Density Functional Theory Studies of Bonding in Complexes H<sub>3</sub>N–XY of Ammonia and Dihalogen Molecules: A Comparison with Experimental Results from Rotational Spectroscopy

Abstract

The electron density and nuclear quadrupole coupling constants (NQCC) of the H₃N-XY (n aσ type in Mulliken notation) complexes, (X, Y = F, Cl, Br and I), are analyzed with the aid of density functional calculations. To demonstrate the quality of the calculations, various bond lengths and NQCCs obtained by using the hybrid Becke-Lee-Perdew-Yang functional are compared with the corresponding experimental values determined from rotational spectroscopy. An analysis of the NQCC values and various quantities derived from the natural bond orbital approach reveals that the molecular interaction is mainly electrostatic, with probably only a small extent of intermolecular electric charge redistribution on complex formation.

Original language	English
Pages (from-to)	537-543
Number of pages	7
Journal	Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume	57
Issue number	6-7
DOIs	https://doi.org/10.1515/zna-2002-6-746
Publication status	Published - 1 Jan 2002

Keywords

complexes
DFT
n aσ
Quadrupole Coupling Constants

ASJC Scopus subject areas

Mathematical Physics
Physics and Astronomy(all)
Physical and Theoretical Chemistry

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Density Functional Theory Studies of Bonding in Complexes H₃N–XY of Ammonia and Dihalogen Molecules : A Comparison with Experimental Results from Rotational Spectroscopy. / Poleshchuk, O. Kh; Legon, A. C.

In: Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences, Vol. 57, No. 6-7, 01.01.2002, p. 537-543.

Research output: Contribution to journal › Article › peer-review

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abstract = "The electron density and nuclear quadrupole coupling constants (NQCC) of the H3N-XY (n aσ type in Mulliken notation) complexes, (X, Y = F, Cl, Br and I), are analyzed with the aid of density functional calculations. To demonstrate the quality of the calculations, various bond lengths and NQCCs obtained by using the hybrid Becke-Lee-Perdew-Yang functional are compared with the corresponding experimental values determined from rotational spectroscopy. An analysis of the NQCC values and various quantities derived from the natural bond orbital approach reveals that the molecular interaction is mainly electrostatic, with probably only a small extent of intermolecular electric charge redistribution on complex formation.",

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AB - The electron density and nuclear quadrupole coupling constants (NQCC) of the H3N-XY (n aσ type in Mulliken notation) complexes, (X, Y = F, Cl, Br and I), are analyzed with the aid of density functional calculations. To demonstrate the quality of the calculations, various bond lengths and NQCCs obtained by using the hybrid Becke-Lee-Perdew-Yang functional are compared with the corresponding experimental values determined from rotational spectroscopy. An analysis of the NQCC values and various quantities derived from the natural bond orbital approach reveals that the molecular interaction is mainly electrostatic, with probably only a small extent of intermolecular electric charge redistribution on complex formation.

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