Document Detail


Magnetic Circular Dichroism and Absorption Spectra of Methylidyne in a Krypton Matrix.
MedLine Citation:
PMID:  21721516     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Electronic absorption and magnetic circular dichroism spectra are reported for the A 2Δ, B 2Σ- and C 2Σ+ ← X 2Π transitions of methylidyne (CH) radicals isolated in a Kr matrix at cryogenic temperatures. The results are interpreted in the framework of a model in which the X 2Π term is split by combination of spin-orbit and crystal-field interactions with the atoms of the host matrix. Analysis of the zeroth moments of the spectra yields an empirical spin-orbit coupling constant AΠ = 11 ± 2 cm-1 and orbital reduction factor κ = 0.26 ± 0.05, corresponding to a crystal-field splitting of VΠ = 43 ± 10 cm-1 for the X 2Π term. For the A 2Δ excited-state term, analysis of the first MCD moments gives a spin-orbit coupling constant of AΔ = 4.4 ± 0.9 cm-1.
Authors:
Jeremy J Harrison; Bryce Elliot Williamson
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-1
Journal Detail:
Title:  The journal of physical chemistry. A     Volume:  -     ISSN:  1520-5215     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9890903     Medline TA:  J Phys Chem A     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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