1. Single alkali metal-doped hexalithioborazine complexes with exceptionally high value of polarizability and first hyperpolarizability: a DFT-based computational study.
- Author
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Mandal, Usha, Samanta, Shashanka Shekhar, Giri, Subhadip, and Misra, Ajay
- Subjects
GIBBS' free energy ,ELECTRON donor-acceptor complexes ,BINDING energy ,ALKALI metals ,CHARGE transfer ,DIPOLE moments - Abstract
Alkali atom-doped hexalithioborazine (B
3 N3 Li6 -M) as a novel class of super-alkali complex has been investigated for their exceptionally high first-order and second-order electrical responsive properties. The stability of resulting complexes, B3 N3 Li6 -M (M = Li, Na, and K), is confirmed by the ADMP simulation and the negative values of thermodynamic parameters such as binding energy (∆Eb ) and Gibbs free energy (∆G). The relationship between aromaticity (NICS) and first hyperpolarizability of B3 N3 Li6 -M follows linear relationship. Diffuse electron cloud around the central ring and doped alkali metal in the HOMO of B3 N3 Li6 -M complexes has been attributed to the charge transfer from peripheral Li to the dopant metal (M) atom. The dipole moment of B3 N3 Li6 -M varies between 0.507 D (M = Na) and 1.608 D (M = Li) due to charge transfer in these complexes. The mean polarizabilities (αav ) of B3 N3 Li6 -M ranging from 573.08 to 1598.86 a.u are observed. Exceptionally high value of second-order NLO parameter (βav = 5.133 × 105 a.u and βHRS = 2.166 × 106 a.u) are observed in case of Li-doped B3 N3 Li6 in this series. Thus, the first hyperpolarizability (βav and βHRS ) values of the complexes produced by the interactions between alkali metal atoms (M) and B3 N3 Li6 are strong enough to demonstrate as potential second-order NLO materials. [ABSTRACT FROM AUTHOR]- Published
- 2023
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