Carbon-13 nuclear magnetic resonance studies of the redox reactions of aurothiomalates with selenocyanate in aqueous solution

Anvarhusein A. Isab; M. Naseem Akhtar; Abdul Rahman Al-Arfaj

doi:10.1039/DT9950001483

Carbon-13 nuclear magnetic resonance studies of the redox reactions of aurothiomalates with selenocyanate in aqueous solution

Anvarhusein A. Isab^*
, M. Naseem Akhtar
, Abdul Rahman Al-Arfaj

^*Corresponding author for this work

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

14 Scopus citations

Abstract

The interactions of SCN^- and SeCN^- with aurothiomalate [Au(tm)]_n in aqueous solution were studied by ¹³C NMR spectroscopy. The [Au(tm)]_n is further polymerized in the presence of SCN^-, however, SeCN^- binds to [Au(tm)]_n forming monomeric [Au(SeCN)(tm)]^-. This complex initially disproportionates to give [Au(SeCN)₂]^- and [Au(tm)₂]^-. The [Au(SeCN)₂]^- eventually decomposed to give [Au(CN)₂]^- and metallic selenium. The free tm^- released from [Au(tm)]_n is oxidized to the thiomalic disulfide (tm)₂. When the bis complex [Au(tm)₂]^- reacted with SeCN^- it did not form [Au(SeCN)(tm)]^-, but instead gave (tm)₂, [Au(CN)₂]^- and Se₂^2-.

Original language	English
Pages (from-to)	1483-1487
Number of pages	5
Journal	Journal of the Chemical Society, Dalton Transactions
Issue number	9
DOIs	https://doi.org/10.1039/DT9950001483
State	Published - 1995

ASJC Scopus subject areas

General Chemistry

Access to Document

10.1039/DT9950001483

Cite this

@article{1a1b5f6777604273b399eb86dd322e71,

title = "Carbon-13 nuclear magnetic resonance studies of the redox reactions of aurothiomalates with selenocyanate in aqueous solution",

abstract = "The interactions of SCN- and SeCN- with aurothiomalate [Au(tm)]n in aqueous solution were studied by 13C NMR spectroscopy. The [Au(tm)]n is further polymerized in the presence of SCN-, however, SeCN- binds to [Au(tm)]n forming monomeric [Au(SeCN)(tm)]-. This complex initially disproportionates to give [Au(SeCN)2]- and [Au(tm)2]-. The [Au(SeCN)2]- eventually decomposed to give [Au(CN)2]- and metallic selenium. The free tm- released from [Au(tm)]n is oxidized to the thiomalic disulfide (tm)2. When the bis complex [Au(tm)2]- reacted with SeCN- it did not form [Au(SeCN)(tm)]-, but instead gave (tm)2, [Au(CN)2]- and Se22-.",

author = "Isab, \{Anvarhusein A.\} and Akhtar, \{M. Naseem\} and Al-Arfaj, \{Abdul Rahman\}",

year = "1995",

doi = "10.1039/DT9950001483",

language = "English",

pages = "1483--1487",

journal = "Journal of the Chemical Society, Dalton Transactions",

issn = "1472-7773",

publisher = "Royal Society of Chemistry",

number = "9",

}

TY - JOUR

T1 - Carbon-13 nuclear magnetic resonance studies of the redox reactions of aurothiomalates with selenocyanate in aqueous solution

AU - Isab, Anvarhusein A.

AU - Akhtar, M. Naseem

AU - Al-Arfaj, Abdul Rahman

PY - 1995

Y1 - 1995

N2 - The interactions of SCN- and SeCN- with aurothiomalate [Au(tm)]n in aqueous solution were studied by 13C NMR spectroscopy. The [Au(tm)]n is further polymerized in the presence of SCN-, however, SeCN- binds to [Au(tm)]n forming monomeric [Au(SeCN)(tm)]-. This complex initially disproportionates to give [Au(SeCN)2]- and [Au(tm)2]-. The [Au(SeCN)2]- eventually decomposed to give [Au(CN)2]- and metallic selenium. The free tm- released from [Au(tm)]n is oxidized to the thiomalic disulfide (tm)2. When the bis complex [Au(tm)2]- reacted with SeCN- it did not form [Au(SeCN)(tm)]-, but instead gave (tm)2, [Au(CN)2]- and Se22-.

AB - The interactions of SCN- and SeCN- with aurothiomalate [Au(tm)]n in aqueous solution were studied by 13C NMR spectroscopy. The [Au(tm)]n is further polymerized in the presence of SCN-, however, SeCN- binds to [Au(tm)]n forming monomeric [Au(SeCN)(tm)]-. This complex initially disproportionates to give [Au(SeCN)2]- and [Au(tm)2]-. The [Au(SeCN)2]- eventually decomposed to give [Au(CN)2]- and metallic selenium. The free tm- released from [Au(tm)]n is oxidized to the thiomalic disulfide (tm)2. When the bis complex [Au(tm)2]- reacted with SeCN- it did not form [Au(SeCN)(tm)]-, but instead gave (tm)2, [Au(CN)2]- and Se22-.

UR - https://www.scopus.com/pages/publications/37049071024

U2 - 10.1039/DT9950001483

DO - 10.1039/DT9950001483

M3 - Article

AN - SCOPUS:37049071024

SN - 1472-7773

SP - 1483

EP - 1487

JO - Journal of the Chemical Society, Dalton Transactions

JF - Journal of the Chemical Society, Dalton Transactions

IS - 9

ER -

Carbon-13 nuclear magnetic resonance studies of the redox reactions of aurothiomalates with selenocyanate in aqueous solution

Abstract

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this