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	新型十八核聚氧钼酸盐的合成与结构; Synthesis and structure of a novel 18-Mo polyoxomolybdate
	刘广 ; 章士伟
	2002
关键词	钼 聚氧钼酸盐 环状结构 链状结构 晶体结构 molybdenum polyoxomolybdate girdle-like structure chain-like structure crystal structure
英文摘要	合成了新化合物(NH4)6·犤Ca2(H2O)6(CH3COO)2犦·狖Ca@犤MoⅥ10MoⅤ8O52(OH)4(CH3COO)2犦狚·14H2O,并运用元素分析和单晶X衍射对其结构进行了表征.测定结果证实,该化合物由十八个钼氧八面体相互连接而成,呈现一种有趣的环状结构.在环的中心有一个Ca2+离子,它通过与环上的四个酰氧配位而与环骨架相连.有十个钼原子呈正六价,而其余八个钼原子呈正五价,且有Mo-Mo键存在.环上还有配位相连的四个乙酸配体.在环的上下各有两个Ca2+离子,它通过与该环和其它环上的氧原子配位而把环连成一维链状结构.晶体属三斜晶系,空间群P1,晶胞参数:a=1.0552(2)n...; A new compound (NH4)(6) (.) [Ca-2(H2O)(6)(CH3COO)(2)] (.) (Ca@ [(Mo10Mo8O52)-Mo-IV-O-V(OH)(4)(CH3COO)(2)]} (.) 14H(2)Owas prepared and the structure was determined by X-ray diffraction analysis. The compound shows an interesting girdle-like structure that is composed of eighteen Mo - O octahedra. There is a Ca2+ cation in the center of the girdle, which connects to the girdle backbone by bonding to four oxygen atoms of the girdle. The valences of ten Mo atoms are + 6 while those of the other eight Mo atoms are + 5, between which Mo - Mo bonds are found. Four acetic ligands connect to the girdle. The girdles link into ID chains by the Ca2+ cations above and below the girdle bonding to the backbone oxygen atoms. This compound is triclinic, space group P1, a = 1.0552(2)mn, b = 1.5150(3)nm, c = 1.5449(3)nm, alpha = 60.84(3), beta = 88.00(3), gamma = 71.21(3)degrees, V = 2.0194(7)nm, R-1 = 0.0366and wR(2) = 0.083.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000177048000011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 1; 07; 624-628; 18
语种	中文
出处	SCI ; 万方 ; 知网
出版者	物理化学学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/78298]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	刘广,章士伟. 新型十八核聚氧钼酸盐的合成与结构, Synthesis and structure of a novel 18-Mo polyoxomolybdate. 2002-01-01.

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