Structure of Aqueous Solutions of Acetonitrile Investigated by Acoustic and Positron Annihilation Measurements

Autor:	S. Koziol, Andrzej Baranowski, Jacek Gliński, Kazimierz Jerie, Andrzej Burakowski
Rok vydání:	2005
Předmět:	Materials science Aqueous solution Annihilation Solvation General Physics and Astronomy Thermodynamics Positronium chemistry.chemical_compound Volume (thermodynamics) chemistry Yield (chemistry) Atomic physics Acetonitrile Positron annihilation
Zdroj:	Scopus-Elsevier ResearcherID
ISSN:	1898-794X 0587-4246
DOI:	10.12693/aphyspola.107.826
Popis:	We report the results of acoustic and positron annihilation measurements in aqueous solutions of acetonitrile (CH3CN). Hydrophobicity of the solute is discussed, as well as the possibility of describing the title system in terms of hydrophobic solvation. The concept of Levay et al. of calculating the “ideal” positronium lifetimes is applied, basing on the mean volume of cavities (holes) in liquid structure available for positronium pseudoatom. The same calculations performed using the Tao model of annihilation yield very different results. It can be concluded that either acetonitrile forms with water clathrate-like hydrates of untypical architecture, or it is too weak hydrophobic agent to form clathrate-like hydrates at all. The former interpretation seems to be more probable.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6b8f80539135c037f982aee28b16803 https://doi.org/10.12693/aphyspola.107.826 Zobrazit plný text záznamu