[C_(10)N_2H_(10)]_2[H_2P_2Mo_5O_(23)]·2H_2O的合成、结构及电化学性质  

Synthesis,crystal structure and electrochemistry properties of [C_(10)N_2H_(10)]_2[H_2P_2Mo_5O_(23)]·2H_2O

作　　者：祁晓婷[1] 朱文华[1] 蔡李鹏[1] 王娟[1] 魏振[1] 

机构地区：[1]湖北大学化学化工学院,湖北武汉430062

出　　处：《湖北大学学报（自然科学版）》2013年第1期93-97,共5页Journal of Hubei University：Natural Science

基　　金：国家自然科学基金(21201061);国防科技应用基础研究(A0120060595-06);湖北省自然科学基金(2012FFB00205)资助

摘　　要：水热法合成一种新化合物[C10N2H10]2[H2P2Mo5O23].2H2O,并通过红外光谱、元素分析、X线单晶衍射分析和电化学分析等手段进行表征.晶体数据结果表明,晶体属于三斜晶系,P-1空间群,晶胞参数分别为a=0.995 15(11)nm,b=1.123 67(13)nm,c=1.758 1(2)nm,α=73.454(1)°,β=84.036(1)°,γ=68.002(1)°,V=1.747 3(3)nm3;Z=2;最后的一致性因子R1=0.030 5,wR2=0.077 3.标题化合物由两个质子化的4,4′-联吡啶和一个杂多阴离子[H2P2Mo5O23]4-组成.循环伏安法显示该化合物具有可逆的氧化还原性能,电子转移数为1,相关电对为Mo(Ⅵ)/Mo(Ⅴ).A new compound [C10N2H10]2[H2P2Mo5O23]·2H2O, containing the heteropolyanion, EH2 P2 Mos 023 ]4-, together with diprotonated 4,4＇-bipyridine, had been synthesized by hydrothermal method and characterized by crystal ）（-ray structure analysis, IR spectrum and CV. The results of X- ray single crystal diffraction was shown that the compound crystallized in space group P-1 of triclinic system with a=0. 995 15 （11） nm, b=l. 123 67 （13） nm, c=1. 758 1（2） nm, a=73. 454（1）°, β= 84.036（1）°,γ=68. 002（1）°, V=1. 747 3（3） nm3; Z=2; RI=0. 030 5, wR2=0. 077 3. The heteropolyanion was built up from five MoO6 distorted octahedral sharing four common edges and one common corner, capped by two PO4 distortion tetrahedron. Cyclic voltammetric measurement of the compound revealed that the molybdenum was reduced irreversibly. The electron transfer number （n） involved in reduction processes could be calculated to be approximately 1, which corresponded to the Mo（VI） / Mo（V）couple.

关 键 词：杂多阴离子 钼 水热合成 晶体结构 电化学 

分 类 号：O614[理学—无机化学]