Structureof〔Na（DB18C6）（CH3OH）〕2W6O19·（DB18C6）·（CH3OH）

被引：0
作者：
LU XiaoMing
CHU YiMing
DI Jing
LIU ShunChengDepartment of Chemistry Capital Normal University Beijing China [100037 ]
机构：
来源：
结构化学 | 1997年 / 03期
关键词：
dibenzo-18-crown-6 (DB18C6); polyoxotungstate anion; crystal structure;
D O I：
10.14102/j.cnki.0254-5861.1997.03.002
中图分类号：
O641 [结构化学];
学科分类号：
070304 ; 081704 ;
摘要：
Complex [（DB18C6 ） （CH3OH ）]2W6O19. （DB18C6 ） - （CH3OH）,Mr=2630. 43, monoclinic, space group P21/c, a=18. 699 （5）, b= 19. 568 （4）, c=22. 785（5） A, β= 112. 91（2）°, V=7679（7） A, Z=4, D.=2- 275 g/cm3, F（000）= 4992, p= 92. 52 cm-1. The final R=0. 035 and Rw =0. 041 for 5689 observed reflections (I>3σ（I） ). The complex contains one hexatungstate anion and two sodiumcations. Each Na cation is inlaid in the cavity of one dibenzo-18-crown-6 （DB18C6）with six Na-O coordination bonds. In addition, it linked to O atom of CH3OH fromone side of DB18C6 and bonded to one of the terminal O atoms in hexatungstate anionfrom the other side. The two DB18C6 connected with hexatungstate symmetrically bythe long-distance interaction through the O- Na -O bonds with Na- O distances of2. 28（1）2- 37（1 ） A W-O distances are 1. 68（2） 2. 34（2） A. C-O distancesin methanol coordinated with cation are 1. 38 （4 ） ~ 1- 41 （4） A.
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页码：172 / 176
页数：5
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