Intermolecular Complexes and Molecular Conformations Directed by Hydrogen Bonds: Matrix Isolation and Ab Initio Studies

Saini, Jyoti; Dubey, P K; Verma, Kanupriya; Karir, Ginny; Viswanathan, K. S.

doi:10.1007/s41745-019-00152-6

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2023

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“…The matrix isolation method is a technique used for experimental studies which was suggested for the first time by Pimentel, Whittle, and Dows [ 1 , 2 , 3 ]. This method has been successfully developed for decades and it has been described in a number of reviews [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. It is noteworthy that the inter- and intramolecular interactions under matrix isolation conditions are often specific and differ from interactions in gas phase, solutions, or in solid state [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

UV Laser-Induced Phototransformations of Matrix-Isolated 5-Chloro-3-nitro-2-hydroxyacetophenone

Pagacz-Kostrzewa

Mucha

Wierzejewska

et al. 2023

IJMS

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Conformational changes of 5-chloro-3-nitro-2-hydroxyacetophenone were studied by experimental and theoretical methods. Phototransformations of the compound were induced in low-temperature argon matrices by using UV radiation, which was followed by FT-IR measurements. Two types of changes within the molecule were detected: rotations of the hydroxyl and acetyl groups. A new conformer without an intramolecular hydrogen bond was generated upon irradiation with λ = 330 nm, whereas the reverse reaction was observed at 415 nm.

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