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Issue 24, 2012
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The nature of Ru–NO bonds in ruthenium tetraazamacrocycle nitrosyl complexes—a computational study

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Abstract

Ruthenium complexes including nitrosyl or nitrite complexes are particularly interesting because they can not only scavenge but also release nitric oxide in a controlled manner, regulating the NO-level in vivo. The judicious choice of ligands attached to the [RuNO] core has been shown to be a suitable strategy to modulate NO reactivity in these complexes. In order to understand the influence of different equatorial ligands on the electronic structure of the Ru–NO chemical bonding, and thus on the reactivity of the coordinated NO, we propose an investigation of the nature of the Ru–NO chemical bond by means of energy decomposition analysis (EDA), considering tetraamine and tetraazamacrocycles as equatorial ligands, prior to and after the reduction of the {RuNO}6 moiety by one electron. This investigation provides a deep insight into the Ru–NO bonding situation, which is fundamental in designing new ruthenium nitrosyl complexes with potential biological applications.

Graphical abstract: The nature of Ru–NO bonds in ruthenium tetraazamacrocycle nitrosyl complexes—a computational study

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Article information


Submitted
03 Nov 2011
Accepted
29 Mar 2012
First published
11 May 2012

Dalton Trans., 2012,41, 7327-7339
Article type
Paper

The nature of Ru–NO bonds in ruthenium tetraazamacrocycle nitrosyl complexes—a computational study

G. F. Caramori, A. G. Kunitz, K. F. Andriani, F. G. Doro, G. Frenking and E. Tfouni, Dalton Trans., 2012, 41, 7327
DOI: 10.1039/C2DT12094A

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