Issue 8, 2000

The ([B with combining tilde] 2A′←[X with combining tilde]  2A′) laser induced fluorescence excitation spectrum of DCO in a supersonic jet expansion

Abstract

The laser induced fluorescence (LIF) excitation spectrum of DCO ([B with combining tilde] 2A′←[X with combining tilde] 2A′) has been investigated in a supersonic free jet expansion. Eleven vibrational bands including the origin band were observed in the energy range from 38600 to 42500 cm−1. The band intensities were found to decrease rapidly with increasing excitation in the [B with combining tilde] state due to fast predissociation. High resolution spectra were recorded for the (000), (001), (010) and (100) vibrational bands to determine precise fundamental vibrational term energies and rotational constants and spin–rotation constants of the [B with combining tilde] state. The data were used to derive the following structural parameters for DCO ([B with combining tilde]): r(D–C)=1.121(6) Å, r(C–O)=1.371(1) Å and ∠(DCO)=105.1(2)°.

Article information

Article type
Paper
Submitted
23 Dec 1999
Accepted
21 Feb 2000
First published
24 Mar 2000

Phys. Chem. Chem. Phys., 2000,2, 1653-1657

The ([B with combining tilde] 2A′←[X with combining tilde]  2A′) laser induced fluorescence excitation spectrum of DCO in a supersonic jet expansion

J. Gripp, A. Kuczmann, C. Stöck, F. Temps and A. Tröllsch, Phys. Chem. Chem. Phys., 2000, 2, 1653 DOI: 10.1039/A910318J

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