Solvatochromism of heteroaromatic compounds: VI. Comparison of the empirical and theoretical approaches to description of solvatochromism in nonspecific solvation of nitropyrazoles was written by Vokin, A. I.;Shulunova, A. M.;Aksamentova, T. N.;Es’kova, L. A.;Elokhina, V. N.;Lopyrev, V. A.;Turchaninov, V. K.. And the article was included in Russian Journal of General Chemistry (Translation of Zhurnal Obshchei Khimii) in 2001.Name: 1-Methyl-3-nitro-1H-pyrazole This article mentions the following:
The effect of nonspecific solvation on the long-wave absorption band in the UV spectra of isomeric nitropyrazoles was studied. The aprotic inert and aprotic protophilic solvents exert different spectroscopic effects. In the former solvents, the solvatochromism is mainly governed by orientation interactions, and in the latter solvents, along with the orientation interactions, the UV spectrum is appreciably influenced by the induction, polarization, and dispersion interactions, which is due to the presence of readily polarizable nonbonding electron pairs and/or a π-electron system in mols. of such solvents. In the experiment, the researchers used many compounds, for example, 1-Methyl-3-nitro-1H-pyrazole (cas: 54210-32-1Name: 1-Methyl-3-nitro-1H-pyrazole).
1-Methyl-3-nitro-1H-pyrazole (cas: 54210-32-1) belongs to pyrazole derivatives. Pyrazoles, a five-membered heterocycle containing two adjacent nitrogen atoms, are the core structures found in a number of molecules that possess a wide range of pharmaceutical and agricultural activities. Pyrazoles can be selectively lithiated at different carbons and subsequently react with electrophiles depending on the substitution patterns.Name: 1-Methyl-3-nitro-1H-pyrazole
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics