RuIII(edta)-mediated interaction of nitrite and sulphide: formation of an N-bonded thionitrous acid (HSNO) complex of RuIII(edta) in aqueous solution

Debabrata Chatterjee; Chandra Chowdhury; Ayan Datta; Rudi van Eldik

doi:10.1039/C9NJ04074A

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Ru^III(edta)-mediated interaction of nitrite and sulphide: formation of an N-bonded thionitrous acid (HSNO) complex of Ru^III(edta) in aqueous solution†

Debabrata Chatterjee,

*^ab Chandra Chowdhury,^c Ayan Datta

^c and Rudi van Eldik

*^bd

Author affiliations

* Corresponding authors

^a Vice-Chancellor's Research Group at Zoology Department, University of Burdwan, Burdwan-713104, India
E-mail: dchat57@hotmail.com

^b Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Egerlandstr. 1, 91058 Erlangen, Germany

^c School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India

^d Faculty of Chemistry, N. Copernicus University, Gagarina 7, 87-100 Toruń, Poland

Abstract

The nitrite anion (NO₂⁻) is an important source of nitric oxide (NO) or nitrosonium cations (NO⁺). In the present study, we have shown that [Ru^III(edta)(NO⁺)] (edta⁴⁻ = ethylendiaminetetraacetate) generated via decomposition of [Ru^III(edta)(NO₂)]²⁻ at lower pH (3.5) could react with H₂S to form a putative thionitrous acid (HSNO) bound Ru(edta) complex in aqueous solution. The reaction product [Ru^III(edta)(NOSH)]⁻ was characterized by IR, EPR and ESI-MS spectroscopy. Formation of N-coordinated [Ru^III(edta)(NOSH)]⁻ was further corroborated by DFT calculations.

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Article information

DOI: https://doi.org/10.1039/C9NJ04074A
Article type: Paper
Submitted: 06 Aug 2019
Accepted: 03 Sep 2019
First published: 03 Sep 2019

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New J. Chem., 2019,43, 15311-15315

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Ru^III(edta)-mediated interaction of nitrite and sulphide: formation of an N-bonded thionitrous acid (HSNO) complex of Ru^III(edta) in aqueous solution

D. Chatterjee, C. Chowdhury, A. Datta and R. van Eldik, New J. Chem., 2019, 43, 15311 DOI: 10.1039/C9NJ04074A

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