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Issue 22, 2004
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Ab initio study of the fluoride–ammonia clusters: F–(NH3)n, n = 1–3

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Abstract

Fluoride–ammonia clusters have been investigated via ab initio calculations at the MP2 level of theory, using Dunning’s augmented correlation consistent basis sets. Optimised geometries, vibrational frequencies, and enthalpy changes for the ligand association reactions are presented for clusters with one, two, and three ammonias bound to a fluoride anion. The minimum energy structure for the F–NH3 complex, with Cs symmetry, displays a single hydrogen bond between the ammonia and fluoride anion. For the F–(NH3)2 cluster, two closely lying minima with C2 and C1 symmetry were predicted. For F–(NH3)3, four minima were located, with the minimum energy structure having C3h symmetry. Calculated infrared spectra for the minima are presented to aid in assigning spectra from future experimental studies.

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Article information


Submitted
11 Aug 2004
Accepted
15 Sep 2004
First published
08 Oct 2004

Phys. Chem. Chem. Phys., 2004,6, 5122-5132
Article type
Paper

Ab initio study of the fluoride–ammonia clusters: F–(NH3)n, n = 1–3

D. A. Wild and T. Lenzer, Phys. Chem. Chem. Phys., 2004, 6, 5122
DOI: 10.1039/B412414F

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