Structures and crystallization behavior of cis-α-[Co(trien) (NO2)2]•ClO4 (I), cis-β-[Co(trien) (NO2)2]Br•2H2O (II), and cis-β-[Co(trien) (NO2)2]•ClO3 (III)

被引：2

作者：

Hu, XP

Cai, JW ^{[1
]}

Feng, XL

Ji, LN

机构：

[1] Zhongshan Univ, Sch Chem & Chem Engn, Canton 510275, Peoples R China

[2] Zhongshan Univ, Instrumentat Anal & Res Ctr, Canton 510275, Peoples R China

来源：

JOURNAL OF CHEMICAL CRYSTALLOGRAPHY | 2000年 / 30卷 / 01期

基金：

中国国家自然科学基金;

关键词：

conglomerate crystallization; Co(III) coordination compounds; counterion effects;

D O I：

10.1023/A:1009589814764

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Structures, conformations, and crystallization behavior of compounds cis-alpha-[Co(trien) (NO2)(2)]. ClO4 (I), cis-beta-[Co(trien) (NO2)(2)]Br . 2H(2)O (II), and cis-beta-[Co(trien)(NO2)(2)] . ClO3 (III) are reported. Compound (I) crystallized in space group Pbca, with a = 12.3323(9), b = 13.0265(9) and c = 18.1597(13) Angstrom; compound (II) crystallized in space group Pca2(1), with a = 8.1844(7), b = 14.7011(14) and c = 12.4875(12) Angstrom, while compound (III) also crystallized in space group Pca2(1), with a = 12.4897(8), b = 8.8499(6) and c = 12.6500(8) Angstrom. In all three cases, the Co(III) ions were six-coordinated with nitrogens from trien and two nitrates. Inter- and intramolecular hydrogen bonding interactions are discussed to explain the conglomerate versus racemate crystallization behavior adopted by these three compounds, with comparison of their known analogue compounds of cis-alpha/beta-[Co(trien) (NO2)(2)]X, where X = halide and NO3-. For the cis-beta-[Co(trien)(NO2)(2)](+) cation, the conformation of the cation itself determines the intramolecular hydrogen bonding pattern, and the interaction of counteranions can be ignored, while in cis-alpha-[Co(trien)(NO2)(2)] . ClO4, the perchlorate interrupts the intramolecular hydrogen bonding pattern observed in the halide analog.

引用

页码：27 / 34

页数：8

共 19 条

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Xiaopeng Hu
Jiwen Cai
Xiaolong Feng
Liangnian Ji
Journal of Chemical Crystallography, 2000, 30 : 27 - 34
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