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INFRARED SPECTROSCOPY AND PHOTOCHEMISTRY OF NITROMETHANE ADSORBED ON ALKALI HALIDE FILMS: CONFORMERS AND QUENCHING

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/14074

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dc.creator Green, Toni en_US
dc.creator Jaramillo, Angela en_US
dc.creator Baumann, C. A. en_US
dc.date.accessioned 2006-06-15T15:47:25Z
dc.date.available 2006-06-15T15:47:25Z
dc.date.issued 1997 en_US
dc.identifier 1997-TE-11 en_US
dc.identifier.uri http://hdl.handle.net/1811/14074
dc.description Author Institution: Department of Chemistry, University of Scranton en_US
dc.description.abstract Nitromethane was adsorbed at low temperature onto sublimited alkali halide films. We have observed two conformational isomers on these surfaces, manifest as a temperature-dependent splitting of the asymmetric C-H stretching modes. The energy difference and barrier height to interconversion between these conformations were determined for molecules adsorbed on NaCl, NabR, KCL, and KBr films over temperatures ranging from 12K to 160 K. Irradiation of the adsorbate at wavelengths above 250 nm does not yield any observable photoproducts, while irradiation using wavelengths below 250 nm produces a variety of photoproduct species. The surface apparently has little effect on the $\pi-\pi^{*}$ (198nm gas phase) photochemistry, but quenches the $n -\pi^{*}$ photochemistry (singlet-singlet: 270 nm; singlet-triplet: 326nm) to an undetectable level. en_US
dc.format.extent 106063 bytes
dc.format.mimetype image/jpeg
dc.language.iso English en_US
dc.title INFRARED SPECTROSCOPY AND PHOTOCHEMISTRY OF NITROMETHANE ADSORBED ON ALKALI HALIDE FILMS: CONFORMERS AND QUENCHING en_US
dc.type article en_US