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以AgNO3、K12.5Na1.5[Na P5W30O110]·15H2O及柔性配体1,1′-双(3,5-二甲基-1H-吡唑)甲烷(H2bdpm)为原料,利用水热合成方法合成了1个新的基于单核银为中心的Preyssler多酸阴离子的有机-无机杂化化合物:[Ag13(H2bdpm)8(H2O)5(HAg P5W30O110)]·2H2O(1),并通过元素分析、红外光谱、热重分析和X-射线单晶衍射等分析手段对化合物1进行了表征.X-射线单晶结构分析表明,该化合物属于三斜晶系,P1空间群,晶胞参数:a=19.135(5),b=20.313(5),c=28.400(5),Z=2,R1=0.0550,w R2=0.1542.化合物1包含罕见的以单核银为中心的Preyssler型多酸阴离子,该阴离子通过金属银连接形成二维无机层.相连的二维层之间通过多种Ag-H2bdpm金属有机亚单元进一步连接形成三维框架.该化合物最大的结构特点在于Preyssler型多酸阴离子的高连接(十八连接)以及Ag(I)离子多样的配位模式.
Using AgNO3, K12.5Na1.5 [Na P5W30O110] · 15H2O and flexible ligand 1,1’-bis (3,5-dimethyl-1H-pyrazolyl) methane (H2bdpm) as raw materials, A new organic-inorganic hybrid compound based on a mononuclear silver-centered Preyssler polyacid anion was synthesized: [Ag13 (H2bdpm) 8 (H2O) 5 (HAg P5W30O110)] · 2H2O (1) , IR, TG and X-ray single crystal diffraction were used to characterize compound 1. Structural analysis of X-ray single crystal showed that the compound belongs to triclinic system with P1 space group and unit cell parameters: a = 19.135 (5) , b = 20.313 5, c = 28.400 5, Z = 2, R1 = 0.0550, w R2 = 0.1542 Compound 1 contains a rare Preyssler type Polyanion anion, the anion through the metal silver to form a two-dimensional inorganic layer between the two-dimensional layer connected by a variety of Ag-H2bdpm metal organic subunits further linked to form a three-dimensional framework.The largest structural features of this compound is Preyssler type polyacid Anions are highly linked (18-linked) and Ag (I) ions are diversely coordinated.