Journal
ACS OMEGA
Volume 6, Issue 10, Pages 7047-7057Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c06323
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Funding
- HEC Pakistan [21e2037/SRGP/RD/HEC/2018, 2017/1314]
- KFUEIT RYK
- Research Center of Advanced Materials, King Khalid University, Saudi Arabia [RCAMS/KKU/0020/20]
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By utilizing techniques such as X-ray crystallography and density functional theory, the structures and properties of two newly synthesized heterocyclic compounds were characterized, revealing their significant molecular stability and nonlinear optical responses, which could be crucial for their potential applications in advanced technologies.
Two heterocyclic compounds named 2,6-diaminopyrimidin-4ylnaphthalene-2- sulfonate (A) and 2,6-diaminopyrimidin-4-yl4-methylbenzene sulfonate (B) were synthesized. The structures of heterocyclic molecules were established by the X-ray crystallographic technique, which showed several noncovalent interactions as N center dot center dot center dot H center dot center dot center dot N, N center dot center dot center dot H center dot center dot center dot O, and C-H center dot center dot center dot O bonding and parallel offset stacking interaction. Hydrogen-bonding interactions were further explored by the Hirshfeld surface (HS) analysis. Nonlinear optical (NLO) and natural bond orbital (NBO) properties were calculated utilizing the B3LYP/6311G(d,p) level. Frontier molecular orbitals (FMOs) and molecular electrostatic potential (MEP) were calculated utilizing the time-dependent density functional theory (TD-DFT) at the same level. The NBO analysis showed that the molecular stabilities of compounds A and B were attributed to their large stabilization energy values. The second hyperpolarizability (gamma(tot)) values for A and B were obtained as 3.7 x 10(4) and 2.7 x 10(4) au, respectively. The experimental X-ray crystallographic and theoretical structural parameters of A and B were found to be in close correspondence. Both the molecules reveal substantial NLO responses that can be significant for their utilization in advanced applications.
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