Solution behavior of Hg(II)-cystamine by Uv-Vis and 199Hg NMR

被引：9

作者：

Bharara, Mohan S. ^{[1
]}

Parkin, Sean ^{[1
]}

Atwood, David A. ^{[1
]}

机构：

[1] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

来源：

MAIN GROUP CHEMISTRY | 2005年 / 4卷 / 03期

基金：

美国国家科学基金会;

关键词：

HgCl2; Cystamine; Disulfide; Hg-199; NMR; Uv-Vis;

D O I：

10.1080/10241220600595450

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The combination of HgCl2 with the disulfide salt of 2-aminoethanethiol (cystamine dihydrogen dichloride) in water yields a two-dimensional chain {[HgCl4][(NH3CH2CH2S-)(2)]}(n) (1). It consists of six-coordinate Hg in [HgCl4](n) units with bridging and termainal Cl atoms. The disulfide groups, (NH3CH2CH2S-)(2) are held between the [HgCl4] n chain with weak S-S interactions. The chlorides in the [HgCl4] n units are involved in intermolecular hydrogen bonding to yield a three-dimensional network. A similar reaction with the reduced form of cystamine (2-amino ethanethiol) yields a linear Hg(II)-bis-thiolate, [Hg(SCH2CH2NH3](2+) (2). When compound 1 is combined with two equivalents of NaOH it rearranges to 2 as indicated by Hg-199 NMR and Uv-Vis.

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页码：217 / 225

页数：9

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