THE GROUND STATE SPIN-ORBIT SPLITTING OF PtH

Loading...
Thumbnail Image

Date

1990

Journal Title

Journal ISSN

Volume Title

Publisher

Ohio State University

Research Projects

Organizational Units

Journal Issue

Abstract

We have observed several new bands in the electronic spectrum of PtH by laser excitation spectroscopy in the region $23,200-22,600 cm^{-1}$. For one band at $4368 \AA, a \Omega =3/2\leftarrow 2\leftarrow X^{2}\Delta_{5/2} (0,0)$ transition, it appears that the $\Omega^{\prime}=3/2$ state we have observed is the same upper state seen by Kaving and $co-workers^{1}$. The dispersed fluorescence spectrum of the 4368 {\AA} band includes a strong transition to a state at $\sim 3250 cm^{-1}$ above the $X^2\Delta_{5/2}$ ground state, probably the $X^{\prime\prime}2\Delta_{3/2}$. Our spin-orbit splitting is approximately 2000 $cm^{-1}$ larger than Kaving's prediction, but is consistent with recent theoretical calculations and the large atomic spin-orbit splitting of Pt. We will discuss this result as well as other progress made in the analysis of the electronic spectrum of PtH.

Description

$^{1}$ B. Kaving and R. Scullman, Can. J. Phys. 49. 2264 (1971).
Author Institution: Department of Chemistry, Massachusetts Institute of Technology

Keywords

Citation