpy)through supramolecular interactions.The photocatalytic properties of compound 1 was studied,which has good photocatalytic degradation performance for RhB.Furthermore,cyclic voltammetry test results show that compound 1 has a two-step oxidation-reduction process.