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Updated: Jun 13, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
Spectroscopic identification of water-propane interaction: implications for clathrate nucleation
Tuan Hoang Vu1, Sarah Dai Kälin, Mary Jane Shultz
1Pearson Research Laboratory, Department of Chemistry, Tufts University, Medford, Massachusetts 02155, USA.
Abstract:
Propane is one of several hydrocarbons known to form a clathrate hydrate. To probe interactions leading to clathrate nucleation, the water-propane interaction is investigated in carbon tetrachloride with infrared spectroscopy. Isotopic substitution provides compelling evidence that the water-propane interaction occurs between the propane methylene hydrogen atoms and the water lone pair. In addition, interaction between propane and water results in clustering of water molecules, a clustering that is identified by the appearance of a peak between the symmetric and asymmetric stretches of water.
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