Theoretical and experimental approach on investigation of ethylurea-water clusters
Author:
Kazachenko Aleksandr S.12, Holikulov Utkirjon3, Issaoui Noureddine4, Al-Dossary Omar M.5, Ponomarev Ilya S.12, Kazachenko Anna S.12, Akman Feride6, Bousiakou Leda G.7
Affiliation:
1. Siberian Federal University , pr. Svobodny, 79 , Krasnoyarsk , 660041 Russia 2. Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences , Akademgorodok, 50/24 , Krasnoyarsk , 660036 Russia 3. Department of Optics and Spectroscopy , Samarkand State University , 15 University Blvd., 140104 , Samarkand , Uzbekistan 4. Laboratory of Quantum and Statistical Physics, Faculty of Sciences , University Monastir , 5079 , Monastir , Tunisia 5. Department of Physics and Astronomy, College of Science , King Saud University , P.O. Box 2455 , Riyadh 11451 , Saudi Arabia 6. Vocational School of Food, Agriculture and Livestock , University of Bingöl , Bingöl 12000 , Türkiye 7. IMD Laboratories Co, R&D Section, Lefkippos Technology Park , NCSR Demokritos P.O. Box 60037, 15130 Athens , Greece
Abstract
Abstract
Alkylated urea derivatives have found wide application as starting materials for the production of many drugs, including anticancer drugs, as well as in many other areas. In this work, we studied ethylurea crystalline hydrates using a complex of theoretical and experimental methods. The nature of the intermolecular interactions between ethylurea and water molecules is investigated using topological analyses such as atoms in molecules (AIM), non-covalent interaction (NCI), reduced density gradient (RDG), electron localized functions (ELF), and localized orbital locator (LOL). The hydrogen bond energy is in the range of 1.1295–14.4327 kcal/mol. Also, a highly correlated parabolic relationship between topological parameters (E
HB, ρ, and ∇2
ρ) and H-bond length was determined. According to RDG data, with an increase in the number of water molecules in ethylurea clusters, the area corresponding to hydrogen bonds increases. The initial ethylurea and its crystalline hydrate were studied by FTIR spectroscopy and X-ray diffraction. The introduction of water molecules into the ethylurea crystal was proved by IR spectroscopy by the appearance of the corresponding absorption bands. X-ray diffraction showed that the initial ethylurea has intense peaks at 11.2, 16.8, 21.4, 22.24, 25.06, 25.78° 2Ɵ, the intensity of which changes when water molecules are introduced into the crystal.
Funder
King Saud University
Publisher
Walter de Gruyter GmbH
Subject
Physical and Theoretical Chemistry
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