Browsing by Author "Watson, J. K. G."

Now showing 1 - 1 of 1

The v(7), v(8), and v(11) bands of propynal, C(2)HCHO, in the 650 cm(-1) region
(2008-12-01)
McKellar, A. R. W.
;
Watson, J. K. G.
;
Chu, Li-Kang
;
Lee, Yuan-Pern
;
應用化學系
The infrared spectrum of propynal, C(2)HCHC, is studied at high resolution (0.003 cm(-1)) in the range 570640 cm(-1). The relatively intense v(11) (C equivalent to C-H out-of-plane bend, 693 cm(-1)) and v(7) (C equivalent to C-H in-plane bend, 651 cm(-1)) fundamental bands are linked by a strong a-type Coriolis interaction. The somewhat weaker v(8) (CCO in-plane bend, 614 cm(-1)) fundamental has a significant Fermi-type interaction with the "dark" background state 3v(9) (similar to 618 cm(-1)). About 1400 lines are assigned and analyzed in terms of a four-state fit in order to obtain accurate band origins, rotational and centrifugal distortion parameters, and Fermi and Coriolis interaction parameters. This represents the first systematic high-resolution infrared study of propynal. Crown Copyright (C) 2008 Published by Elsevier Inc. All rights reserved.