Volume 111, Issue 9 pp. 2054-2063
Properties, Dynamics and Electronic Structure of Atoms and Molecules

The nitric oxide adsorption on gold neutral, cation, and anion atoms: A comparative ab initio MRCI—MRPT2 studies

O. Olvera-Neria

Corresponding Author

O. Olvera-Neria

Área de Física Atómica Molecular Aplicada (FAMA), CBI, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo 180, Col. Reynosa Tamaulipas, México, D. F. 02200, México

Área de Física Atómica Molecular Aplicada (FAMA), CBI, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo 180, Col. Reynosa Tamaulipas, México, D. F. 02200, MéxicoSearch for more papers by this author
V. Bertin

V. Bertin

Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, México, D.F. 09340, México

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E. Poulain

E. Poulain

Área de Física Atómica Molecular Aplicada (FAMA), CBI, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo 180, Col. Reynosa Tamaulipas, México, D. F. 02200, México

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First published: 21 April 2011
Citations: 6

This article is dedicated to the memory of our dear friend Jean Pierre Daudey, Laboratoire de Physique Quantique de Toulouse (IRSAMC), he wrote one of the programs used here.

Abstract

The Auν + NO(2Π) → AuNOν reaction, for ν = −1, 0, +1, anion, neutral, and cation are calculated and predicted at multireference configuration interaction (MRCI) and multireference second order perturbation (MRPT2) levels of theory, in this way the main parameters: reaction path surfaces, total and adsorption energies, optimized geometries, and Mulliken charges distribution are presented and compared. The AuNO (X 1A′) complex is created spontaneously with −11.32 and −13.14 kcal/mol adsorption energies with the MRCI and MRPT2 approaches, respectively. The AuNO bonding in the neutral gold nitrosyl complex has a covalent character and the nitric oxide (NO) molecule is not dissociated. The others excited states (a 3A″, b 3A′, and A 1A″) do not present bonding. The gold nitrosyl cationic (X 2A′, A 2A″, and a 4A″) and anionic (X 2A″ and a 4A″) are bonding and present a dative covalent bond. The Mulliken analysis done for ionic species show that the binding is done through soft electrostatic interactions, due to that there is some charge transfer, delocalized onto the NO molecule for the AuNO± ionic species whereas the AuNO (X 1A′) neutral complex presents a little charge transfer. © 2010 Wiley Periodicals, Inc. Int J Quantum Chem, 2011

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