Chowdhury, P. K. ; Vatsa, R. K. ; Kumar, Awadhesh ; Rama Rao, K. V. S. ; Mittal, J. P. (1992) CO2 laser-induced photolysis of spirohexane: time resolved observation of vibrationally excited 1,3-butadiene Spectrochimica Acta Part A: Molecular Spectroscopy, 48 (11-12). pp. 1693-1699. ISSN 0584-8539
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/058485...
Related URL: http://dx.doi.org/10.1016/0584-8539(92)80242-O
Abstract
Vibrationally excited spirohexane (SHX) generated in CO2 laser irradiation undergoes photolysis producing ethylene, 1,3-butadiene and a C4 compound as major products. Collisional energy pooling plays a major role in the multiphoton excitation process. Time-resolved formation of 1,3-butadiene is monitored by UV absorption from which the unimolecular rate constant for SHX dissociation is found to be 5.6 × 105 s-1. A red shift of 4O nm observed in the transient UV absorption spectrum has been assigned to nascent 1,3-butadiene, which suggests that vibrationally hot 1,3-butadiene molecules are formed. The effects of laser energy fluence and pressure of SF6 as a sensitizer on dissociation yield are also investigated.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 25841 |
| Deposited On: | 04 Dec 2010 11:31 |
| Last Modified: | 08 Jun 2011 05:02 |
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