Superalkali-doped borazine and lithiated borazine complexes: diffuse excess electron and large first-hyperpolarizability


A number of superalkali (M3O / M3S; M = Li, Na, K)-doped borazine and hexalithio borazine complexes are considered for the theoretical study of their electronic structure and quadratic polarizability. Electron-rich O/S atom of superalkali species remains very close to one boron atom of the ring through non-covalent interaction. The first-hyperpolarizability increases rather significantly upon superalkali doping. The chosen complexes possess diffuse excess electron which is located on the superpalkali moiety of borazine complexes and at the ring site of lithiated borazines. First-hyperpolarizability of M3O(S)@B3N3Li6 complexes are significantly larger than that of the corresponding M3O(S)@B3N3H6 complexes. The magnitude of first-hyperpolarizability of Li3S@B3N3Li6 is larger than that of Li3S@B3N3H6 by about three orders of magnitude.

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All authors contributed to the present work by giving their own conception and design. The computational tasks, tabulation of results, and appropriate theoretical justification/analysis were performed by Ria Sinha Roy, Subhadip Ghosh and Kaushik Hatua. The manuscript in the final form was checked and prepared by Ria Sinha Roy and Prasanta K. Nandi. All authors gave their specific scientific inputs and suggestions to improve the quality of the manuscript. All authors read and approved the final manuscript.

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The geometrical parameters, NBO calculated atomic charges, mean polarizability, first- hyperpolarizability and TDDFT calculated results are reported in Tables S1, S2, S3, S4, S5, S6, S7, S8, S9 and S10, respectively. The optimized structures of superalkali species are shown in Fig. S1 in this section. (DOCX 94 kb) (DOCX 94 kb)

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Roy, R.S., Ghosh, S., Hatua, K. et al. Superalkali-doped borazine and lithiated borazine complexes: diffuse excess electron and large first-hyperpolarizability. J Mol Model 27, 74 (2021).

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  • Superalkali-doped borazine and lithiated borazine complexes
  • Diffuse excess electron
  • Spectroscopic properties
  • Large first-hyperpolarizability