Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1021, Issue -, Pages 153-157Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2012.04.075
Keywords
Charge transfer complex; Density Functional Theory; p-Chloranil; Paracetamol
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Funding
- CSIR
- DST, New Delhi
- UGC, New Delhi
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The present report deals with the theoretical investigation on ground state structure and charge transfer (CT) transitions in paracetamol (PA)/p-chloranil (CA) complex using Density Functional Theory (DFT) and Time Dependent Density Functional Theory (TD-DFT) method. It is found that C=O bond length of p-chloranil increases on complexation with paracetamol along with considerable amount of charge transfer from PA to CA. TD-DFT calculations have been performed to analyse the observed UV-visible spectrum of PA-CA charge transferred complex. Interestingly, in addition to expected CT transition, a weak symmetry relieved pi-pi(center dot) transition in the chloranil is also observed. (C) 2012 Elsevier B.V. All rights reserved.
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