Photo-Isomerization and Decarboxilation of 2-Amino-5-Chlorobenzoic Acid in Argon Matrix

Year 2018, Volume: 5 Issue: 2, 55 - 63, 28.12.2018

Nihal Kuş

Abstract

In this paper, the
matrix isolation infrared spectroscopy technique is presented, and its
application to the work of photoisomerization reaction for
2-amino-5-chlorobenzoic acid (AClBA) was studied by matrix isolation
spectroscopy in argon matrix at 15 K. The considered photoreactions include
conformational isomerizations as well as bond-breaking/bond-forming structural
isomerizations. UV irradiation at l
> 234 nm of the matrix-isolated compound was found to lead to conversion of
this conformer into the other conformers and also to decarboxylation of the
AClBA, producted with of CO₂ and 2-amino-5-chlorobenzene (AClB). The
analysis of the experimental data on matrix isolated AClBA was supported by
extensive quantum chemical calculations.

Keywords

Matrix isolation IR spectroscopy, 2-Amino-5-Chlorobenzoic Acid, Photoisomerization, Decarboxcylation

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