Journal
CHEMICAL PHYSICS LETTERS
Volume 828, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2023.140734
Keywords
DFT calculations; Solvent effect; HCN clusters; IR spectroscopy; Raman spectroscopy
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The electronic structure, IR spectra, and Raman spectra of (HCN)(n) clusters were investigated using DFT calculations accounting for solvent effects. Both linear and cyclic structures were optimized and it was found that linear structures are local minima with or without solvent effects. Calculations with solvent effects showed faster convergence and the predicted spectra agreed well with previous theoretical and experimental results, especially when considering the solvent effects. Estimates of the IR spectrum for liquid HCN and the gas-phase Raman spectrum were also provided.
The electronic structure, and the IR- and Raman-spectroscopies of (HCN)(n) clusters are discussed. DFT is employed in all calculations both in its standard framework and including the solvent effect. Both linear and cyclic structures are optimized. The linear structures are local minima, both with and without the solvent effect. The spectra calculated with the latter present a faster convergence than standard calculations. The predicted spectra agree generally with previous theoretical and experimental results, mainly when considering the solvent effect. Estimates of the IR spectrum of the liquid HCN, and of the gas-phase Raman spectrum are also reported.
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