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Threshold ion-pair production spectroscopy of HCN.
MedLine Citation:
PMID:  16497039     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The spectroscopic technique of threshold ion-pair production spectroscopy (TIPPS) has been applied to the triatomic molecule HCN. We have recorded the total ion-pair yield and TIPP spectra for the HCN-->H(+) + CN(-) process using coherent vacuum ultraviolet excitation. From the simulation of our high-resolution TIPP spectrum we have precisely measured the HCN ion-pair threshold E(IP) (0) to be 122 244 +/- 4 cm(-1). This value could be used to determine the bond dissociation energy D(0)(H-CN) to unprecedented accuracy. Our fitting result also showed that rotationally excited instead of cold CN(-) fragment is favored as the ion-pair dissociation product in the threshold region.
Authors:
Q J Hu; Q Zhang; J W Hepburn
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of chemical physics     Volume:  124     ISSN:  0021-9606     ISO Abbreviation:  J Chem Phys     Publication Date:  2006 Feb 
Date Detail:
Created Date:  2006-02-24     Completed Date:  2007-07-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375360     Medline TA:  J Chem Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  74310     Citation Subset:  -    
Affiliation:
Department of Chemistry, University of British Columbia, Vancouver, Canada.
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