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Name: Satyam Srivastav Affiliation: Banaras Hindu University, Varanasi Conference ID: ASI2020_183 Title : Interstellar branched-chain molecules Authors and Co-Authors : Satyam Srivastav, Milan Sil, Prasanta Gorai, Ankan Das, Bhalamurugan Shivaraman, Amit Pathak Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : The recent discovery of the first straight-chain molecule (n-propyl cyanide) and branched-chain (isopropyl cyanide) molecules around the star-forming region, Sgr B2(N2) provides an example of the chemical complexity of the star-forming region. Since the branched-chain molecules are the precursor of amino acids., it is essential to explain the formation of these molecules under such a tenuous environment. In this light, we reckon n-butyl cyanide and higher-order branched chain molecule, t-butyl cyanide from the C5H9N isomeric group to study their formation mechanism and their attachment with the interstellar ices. We employed high-level quantum chemical calculations to calculate various chemical parameters (binding energy, enthalpy of formation, reaction enthalpies, activation barrier, dipole moments and other spectroscopic information) which are very useful to construct a gas-grain chemical model to estimate the abundance of these branched-chain species in the star-forming region. |