OSU Navigation Bar

The Ohio State University University Libraries Knowledge Bank

QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/31143

Show full item record

Files Size Format View
abstract.gif 15.64Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Ohio_State_ver093.ppt 879Kb Microsoft PowerPoint View/Open
Slide1.GIF 15.14Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide2.GIF 16.03Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide3.GIF 11.36Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide4.GIF 28.98Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide5.GIF 12.14Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide6.GIF 11.27Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide7.GIF 9.119Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide8.GIF 13.16Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide9.GIF 19.25Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide10.GIF 13.79Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide11.GIF 14.75Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide12.GIF 14.31Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Slide13.GIF 13.18Kb GIF image Thumbnail of QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR

Title: QUANTITATIVE IR SPECTRA AND VIBRATIONAL ASSIGNMENTS OF CH$_2$I$_2$, AN ATMOSPHERIC AEROSOL PRECURSOR
Creators: Johnson, T. J.; Masiello, Tony; Sharpe, Steven W.
Issue Date: 2006
Abstract: \maketitle As part of the Northwest Infrared (NWIR) database of quantitative infrared spectra, we have recently completed quantitative spectra of diiodomethane, CH$_2$I$_2$. Photolysis of this molecule in the presence of ozone, O$_3$, has been suggested as an immediate precursor to new particle formation over the oceans, particularly in coastal areas. Combined with the quantitative medium (0.1 cm$^{-1}$) resolution vapor-phase IR spectra, liquid-phase IR and FT-Raman spectra, as well as \it{ab initio} \rm calculations have been used to update and extend the vibrational assignments of earlier workers. Two strong b$_2$ symmetry A-type bands at 584 and 1114 cm$^{-1}$ are observed, but are not resolved at 760 Torr and appear as B-type. In contrast, the b$_1$ symmetry C-type bands near 5953, 4426 and 3073 cm$^{-1}$ are resolved with rotational structure, including Q-branches with widths $<$ 1 cm$^{-1}$. Potential use of these bands for atmospheric monitoring will be discussed.
URI: http://hdl.handle.net/1811/31143
Other Identifiers: 2006-TG-14
Bookmark and Share