THE PREPARATION AND CRYSTAL-STRUCTURE OF POLYMERIC ANHYDROUS SODIUM HYDROGEN O-PHENYLENEDIOXYDIACETATE

被引：4

作者：

BOTT, RC

SAGATYS, DS

LYNCH, DE

SMITH, G

KENNARD, CHL

机构：

[1] QUEENSLAND UNIV TECHNOL,SCH CHEM,GPO BOX 2434,BRISBANE,QLD 4001,AUSTRALIA

[2] UNIV QUEENSLAND,DEPT CHEM,BRISBANE,QLD 4072,AUSTRALIA

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 1992年 / 45卷 / 05期

关键词：

D O I：

10.1071/CH9920947

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The crystal structure of anhydrous sodium hydrogen o-phenylenedioxydiacetate, [Na2(Hbdda)2]n, has been determined by X-ray methods and refined to a residual R 0.031 for 1234 observed reflections. Crystals are monoclinic, space group C2/c with Z 4 in a cell of dimensions a 18.415(6), b 7.4667(7), c 16.354(70 angstrom, beta-112.61(2)-degrees. The dimeric repeating unit has two centrosymmetrically related pentagonal pyramidal Na-O6 complex centres [Na-O, 2.272-2.439(2) angstrom] bridged by carboxylate oxygens. The pentagonal plane comprises four oxygens from the Hbdda ligand as well as one providing the bridging link. The axial bond gives the step-polymer link while the carboxylic acid proton is hydrogen bonded to a carboxylate oxygen of the inversion-related Hbdda ligand [O ... O, 2.469(2) angstrom].

引用

页码：947 / 952

页数：6

共 11 条

[1]

[Anonymous], 1986, SHELXS86 PROGRAM SOL

[2]

BOTT RC, 1991, POLYHEDRON, V10, P1565

[3] COORDINATION-COMPLEXES OF GROUP-1 AND GROUP-2 - POTASSIUM O,O'-CATECHOLDIACETATE [J].