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

Mohan S. Bharara; Sean Parkin; David A. Atwood

doi:10.1080/10241220600595450

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

Mohan S. Bharara, Sean Parkin, David A. Atwood

Chemistry

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

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 ¹⁹⁹Hg NMR and Uv-Vis.

Original language	English
Pages (from-to)	217-225
Number of pages	9
Journal	Main Group Chemistry
Volume	4
Issue number	3
DOIs	https://doi.org/10.1080/10241220600595450
State	Published - 2005

Keywords

Cystamine
Disulfide
Hg NMR
HgCl
Uv-Vis

ASJC Scopus subject areas

Organic Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1080/10241220600595450

Cite this

@article{2ed3fc57981e4f0fbdd3f83ef194c4f9,

title = "Solution behavior of Hg(II)-cystamine by Uv-Vis and 199Hg NMR",

abstract = "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 199Hg NMR and Uv-Vis.",

keywords = "Cystamine, Disulfide, Hg NMR, HgCl, Uv-Vis",

author = "Bharara, {Mohan S.} and Sean Parkin and Atwood, {David A.}",

year = "2005",

doi = "10.1080/10241220600595450",

language = "English",

volume = "4",

pages = "217--225",

number = "3",

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TY - JOUR

T1 - Solution behavior of Hg(II)-cystamine by Uv-Vis and 199Hg NMR

AU - Bharara, Mohan S.

AU - Parkin, Sean

AU - Atwood, David A.

PY - 2005

Y1 - 2005

N2 - 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 199Hg NMR and Uv-Vis.

AB - 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 199Hg NMR and Uv-Vis.

KW - Cystamine

KW - Disulfide

KW - Hg NMR

KW - HgCl

KW - Uv-Vis

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JF - Main Group Chemistry

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