✦ LIBER ✦

Pulse Pyrolysis Infrared Laser Jet Spectroscopy of Chloroketene

✍ Scribed by Zhuan Liu; Ray J. Livingstone; Paul B. Davies

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 159 KB
Volume: 201
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.2000.8083

No coin nor oath required. For personal study only.

✦ Synopsis

The short-lived molecule chloroketene (ClHCCO) was generated by the pyrolysis of chloroacetyl chloride in a hightemperature nozzle and the infrared laser-absorption spectrum of its 2 fundamental band was measured between 2153 and 2161 cm Ϫ1 . The spectrum was greatly simplified by comparison with a room-temperature spectrum enabling 230 lines of the 35 ClHCCO isotopomer to be assigned and measured. A least-squares fit of these transitions yielded accurate molecular parameters for the v 2 ϭ 1 state using ground state constants from microwave spectroscopy. The 2 band origin of 35 ClHCCO is 2157.19238(16) cm Ϫ1 . A comparison of simulated and experimental spectra showed that the rotational temperature of the jet spectrum was around 35 K.

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