{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/18977"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/18977","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Vibrational predissociation spectroscopy of hydrogen-bonded complexes in the 10 micron region","abstract":"Vibrational predissociation spectroscopy of isotopomers of (CH$\\sb3$OH)$\\sb2$ and Ar(CH$\\sb3$OH) were recorded in the 10 micron region, where the C-O stretching transition is located. Using the beam depletion technique, spectra were recorded for (CH$\\sb3$OH)$\\sb2$, (CH$\\sb3$OD)$\\sb2$,(CD$\\sb3$OD)$\\sb2$,(CH$\\sb3$OH)(CH$ \\sb3$OD),(CH$\\sb3$OD)(CD$\\sb3$OD),(CH$\\sb3$OX)Ar (X = H,D) and (CD$\\sb3$OD)Ar. It is observed that in the mixed dimers, complexes, the measured C-O transition frequencies are unchanged from their respective monomers. Time of flight measurements were also conducted to determine the translational temperature of the complexes. A band contour analysis was done to estimate the homogeneous and inhomogeneous contribution to the observed linewidths. All of the complexes except the ones containing CH$\\sb3$OD methanol had a homogeneous contribution of no greater than 1 cm$\\sp{-1}$. The complexes involving CH$\\sb3$OD have a homogeneous width of less than 0.5 cm$\\sp{-1}$. A transition dipole coupling model was studied to reveal that only 1 cm$\\sp{-1}$ out of the 25 cm$\\sp{-1}$ of splitting observed in (CH$\\sb3$OH)$\\sb2$ is due to dipole-dipole interactions. The model does not predict the isotopic shift in (CH$\\sb3$OH)(CH$\\sb3$OD) for either the donor or acceptor C-O stretching transition. Integral dissociation cross sections were also measured for the different species, with good agreement with a previous measurement by another group for (CH$\\sb3$OH)$\\sb2$. The measured integral dissociation cross sections for the various deuterated dimers decreased with the number of deuterium atoms within the complex. Preliminary studies of (CH$\\sb3$NH$\\sb2$)$\\sb2$, Ar(CH$\\sb3$NH$\\sb2$), (CH$\\sb3$CH$\\sb2$OH)$\\sb2$, Ar(CH$\\sb3$CH$\\sb2$OH), ((CH$\\sb3$)$\\sb3$COH)$\\sb2$, Ar(1,4-dioxane), (1,4-dioxane)$\\sb2$, Ar(d$\\sb6$-acetone) and (d$\\sb6$-acetone)$\\sb2$ were also carried out in the 10 micron region.","abstract_html":"Vibrational predissociation spectroscopy of isotopomers of (CH$\\sb3$OH)$\\sb2$ and Ar(CH$\\sb3$OH) were recorded in the 10 micron region, where the C-O stretching transition is located. Using the beam depletion technique, spectra were recorded for (CH$\\sb3$OH)$\\sb2$, (CH$\\sb3$OD)$\\sb2$,(CD$\\sb3$OD)$\\sb2$,(CH$\\sb3$OH)(CH$ \\sb3$OD),(CH$\\sb3$OD)(CD$\\sb3$OD),(CH$\\sb3$OX)Ar (X = H,D) and (CD$\\sb3$OD)Ar. It is observed that in the mixed dimers, complexes, the measured C-O transition frequencies are unchanged from their respective monomers. Time of flight measurements were also conducted to determine the translational temperature of the complexes. A band contour analysis was done to estimate the homogeneous and inhomogeneous contribution to the observed linewidths. All of the complexes except the ones containing CH$\\sb3$OD methanol had a homogeneous contribution of no greater than 1 cm$\\sp{-1}$. The complexes involving CH$\\sb3$OD have a homogeneous width of less than 0.5 cm$\\sp{-1}$. A transition dipole coupling model was studied to reveal that only 1 cm$\\sp{-1}$ out of the 25 cm$\\sp{-1}$ of splitting observed in (CH$\\sb3$OH)$\\sb2$ is due to dipole-dipole interactions. The model does not predict the isotopic shift in (CH$\\sb3$OH)(CH$\\sb3$OD) for either the donor or acceptor C-O stretching transition. Integral dissociation cross sections were also measured for the different species, with good agreement with a previous measurement by another group for (CH$\\sb3$OH)$\\sb2$. The measured integral dissociation cross sections for the various deuterated dimers decreased with the number of deuterium atoms within the complex. Preliminary studies of (CH$\\sb3$NH$\\sb2$)$\\sb2$, Ar(CH$\\sb3$NH$\\sb2$), (CH$\\sb3$CH$\\sb2$OH)$\\sb2$, Ar(CH$\\sb3$CH$\\sb2$OH), ((CH$\\sb3$)$\\sb3$COH)$\\sb2$, Ar(1,4-dioxane), (1,4-dioxane)$\\sb2$, Ar(d$\\sb6$-acetone) and (d$\\sb6$-acetone)$\\sb2$ were also carried out in the 10 micron region.","abstract_has_math":true,"creators":["LaCosse, Jeffrey Paul"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Lisy, James M."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T11:53:12Z","date_published":"2011-05-07T11:53:12Z","updated_at":"2026-07-22T22:25:12Z","subjects":["Chemistry, Physical","Physics, Molecular"],"languages":["eng"],"rights":["Copyright 1991 LaCosse, Jeffrey Paul"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9124447","(UMI)AAI9124447"],"render_values":[{"text":"AAI9124447","href":null,"code":true},{"text":"(UMI)AAI9124447","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/18977","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Lisy, James M."]},{"key":"dc:creator","label":"Author","values":["LaCosse, Jeffrey Paul"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T11:53:12Z","1991"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chemistry, Physical","Physics, Molecular"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1991 LaCosse, Jeffrey Paul"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9124447","(UMI)AAI9124447","http://hdl.handle.net/2142/18977"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Vibrational predissociation spectroscopy of isotopomers of (CH$\\sb3$OH)$\\sb2$ and Ar(CH$\\sb3$OH) were recorded in the 10 micron region, where the C-O stretching transition is located. Using the beam depletion technique, spectra were recorded for (CH$\\sb3$OH)$\\sb2$, (CH$\\sb3$OD)$\\sb2$,(CD$\\sb3$OD)$\\sb2$,(CH$\\sb3$OH)(CH$ \\sb3$OD),(CH$\\sb3$OD)(CD$\\sb3$OD),(CH$\\sb3$OX)Ar (X = H,D) and (CD$\\sb3$OD)Ar. It is observed that in the mixed dimers, complexes, the measured C-O transition frequencies are unchanged from their respective monomers. Time of flight measurements were also conducted to determine the translational temperature of the complexes. A band contour analysis was done to estimate the homogeneous and inhomogeneous contribution to the observed linewidths. All of the complexes except the ones containing CH$\\sb3$OD methanol had a homogeneous contribution of no greater than 1 cm$\\sp{-1}$. The complexes involving CH$\\sb3$OD have a homogeneous width of less than 0.5 cm$\\sp{-1}$. A transition dipole coupling model was studied to reveal that only 1 cm$\\sp{-1}$ out of the 25 cm$\\sp{-1}$ of splitting observed in (CH$\\sb3$OH)$\\sb2$ is due to dipole-dipole interactions. The model does not predict the isotopic shift in (CH$\\sb3$OH)(CH$\\sb3$OD) for either the donor or acceptor C-O stretching transition. Integral dissociation cross sections were also measured for the different species, with good agreement with a previous measurement by another group for (CH$\\sb3$OH)$\\sb2$. The measured integral dissociation cross sections for the various deuterated dimers decreased with the number of deuterium atoms within the complex. Preliminary studies of (CH$\\sb3$NH$\\sb2$)$\\sb2$, Ar(CH$\\sb3$NH$\\sb2$), (CH$\\sb3$CH$\\sb2$OH)$\\sb2$, Ar(CH$\\sb3$CH$\\sb2$OH), ((CH$\\sb3$)$\\sb3$COH)$\\sb2$, Ar(1,4-dioxane), (1,4-dioxane)$\\sb2$, Ar(d$\\sb6$-acetone) and (d$\\sb6$-acetone)$\\sb2$ were also carried out in the 10 micron region.","Made available in DSpace on 2011-05-07T11:53:12Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9124447.pdf: 6081652 bytes, checksum: 8b54352e81737769b833f75201230628 (MD5) Previous issue date: 1991","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:33:49Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:12:39-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","Open Restriction set for Item 19112 on 2020-06-01T21:02:58Z with date null by bran3@illinois.edu.","Open Restriction set for Item 19112 on 2020-06-01T21:03:38Z with date null by bran3@illinois.edu.","Open"]},{"key":"dc:title","label":"Title","values":["Vibrational predissociation spectroscopy of hydrogen-bonded complexes in the 10 micron region"]}]}],"canonical_facts":{"dc:contributor":["Lisy, James M."],"dc:creator":["LaCosse, Jeffrey Paul"],"dc:date":["2011-05-07T11:53:12Z","1991"],"dc:description":["Vibrational predissociation spectroscopy of isotopomers of (CH$\\sb3$OH)$\\sb2$ and Ar(CH$\\sb3$OH) were recorded in the 10 micron region, where the C-O stretching transition is located. Using the beam depletion technique, spectra were recorded for (CH$\\sb3$OH)$\\sb2$, (CH$\\sb3$OD)$\\sb2$,(CD$\\sb3$OD)$\\sb2$,(CH$\\sb3$OH)(CH$ \\sb3$OD),(CH$\\sb3$OD)(CD$\\sb3$OD),(CH$\\sb3$OX)Ar (X = H,D) and (CD$\\sb3$OD)Ar. It is observed that in the mixed dimers, complexes, the measured C-O transition frequencies are unchanged from their respective monomers. Time of flight measurements were also conducted to determine the translational temperature of the complexes. A band contour analysis was done to estimate the homogeneous and inhomogeneous contribution to the observed linewidths. All of the complexes except the ones containing CH$\\sb3$OD methanol had a homogeneous contribution of no greater than 1 cm$\\sp{-1}$. The complexes involving CH$\\sb3$OD have a homogeneous width of less than 0.5 cm$\\sp{-1}$. A transition dipole coupling model was studied to reveal that only 1 cm$\\sp{-1}$ out of the 25 cm$\\sp{-1}$ of splitting observed in (CH$\\sb3$OH)$\\sb2$ is due to dipole-dipole interactions. The model does not predict the isotopic shift in (CH$\\sb3$OH)(CH$\\sb3$OD) for either the donor or acceptor C-O stretching transition. Integral dissociation cross sections were also measured for the different species, with good agreement with a previous measurement by another group for (CH$\\sb3$OH)$\\sb2$. The measured integral dissociation cross sections for the various deuterated dimers decreased with the number of deuterium atoms within the complex. Preliminary studies of (CH$\\sb3$NH$\\sb2$)$\\sb2$, Ar(CH$\\sb3$NH$\\sb2$), (CH$\\sb3$CH$\\sb2$OH)$\\sb2$, Ar(CH$\\sb3$CH$\\sb2$OH), ((CH$\\sb3$)$\\sb3$COH)$\\sb2$, Ar(1,4-dioxane), (1,4-dioxane)$\\sb2$, Ar(d$\\sb6$-acetone) and (d$\\sb6$-acetone)$\\sb2$ were also carried out in the 10 micron region.","Made available in DSpace on 2011-05-07T11:53:12Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9124447.pdf: 6081652 bytes, checksum: 8b54352e81737769b833f75201230628 (MD5) Previous issue date: 1991","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:33:49Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:12:39-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","Open Restriction set for Item 19112 on 2020-06-01T21:02:58Z with date null by bran3@illinois.edu.","Open Restriction set for Item 19112 on 2020-06-01T21:03:38Z with date null by bran3@illinois.edu.","Open"],"dc:identifier":["AAI9124447","(UMI)AAI9124447","http://hdl.handle.net/2142/18977"],"dc:language":["eng"],"dc:rights":["Copyright 1991 LaCosse, Jeffrey Paul"],"dc:subject":["Chemistry, Physical","Physics, Molecular"],"dc:title":["Vibrational predissociation spectroscopy of hydrogen-bonded complexes in the 10 micron region"],"dc:type":["text"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:12Z"}