Accepted Manuscript Title: DFT and QTAIM based investigation on the structure and antioxidant behavior of lichen substances Atranorin, Evernic acid and Diffractaic acid Authors: T.K. Shameera Ahamed, Vijisha K. Rajan, K. Sabira, K. Muraleedharan PII: S1476-9271(18)30627-3 DOI: https://doi.org/10.1016/j.compbiolchem.2019.03.009 Reference: CBAC 7032 To appear in: Computational Biology and Chemistry Received date: 30 August 2018 Revised date: 18 March 2019 Accepted date: 22 March 2019 Please cite this article as: Shameera Ahamed TK, Rajan VK, Sabira K, Muraleedharan K, DFT and QTAIM based investigation on the structure and antioxidant behavior of lichen substances Atranorin, Evernic acid and Diffractaic acid, Computational Biology and Chemistry (2019), https://doi.org/10.1016/j.compbiolchem.2019.03.009 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.