Infrared study on the double hydrogen bond between the urea molecule and halogenated aliphatic hydrocarbon solvents

Autor:	Aleksander P. Mazurek, Jan Cz. Dobrowolski, M.H. Jamróz
Rok vydání:	1994
Předmět:	Physics::Biological Physics Quantitative Biology::Biomolecules Valence (chemistry) Hydrogen bond Infrared spectroscopy Photochemistry Solvent chemistry.chemical_compound chemistry Halogen Physics::Atomic and Molecular Clusters Urea Molecule Physics::Atomic Physics Physics::Chemical Physics Solubility Spectroscopy
Zdroj:	Vibrational Spectroscopy. 8:53-60
ISSN:	0924-2031
DOI:	10.1016/0924-2031(94)00029-g
Popis:	The infrared bands of CO and NH stretching vibrations of urea dissolved in a series of halogen derivatives of aliphatic hydrocarbons were analyzed. From the relationship between the solubility of urea and the structure of the solvent as well as the infrared spectra it is concluded that a double hydrogen bond between one urea and one solvent molecule is formed. In this bond, the solvent molecule is donor of two hydrogen atoms of two polar CH bonds, and the CO group of urea is proton acceptor. The interaction of NH groups with XC solvent groups is predominantly determined by the valence orbital repulsion of N and X atoms, and the polarizability of the halogen atom X.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6aee4054028355857a93fe973b10754 https://doi.org/10.1016/0924-2031(94)00029-g Zobrazit plný text záznamu