Raman spectroscopic characterization of selenium N-heterocyclic carbene compounds

In this study, Raman spectroscopy is employed to analyze and characterize two salts (N-heterocyclic carbene) and their respective selenium N-heterocyclic carbene compounds. The features observed as differences among Raman spectral data of two different N-heterocyclic carbene salts are called Salt-I and Salt-II and their respective Se compounds, called Compound-I & Compound-II, are used to confirm the formation covalent bond between Se atom carbon atom of carbene. Enhancement in peak intensities and shifting of peak positions is directly related with compound formation. Raman spectral data provide a detail information about bond formation, chemical and structural differences between salts and compounds. The observed Raman spectral features of both salts and compounds are in consistent with computationally calculated Raman spectral features. Raman spectral features of each salt and its respective compound was further analyzed with principal component analysis, which was found helpful for differentiating each salt from its respective compound. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

In this study, Raman spectroscopy was used to analyze and characterize two salts and their corresponding selenium compounds. The formation of covalent bonds between Se atom and carbon atom of carbene compounds was confirmed through the observation of differences in Raman spectral data. The Raman spectral features provided detailed information about bond formation, chemical and structural differences between salts and compounds. Principal component analysis was found helpful for differentiating each salt from its respective compound.