Show simple item record

dc.creatorRaymonda, J. W.en_US
dc.creatorKuebler, N. A.en_US
dc.date.accessioned2006-06-15T17:16:08Z
dc.date.available2006-06-15T17:16:08Z
dc.date.issued1974en_US
dc.identifier1974-TF-8en_US
dc.identifier.urihttp://hdl.handle.net/1811/16478
dc.description$^{1}$J. W. Raymonda gratefully acknowledges the hospitality of Bell Laboratories during the summer of 1971 when much of data reported here was obtained.en_US
dc.descriptionAuthor Institution: Calspan Corporation; Bell Laboratories Murrayen_US
dc.description.abstractThe electronic absorption spectra in the range from 40 000 to 77 000 $cm^{-1}$ and the photoelectron spectra (PES) up to 20 eV have been recorded for the carboranes $1,5 - C_{2}B_{3}H_{5}, 1,6 - C_{2}B_{4}H_{6}, 2,4 - C_{2}B_{5}H_{7}$ and $4,5 - C_{2}B_{4}H_{8}$. In 1,6 - $C_{2}B_{4}H_{6}$, three Rydberg series having quantum defects of 0.54, 0.09 and 0.03 can be discerned. These all lead to the first ionization potential of 78 720 $\pm$20 $cm^{-1}$. The PES yields the same value for the first ionization potential. The optical spectrum of $4,5 - C_{2}B_{4}H_{8}$ is diffuse except for one structured transition. This has been shown to be a Rydberg transition by the effect of a high pressure blanket of nitrogen upon it. Its term value with respect to the $0 - 0$ band of the PES ($IP = 75 800 cm^{-1}$) leads to a quantum defect of 0.51, Suggesting assignment as a p-Rydberg. In $1,5 - C_{2}B_{3}H_{5}$, two possible Rydberg series leading to the first ionization potential of 73 880 $cm^{-1}$ can be located. The PES assignments will be discussed with the aid of an all electron Gaussian orbital ab initio calculation and comparison to the alkane analog bicyclo-[1.1.1]-pentane will be made. The optical spectrum of $2,4 - C_{2}B_{5}H_{7}$ is completely diffuse and no assignments are possible. The PES yields a first ionization potential of 10.66 $\pm$ 0.03 eV (86 000 $cm^{-1}$), the highest by 0.9 eV of the carboranes studied.en_US
dc.format.extent269914 bytes
dc.format.mimetypeimage/jpeg
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleELECTRONIC AND PHOTOELECTRON SPECTRA OF SOME CARBORANESen_US
dc.typearticleen_US


Files in this item

Thumbnail

Items in Knowledge Bank are protected by copyright, with all rights reserved, unless otherwise indicated.

This item appears in the following Collection(s)

Show simple item record