Show simple item record

dc.contributor.advisorGraham, W. R. M.
dc.contributor.authorDoyle, Timothy Johnen_US
dc.date.accessioned2019-10-11T15:11:14Z
dc.date.available2019-10-11T15:11:14Z
dc.date.created1992en_US
dc.date.issued1992en_US
dc.identifieraleph-544989en_US
dc.identifierMicrofilm Diss. 573.en_US
dc.identifier.urihttps://repository.tcu.edu/handle/116099117/34214
dc.description.abstractThe first vibrational spectrum of the C$\sb2$H$\sb3$ (vinyl) radical has been identified in an FTIR study of the vacuum ultraviolet (VUV) photolysis products of ethylene (C$\sb2$H$\sb4)$ and its D- and $\sp{13}$C-substituted isotopomers and acetylene (C$\sb2$H$\sb2)$ + HI trapped in Ar at 10 K. Absorptions at 900.2 and 685.4 cm$\sp{-1}$ have been assigned to the $\nu\sb8(a\sp{\prime\prime}),$ out-of-plane wagging and the $\nu\sb7(a\sp\prime),$ in-plane asymmetric CH$\sb2$ bending - $\alpha$CH bending modes. The assignments are supported by the isotopic data and by comparison with the results of a GVB ab initio calculation by Dupuis and Wendoloski, and an MBPT(2) ab initio calculation. A similar FTIR study of the products of the VUV photolysis of acetylene (C$\sb2$H$\sb2)$ and 1,3-butadiene (C$\sb4$H$\sb6)$ trapped in solid Ar has resulted in the first identification of a vibration of the C$\sb6$H (hexatriynyl) radical at 1953.4 cm$\sp{-1}.$ Various D and $\sp{13}$C isotopomers have been observed. The complex, overlapping spectra resulting from partial $\sp{13}$C substitution have been fitted using a force constant adjustment calculation and support the assignment of the 1953.4 cm$\sp{-1}$ absorption to a C$\equiv$C stretching fundamental of linear C$\sb6$H.
dc.format.extentxi, 80 leaves : illustrationsen_US
dc.format.mediumFormat: Printen_US
dc.language.isoengen_US
dc.relation.ispartofTexas Christian University dissertationen_US
dc.relation.ispartofAS38.D69en_US
dc.subject.lcshRadicals (Chemistry)--Spectraen_US
dc.subject.lcshVibrational spectraen_US
dc.subject.lcshFourier transform infrared spectroscopyen_US
dc.titleFirst detection of vibrational spectra of the vinyl and hexatriynyl radicalsen_US
dc.typeTexten_US
etd.degree.departmentDepartment of Physics
etd.degree.levelDoctoral
local.collegeCollege of Science and Engineering
local.departmentPhysics and Astronomy
local.academicunitDepartment of Physics
dc.type.genreDissertation
local.subjectareaPhysics and Astronomy
dc.identifier.callnumberMain Stacks: AS38 .D69 (Regular Loan)
dc.identifier.callnumberSpecial Collections: AS38 .D69 (Non-Circulating)
etd.degree.nameDoctor of Philosophy
etd.degree.grantorTexas Christian University


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record