Aggregation behavior of group 12 complexes of a tripodal mixed NS(thiolato) donor ligand

Michelle A. Sturner; Isla D. Thomas; Joshua E. Owusu-Koramoah; Todd M. Reynolds; Steven M. Berry; Raymond J. Butcher; Deborah C. Bebout

doi:10.1039/d3nj05532a

Aggregation behavior of group 12 complexes of a tripodal mixed NS(thiolato) donor ligand

Michelle A. Sturner, Isla D. Thomas, Joshua E. Owusu-Koramoah, Todd M. Reynolds, Steven M. Berry, Raymond J. Butcher, Deborah C. Bebout

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

Abstract

Despite the concurrence of histidine and cysteine in the active sites of proteins associated with Zn²⁺, Cd²⁺ and Hg²⁺, coordination studies of these metal ions with chelating ligands containing a combination of aromatic amine and alkylthiolate (N^A_xS_y⁻) donors have been rare. The potentially tetradentate ligand 2-[bis(2-pyridinylmethyl)amino]ethanethiol (LH) and chloride salts were used to prepare new complexes of Cd²⁺ and Hg²⁺ for comparison with the known Zn²⁺ complex. Solution NMR studies revealed concentration-dependent equilibria between aggregate forms of the new complexes in CD₃CN. Trends in homonuclear and heteronuclear coupling provided additional insight regarding solution equilibria. ESI-MS from acetonitrile solutions supported differences in preferred aggregation states consistent with the solution NMR studies.

Original language	English (US)
Pages (from-to)	2547-2557
Number of pages	11
Journal	New Journal of Chemistry
Volume	48
Issue number	6
DOIs	https://doi.org/10.1039/d3nj05532a
State	Published - Jan 12 2024
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2024 The Royal Society of Chemistry.

Access

10.1039/d3nj05532a

OpenUrl availability

Full text

Cite this

@article{cff4bcf9b79c41919cff01e43e684d50,

title = "Aggregation behavior of group 12 complexes of a tripodal mixed NS(thiolato) donor ligand",

abstract = "Despite the concurrence of histidine and cysteine in the active sites of proteins associated with Zn2+, Cd2+ and Hg2+, coordination studies of these metal ions with chelating ligands containing a combination of aromatic amine and alkylthiolate (NAxSy−) donors have been rare. The potentially tetradentate ligand 2-[bis(2-pyridinylmethyl)amino]ethanethiol (LH) and chloride salts were used to prepare new complexes of Cd2+ and Hg2+ for comparison with the known Zn2+ complex. Solution NMR studies revealed concentration-dependent equilibria between aggregate forms of the new complexes in CD3CN. Trends in homonuclear and heteronuclear coupling provided additional insight regarding solution equilibria. ESI-MS from acetonitrile solutions supported differences in preferred aggregation states consistent with the solution NMR studies.",

author = "Sturner, {Michelle A.} and Thomas, {Isla D.} and Owusu-Koramoah, {Joshua E.} and Reynolds, {Todd M.} and Berry, {Steven M.} and Butcher, {Raymond J.} and Bebout, {Deborah C.}",

note = "Publisher Copyright: {\textcopyright} 2024 The Royal Society of Chemistry.",

year = "2024",

month = jan,

day = "12",

doi = "10.1039/d3nj05532a",

language = "English (US)",

volume = "48",

pages = "2547--2557",

journal = "New Journal of Chemistry",

issn = "1144-0546",

publisher = "Royal Society of Chemistry",

number = "6",

}

TY - JOUR

T1 - Aggregation behavior of group 12 complexes of a tripodal mixed NS(thiolato) donor ligand

AU - Sturner, Michelle A.

AU - Thomas, Isla D.

AU - Owusu-Koramoah, Joshua E.

AU - Reynolds, Todd M.

AU - Berry, Steven M.

AU - Butcher, Raymond J.

AU - Bebout, Deborah C.

PY - 2024/1/12

Y1 - 2024/1/12

N2 - Despite the concurrence of histidine and cysteine in the active sites of proteins associated with Zn2+, Cd2+ and Hg2+, coordination studies of these metal ions with chelating ligands containing a combination of aromatic amine and alkylthiolate (NAxSy−) donors have been rare. The potentially tetradentate ligand 2-[bis(2-pyridinylmethyl)amino]ethanethiol (LH) and chloride salts were used to prepare new complexes of Cd2+ and Hg2+ for comparison with the known Zn2+ complex. Solution NMR studies revealed concentration-dependent equilibria between aggregate forms of the new complexes in CD3CN. Trends in homonuclear and heteronuclear coupling provided additional insight regarding solution equilibria. ESI-MS from acetonitrile solutions supported differences in preferred aggregation states consistent with the solution NMR studies.

AB - Despite the concurrence of histidine and cysteine in the active sites of proteins associated with Zn2+, Cd2+ and Hg2+, coordination studies of these metal ions with chelating ligands containing a combination of aromatic amine and alkylthiolate (NAxSy−) donors have been rare. The potentially tetradentate ligand 2-[bis(2-pyridinylmethyl)amino]ethanethiol (LH) and chloride salts were used to prepare new complexes of Cd2+ and Hg2+ for comparison with the known Zn2+ complex. Solution NMR studies revealed concentration-dependent equilibria between aggregate forms of the new complexes in CD3CN. Trends in homonuclear and heteronuclear coupling provided additional insight regarding solution equilibria. ESI-MS from acetonitrile solutions supported differences in preferred aggregation states consistent with the solution NMR studies.

UR - http://www.scopus.com/inward/record.url?scp=85182799849&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85182799849&partnerID=8YFLogxK

U2 - 10.1039/d3nj05532a

DO - 10.1039/d3nj05532a

M3 - Article

AN - SCOPUS:85182799849

SN - 1144-0546

VL - 48

SP - 2547

EP - 2557

JO - New Journal of Chemistry

JF - New Journal of Chemistry

IS - 6

ER -

Aggregation behavior of group 12 complexes of a tripodal mixed NS(thiolato) donor ligand

Abstract

Bibliographical note

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this