Decreased structure on dissolving methane in water

Autor:	Jefferson L. Creek, Carolyn A. Koh, N.H. Aldiwan, Piers Buchanan, Alan K. Soper
Rok vydání:	2005
Předmět:	chemistry.chemical_classification chemistry.chemical_compound Temperature and pressure chemistry Hydrogen isotope Inorganic chemistry Neutron diffraction General Physics and Astronomy Physical and Theoretical Chemistry Local structure Dissolution Methane Alkyl
Zdroj:	Chemical Physics Letters. 415:89-93
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2005.08.064
Popis:	There is a widely held view that hydrophobic entities such as alkanes and alkyl head groups enhance the local structure of water (greater tetrahedrality) when dissolved in it. The idea stems from an early paper by Frank and Evans who speak about ice-like structures forming around hydrophobic entities in solution. Here, we probe directly for the first time the structure of water in a methane–water solution using neutron diffraction with hydrogen isotope substitution. We find no evidence for enhanced water structure. If anything the structure is marginally less tetrahedral than in pure water at the same temperature and pressure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::34358ec9c83539059a5d7510126600d6 https://doi.org/10.1016/j.cplett.2005.08.064 Zobrazit plný text záznamu Full Text from ScienceDirect