Hydrogen bond interactions strongly affect vibrational properties and frequencies, the most common consequence being a redshift of the stretching vibration involved; there are, however, few exceptions to this general trend. In previous works, we have proved the effectiveness of ab initio simulations combined with wavelet analysis to investigate these effects and put them into relation to structural environment. In this work, we investigate the hydrogen bond effects on the structural and vibrational properties of 1,3-propanediol in acetonitrile by a combined experimental and computational approach. We explain the appearance of two spectral components in the O-H stretching band on the basis of intra- and intermolecular hydrogen bond interactions. We also elucidate the blueshift of the CN stretching band as due to a hydrogen bond interaction between the glycol and acetonitrile that modify the electron density distribution inside the CN group. This effect is well reproduced by ab initio molecular dynamics simulations and density functional calculations reported in this work. © 2012 American Institute of Physics.

Hydrogen bond effects in the vibrational spectra of 1,3-propanediol in acetonitrile: Ab initio and experimental study / Muniz Miranda, F.; Pagliai, Marco; Cardini, G.; Righini, R.. - In: THE JOURNAL OF CHEMICAL PHYSICS. - ISSN 0021-9606. - 137:24(2012), pp. 244501-244511. [10.1063/1.4770499]

Hydrogen bond effects in the vibrational spectra of 1,3-propanediol in acetonitrile: Ab initio and experimental study

Muniz Miranda F.;
2012

Abstract

Hydrogen bond interactions strongly affect vibrational properties and frequencies, the most common consequence being a redshift of the stretching vibration involved; there are, however, few exceptions to this general trend. In previous works, we have proved the effectiveness of ab initio simulations combined with wavelet analysis to investigate these effects and put them into relation to structural environment. In this work, we investigate the hydrogen bond effects on the structural and vibrational properties of 1,3-propanediol in acetonitrile by a combined experimental and computational approach. We explain the appearance of two spectral components in the O-H stretching band on the basis of intra- and intermolecular hydrogen bond interactions. We also elucidate the blueshift of the CN stretching band as due to a hydrogen bond interaction between the glycol and acetonitrile that modify the electron density distribution inside the CN group. This effect is well reproduced by ab initio molecular dynamics simulations and density functional calculations reported in this work. © 2012 American Institute of Physics.
2012
137
24
244501
244511
Hydrogen bond effects in the vibrational spectra of 1,3-propanediol in acetonitrile: Ab initio and experimental study / Muniz Miranda, F.; Pagliai, Marco; Cardini, G.; Righini, R.. - In: THE JOURNAL OF CHEMICAL PHYSICS. - ISSN 0021-9606. - 137:24(2012), pp. 244501-244511. [10.1063/1.4770499]
Muniz Miranda, F.; Pagliai, Marco; Cardini, G.; Righini, R.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1258638
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