THE PHENOMENON OF CONGLOMERATE CRYSTALLIZATION .34. CRYSTAL-STRUCTURES OF THE CONGLOMERATE (-)(599)-K[CIS-ALPHA-LAMBDA(DELTA-LAMBDA-DELTA)-CO(EDDA)(NO2)2] AND OF THE RACEMATE K[CIS-ALPHA-LAMBDA(DELTA-LAMBDA-DELTA)-CO-(EDDA)(NO2)2].H2O (EDDA = ETHYLENEDIAMINE-N,N'-DIACETATE)

被引：24

作者：

BERNAL, I ^{[1
]}

CETRULLO, J ^{[1
]}

MYRCZEK, J ^{[1
]}

CAI, JW ^{[1
]}

JORDAN, WT ^{[1
]}

机构：

[1] PACIFIC UNIV,DEPT CHEM,FOREST GROVE,OR 97116

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1993年 / 11期

关键词：

D O I：

10.1039/dt9930001771

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A racemic solution of K[cis-alpha-Co(edda)(NO2)2] 1 (edda = ethylenediamine-N,N'-diacetate) was found to crystallize as a conglomerate in the enantiomorphic, orthorhombic space group P2(1)2(1)2(1). An acidified solution of it produced racemic crystals of K[cis-alpha-Co(edda)(NO2)2].H2O 2, space group P1BAR, as well as conglomerate crystals of 1. Their crystal structures and the absolute configuration of 1 were determined. In both species the anions form infinite strings which are linked to one another by the potassium cations (and/or waters, where relevant, 2). With 1 the helical strings are homochiral, while with 2 pairs of spiral strings have opposite helical chirality, as expected from the fact that they are related to one another by an inversion centre.

引用

页码：1771 / 1776

页数：6

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