Infrared Spectroscopy of M^+(CH_4)_n(H_2O)3-4 Clusters (M=Li, Na): Inducing H_2O\cdotsH_2O and H_2O\cdotsCH_4 Hydrogen Bonds in Methanated Clusters

Details Infrared Spectroscopy of M^+(CH_4)_n(H_2O)3-4 Clusters (M=Li, Na): Inducing H_2O\cdotsH_2O and H_2O\cdotsCH_4 Hydrogen Bonds in Methanated Clusters Infrared Spectroscopy of M^+(CH_4)_n(H_2O)3-4 Clusters (M=Li, Na): Inducing H_2O\cdotsH_2O and H_2O\cdotsCH_4 Hydrogen Bonds in Methanated Clusters

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mss..conferg02r&link_type=abstract

"International Symposium On Molecular Spectroscopy, 65th Meeting, Held 21-25 June, 2010 at Ohio State University. http://molspec

Physics

Mini-Symposium: Metal Containing Molecules

Scientific paper

Experiments on M^+(CH_4)_n(H_2O)3-4 (M=Li and Na) have been carried out using tandem mass spectrometry and infrared spectroscopy in the O-H stretching region from 3400 cm-1 to 3800 cm-1. We have found, for example, that a single CH_4 can induce hydrogen bonded conformers in the cases of Li^+(CH_4)_1(H_2O)_3Ar0-1, which are absent in the Li^+(H_2O)_3Ar0-1 spectra. Furthermore, upon addition of multiple CH_4 ligands, hydrogen bonding is not only maintained, but features associated with H_2O\cdotsCH_4 hydrogen bonds are more intense, indicating the affinity of CH_4 to bind to available O-H sites. Spectra of Li^+(CH_4)1-3(H_2O)_4 and Na^+(CH_4)1-3(H_2O)3-4 clusters will also be discussed, all of which exhibit the curious trait of H_2O\cdotsH_2O and H_2O\cdotsCH_4 hydrogen bonding in the presence of hydrophobic, non-polar CH_4. To better understand the nature and onset of H_2O\cdotsCH_4 hydrogen bonding, the Li^+(CH_4)_n(H_2O)1-2 spectra will be discussed.
D.J. Miller and J.M. Lisy J. Am. Chem. Soc. {130}, 15381 (2008).
D.J. Miller and J.M. Lisy J. Am. Chem. Soc. {130}, 15393 (2008).

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