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Nature of the Ru-NO Coordination Bond: Kohn-Sham Molecular Orbital and Energy Decomposition Analysis.


ABSTRACT: We have analyzed structure, stability, and Ru-NO bonding of the trans-[RuCl(NO)(NH3)4]2+ complex by using relativistic density functional theory. First, we focus on the bond dissociation energies associated with the three canonical dissociation modes leading to [RuCl(NH3)4]++NO+, [RuCl(NH3)4]2++NO, and [RuCl(NH3)4]3++NO-. The main objective is to understand the Ru-NO+ bonding mechanism in the conceptual framework of Kohn-Sham molecular orbital theory in combination with a quantitative energy decomposition analysis. In our analyses, we have addressed the importance of the synergism between Ru-NO+ ?-donation and ?-backdonation as well as the so-called negative trans influence of the Cl- ligand on the Ru-NO bond. For completeness, the Ru-NO+ bonding mechanism is compared with that of the corresponding Ru-CO bond.

SUBMITTER: Orenha RP 

PROVIDER: S-EPMC5474663 | biostudies-other | 2017 Jun

REPOSITORIES: biostudies-other

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Nature of the Ru-NO Coordination Bond: Kohn-Sham Molecular Orbital and Energy Decomposition Analysis.

Orenha Renato P RP   Rocha Marcus V J MVJ   Poater Jordi J   Galembeck Sérgio E SE   Bickelhaupt F Matthias FM  

ChemistryOpen 20170330 3


We have analyzed structure, stability, and Ru-NO bonding of the <i>trans</i>-[RuCl(NO)(NH<sub>3</sub>)<sub>4</sub>]<sup>2+</sup> complex by using relativistic density functional theory. First, we focus on the bond dissociation energies associated with the three canonical dissociation modes leading to [RuCl(NH<sub>3</sub>)<sub>4</sub>]<sup>+</sup>+NO<sup>+</sup>, [RuCl(NH<sub>3</sub>)<sub>4</sub>]<sup>2+</sup>+NO, and [RuCl(NH<sub>3</sub>)<sub>4</sub>]<sup>3+</sup>+NO<sup>-</sup>. The main object  ...[more]

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