Recent synthesis of sp-hybridized cyclo [18]carbon allotrope has attracted immense curiosity. Since then, a generous amount of theoretical studies concerning aromaticity, adsorption, and spectra of the molecule have been performed. However, very few stuides have been carried out concerning its reactivities and catalytic behaviour. In this article, a DFT-based inquisition has been reported regarding the reactivity of Si substituted cyclo [18]carbon molecule towards molecular N 2 . Results show that the Si substituted derivative is effective in producing adducts with molecular nitrogen. Charge calculations and IRC trapping methods indicate that only the Si center of C 17 Si and its (HOMO-1) level participate in N 2 addition. The N-adduct so formed, is then found to spontaneously react with molecular H 2 . The addition of two H 2 molecules to the activated nitrogen molecule to give respective amine derivatives have also been studied. The successful generation of the precursor of NH 3 by C 17 Si lays a clear emphasis on its potentiality.
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