Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 309, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2020.113147
Keywords
Solid-liquid phase equilibrium; Solvent effect; Thermodynamic analysis; Intermolecular interactions; 1,3-Di-o-tolylguanidine
Funding
- China Postdoctoral Science Foundation [2018M641651]
- National Natural Science Foundation of China [21706183, 21621004]
Ask authors/readers for more resources
The crystal structure of 1,3-Di-o-tolylguanidine (DOTG) were investigated, as well as the thermodynamic properties about the solid-liquid phase equilibrium. The intermolecular interactions examined by Hirshfeld surface analysis demonstrate that the N-H center dot center dot center dot N and C-H center dot center dot center dot C interactions are dominant in the solid-state structure of DOTG. The solubility of DOTG in thirteen pure solvents (ethanol, 1-propanol, 2-propanol, 1-butanol, isobutanol, 2-butanol, 1-pentanol, propyl acetate, isopropyl acetate, acetone, butanone, acetonitrile. 1,4-dioxane) was measured by a gravimetric method from 283.15 K to 323.15 K at atmospheric pressure. According to the experimental results, the solubility of DOTG in all solvents increase with the increase of temperature. The determined solubility data were correlated using the Apelblat equation, lambda h equation, van't Hoff equation and the NRTi. model. Additionally. the effects of solvent properties on the solubility of DOTG were discussed in terms of solvent polarity, hydrogen bond and cohesive energy density. Furthermore, the mixing thermodynamic properties of DOTG were studied in selected solvents based on the NRTL model, showing that the process of DOTG dissolving is spontaneous and entropy-driving. (C) 2020 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available