Density Functional Theory Study of the Interaction of Nitric Oxide with 3D Transition Metal Dimers

Abstract:

Density-functional theory (DFT) has been used to calculate the interaction of nitric oxide with 3d metal dimers (scandium through zinc) and determine the ground-state geometrical configurations and vibrational frequencies. Results are compared to the relevant experimental values and to other theoretical investigations when available, and the overall agreement has been obtained. On going from left to right side of the Periodic Table, the preference for the coordination mode of NO to transition-metal dimers is from side-on-bonded mode (Sc, Ti, V), via semibridging (Cr), to end-on-bonded mode (Mn, Fe, Co, Ni, Cu). The N-O stretching vibrational frequencies in the ground states of M₂NO (M = Sc to Zn) increase generally from the left to the right side of the Periodic Table, whereas the N-O bond lengths decrease generally. The binding energies exhibit an overall decrease trend. These general trends in the interaction of nitric oxide with 3d metal dimers mirror the main features of NO adsorption on transition metal surfaces.

• Periodical: Materials Science Forum (Volume 804)
• Pages: 145-148
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.804.145
• Online since: October 2014
• Authors: Jing Nie*, Rui Jie Li, Li Jun He, Jin Li
• Keywords: 3D Metal Dimmers, Coordination Mode, Density Functional Theory, Nitric Oxide, Vibrational Frequency

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