Synthesis, crystal structure and NMR of [Na(DB18C6)(CH3CN)]3[α-PW12O40]

被引：14

作者：

Lu, XM ^{[1
]}

Liu, B

Sarula

Wang, J

Ye, CH

机构：

[1] Capital Normal Univ, Dept Chem, Beijing 100037, Peoples R China

[2] SINOPEC, Res Inst Petr Proc, Beijing 100083, Peoples R China

[3] Wuhan Inst Phys, Wuhan 430071, Peoples R China

来源：

POLYHEDRON | 2005年 / 24卷 / 16-17期

关键词：

crown ether; polytungatate; NMR; crystal structure;

D O I：

10.1016/j.poly.2005.03.019

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A novel super-molecular complex [Na(DB18C6)(CH3CN)](3) [alpha-PW12O40] was obtained by solvothernial reaction and characterized by IR, X-ray, H-1, C-13 and P-31 NMR. The result reveals that the complex consists of all [alpha-PW12O40](3-) anion with alpha-Keggin structure and three complex [Na(DB18C6)(CH3OH)](+) cations in which every sodium ion located in the cavity of dibelizo-18-crown-6 with six Na-O bonds and coordinated with one of the terminal O atom of [alpha-PW12O40](3-) and the N atom of CH3CN from two sides of the distorted DB18C6 plane, respectively. The three terminal 0 atoms linked with sodium ion are from a single W3O3 triplet of the alpha-Keggin tungstophosphate anion. The C-13 resonance (119.27 ppm) bonded to N atom in CH3CN has been clarified by gUMBC spectrum (see Fig. 1), which is too weak to be observed in 13 C NMR spectrum due to its too low relaxation rate. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2889 / 2893

页数：5

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