THE PREPARATION AND CRYSTAL-STRUCTURE OF AMMONIUM BIS[CITRATO(3-)]CUPRATE(II)

被引:34
作者
BOTT, RC
SAGATYS, DS
LYNCH, DE
SMITH, G
KENNARD, CHL
MAK, TCW
机构
[1] QUEENSLAND UNIV TECHNOL,SCH CHEM,GPO BOX 2434,BRISBANE,QLD 4001,AUSTRALIA
[2] UNIV QUEENSLAND,DEPT CHEM,BRISBANE,QLD 4072,AUSTRALIA
[3] CHINESE UNIV HONG KONG,DEPT CHEM,SHA TIN,HONG KONG
关键词
D O I
10.1071/CH9911495
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The copper(II) complex with citric acid (NH4)4 [Cu(C6H5O7)2] has been prepared, and its structure determined by X-ray diffraction, giving a residual R 0.035 for 1208 observed reflections. Crystals are monoclinic, space group P2(1)/c with Z 2 in a cell of dimensions a 8.755(3), b 13.185(4), c 9.364(2)angstrom, beta 113-73(2)-degrees. The complex is a centrosymmetric six-coordinate monomer which is isomorphous with ammonium zinc(II) citrate. However, the Cu-O(hydroxyl) bonds [2 . 341(3) angstrom] show jahn-Teller distortion relative to the Cu-O(carboxyl) bonds [1 . 969(3) and 1 . 977(3) angstrom].
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页码:1495 / 1498
页数:4
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