Organic phase cyclopentadienylnickelthiolate sensor system for electrochemical determination of sulfur dioxide

Aoife Morrin; Richard M. Moutloali; Anthony J. Killard; Malcolm R. Smyth; James Darkwa; Emmanuel I. Iwuoha

doi:10.1002/elan.200403052

Organic phase cyclopentadienylnickelthiolate sensor system for electrochemical determination of sulfur dioxide

Aoife Morrin
, Richard M. Moutloali
, Anthony J. Killard
, Malcolm R. Smyth
, James Darkwa
, Emmanuel I. Iwuoha

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

4 Citations (Scopus)

Abstract

A series of cyclopentadienylnickelthiolate complexes, [Ni(PBu ₃)(η⁵-C₅H₅)(SC ₆,H₄X-4)] (X = F, Cl, Br, NH₂), were shown to express stable reversible electrochemical properties even after formation of SO₂ adducts in organic phase consisting of argon purged CH ₂Cl₂/0.1 M [n-Bu₄N][BF₄]. The formal potentials (E^o′) values of the compounds ranged from 265 to 431 mV/Ag-AgCl depending on the para substituent of the benzene thiolate ligand. Electrochemical, UV-vis and ¹H NMR spectroscopic analyses show that the formation of SO₂ adducts causes the perturbation of the electronic density of the nickel metal center, indicated by shifts in the E ^o′ values of the Ni^II/III redox couple that is dependent on SO₂ concentration. The detection limits of the resulting organic phase electrochemical gas sensor system was as low as 0.56 ppm SO ₂ for the fluoro complex, while the linear range was as high as 700-2000 ppm SO₂ for the amino complex.

Original language	English
Pages (from-to)	1944-1948
Number of pages	5
Journal	Electroanalysis
Volume	16
Issue number	23
DOIs	https://doi.org/10.1002/elan.200403052
Publication status	Published - Dec 2004
Externally published	Yes

Keywords

Cyclopentadienylnickelthiolate complex
Electrochemical sulfur dioxide sensor
Organic phase sulfur dioxide sensor
Potentiometric SO sensor
Sulfur dioxide determination

ASJC Scopus subject areas

Analytical Chemistry
Electrochemistry

Access to Document

10.1002/elan.200403052

Cite this

@article{d1139f95c5f44381a67ea029860ae12b,

title = "Organic phase cyclopentadienylnickelthiolate sensor system for electrochemical determination of sulfur dioxide",

abstract = "A series of cyclopentadienylnickelthiolate complexes, [Ni(PBu 3)(η5-C5H5)(SC 6,H4X-4)] (X = F, Cl, Br, NH2), were shown to express stable reversible electrochemical properties even after formation of SO2 adducts in organic phase consisting of argon purged CH 2Cl2/0.1 M [n-Bu4N][BF4]. The formal potentials (Eo′) values of the compounds ranged from 265 to 431 mV/Ag-AgCl depending on the para substituent of the benzene thiolate ligand. Electrochemical, UV-vis and 1H NMR spectroscopic analyses show that the formation of SO2 adducts causes the perturbation of the electronic density of the nickel metal center, indicated by shifts in the E o′ values of the NiII/III redox couple that is dependent on SO2 concentration. The detection limits of the resulting organic phase electrochemical gas sensor system was as low as 0.56 ppm SO 2 for the fluoro complex, while the linear range was as high as 700-2000 ppm SO2 for the amino complex.",

keywords = "Cyclopentadienylnickelthiolate complex, Electrochemical sulfur dioxide sensor, Organic phase sulfur dioxide sensor, Potentiometric SO sensor, Sulfur dioxide determination",

author = "Aoife Morrin and Moutloali, \{Richard M.\} and Killard, \{Anthony J.\} and Smyth, \{Malcolm R.\} and James Darkwa and Iwuoha, \{Emmanuel I.\}",

year = "2004",

month = dec,

doi = "10.1002/elan.200403052",

language = "English",

volume = "16",

pages = "1944--1948",

journal = "Electroanalysis",

issn = "1040-0397",

publisher = "Wiley-VCH Verlag",

number = "23",

}

TY - JOUR

T1 - Organic phase cyclopentadienylnickelthiolate sensor system for electrochemical determination of sulfur dioxide

AU - Morrin, Aoife

AU - Moutloali, Richard M.

AU - Killard, Anthony J.

AU - Smyth, Malcolm R.

AU - Darkwa, James

AU - Iwuoha, Emmanuel I.

PY - 2004/12

Y1 - 2004/12

N2 - A series of cyclopentadienylnickelthiolate complexes, [Ni(PBu 3)(η5-C5H5)(SC 6,H4X-4)] (X = F, Cl, Br, NH2), were shown to express stable reversible electrochemical properties even after formation of SO2 adducts in organic phase consisting of argon purged CH 2Cl2/0.1 M [n-Bu4N][BF4]. The formal potentials (Eo′) values of the compounds ranged from 265 to 431 mV/Ag-AgCl depending on the para substituent of the benzene thiolate ligand. Electrochemical, UV-vis and 1H NMR spectroscopic analyses show that the formation of SO2 adducts causes the perturbation of the electronic density of the nickel metal center, indicated by shifts in the E o′ values of the NiII/III redox couple that is dependent on SO2 concentration. The detection limits of the resulting organic phase electrochemical gas sensor system was as low as 0.56 ppm SO 2 for the fluoro complex, while the linear range was as high as 700-2000 ppm SO2 for the amino complex.

AB - A series of cyclopentadienylnickelthiolate complexes, [Ni(PBu 3)(η5-C5H5)(SC 6,H4X-4)] (X = F, Cl, Br, NH2), were shown to express stable reversible electrochemical properties even after formation of SO2 adducts in organic phase consisting of argon purged CH 2Cl2/0.1 M [n-Bu4N][BF4]. The formal potentials (Eo′) values of the compounds ranged from 265 to 431 mV/Ag-AgCl depending on the para substituent of the benzene thiolate ligand. Electrochemical, UV-vis and 1H NMR spectroscopic analyses show that the formation of SO2 adducts causes the perturbation of the electronic density of the nickel metal center, indicated by shifts in the E o′ values of the NiII/III redox couple that is dependent on SO2 concentration. The detection limits of the resulting organic phase electrochemical gas sensor system was as low as 0.56 ppm SO 2 for the fluoro complex, while the linear range was as high as 700-2000 ppm SO2 for the amino complex.

KW - Cyclopentadienylnickelthiolate complex

KW - Electrochemical sulfur dioxide sensor

KW - Organic phase sulfur dioxide sensor

KW - Potentiometric SO sensor

KW - Sulfur dioxide determination

UR - https://www.scopus.com/pages/publications/10644275292

U2 - 10.1002/elan.200403052

DO - 10.1002/elan.200403052

M3 - Article

AN - SCOPUS:10644275292

SN - 1040-0397

VL - 16

SP - 1944

EP - 1948

JO - Electroanalysis

JF - Electroanalysis

IS - 23

ER -

Organic phase cyclopentadienylnickelthiolate sensor system for electrochemical determination of sulfur dioxide

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this