A spectroscopic study of CaOCH3 using the pump/probe microwave and the molecular beam/optical Stark techniques

Kei Ichi C Namiki, J. Scott Robinson, Timothy Steimle

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The Stark effect on the qR22(0,0.5) (ν=17682.9251cm-1) and qP11(0,1.5) (ν=17682.1966cm-1) branch features of the (0,0) B2A1-X2A1 band system of calcium methoxide, CaOCH3, was measured and analyzed to give the magnitude of the permanent electronic dipole moments, μ, of 1.58(8) D and 1.21(5) D for the X2A1 and B2A1 states, respectively. The dipole moments are compared with other monovalent calcium compounds and those predicted from a simple electrostatic model. Pure rotational transitions in the X2A1 state were recorded using the pump/probe microwave-optical double resonance technique. The proton magnetic hyperfine splitting pattern confirms a C3v symmetry of the ground electronic state. The determined Fermi contact and dipolar parameters are: aF=-0.421(27)MHz; Taa=1.070(45)MHz, and Tbb-Tcc=0.292(47)MHz. The latter parameter is associated with the lifting of the K-degeneracy of this symmetric top molecule and mixing the I0=1/2 and I0=3/2 levels.

Original languageEnglish (US)
Pages (from-to)5283-5289
Number of pages7
JournalJournal of Chemical Physics
Volume109
Issue number13
DOIs
StatePublished - 1998

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microwave probes
Molecular beams
Dipole moment
molecular beams
dipole moments
calcium compounds
Calcium Compounds
Microwaves
Pumps
pumps
Stark effect
Electronic states
electronics
Protons
calcium
electric contacts
Electrostatics
electrostatics
Calcium
Molecules

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

A spectroscopic study of CaOCH3 using the pump/probe microwave and the molecular beam/optical Stark techniques. / Namiki, Kei Ichi C; Robinson, J. Scott; Steimle, Timothy.

In: Journal of Chemical Physics, Vol. 109, No. 13, 1998, p. 5283-5289.

Research output: Contribution to journalArticle

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