Title

Autodetachment spectroscopy of vibrationally excited acetaldehyde enolate anion, CH2CHO-

Document Type

Article

Publication Date

10-1-1992

Abstract

The autodetachment spectrum of acetaldehyde enolate anion, CH2CHO-, is recorded near 14180 cm-1 using a coaxial laserion threshold photodetachment spectrometer. The spectrum repreents transitions from ν=1 in the ν3 CCO bending mode of CH2CHO- to ν=0 in the autodetaching dipole-bound state of the anion. The 32 rotationally resolved (0, 1) hot band transitions reported here were fit to Watson's A-reduced Hamiltonian in conjunction with the previously reported (0, 0) transitions. Rotational constants for ν3 ν=1 of the ground electronic state are determined to be A=2.782(2) cm-1, B=1.3619(4) cm-1, and C=0.3147(4) cm-1. The (O, 1) band origin is 14186.928(8) cm-1, which places ω0 for the ν3 mode at 525.82(1) cm-1. © 1992.

Publication Source (Journal or Book title)

Chemical Physics

First Page

207

Last Page

213

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