Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

The Rotational Spectrum, Nuclear Field Shift Effects, 195Pt Nuclear Spin-Rotation Constant, and Electric Dipole Moment of PtSi



S A. Cooke, M C. Gerry, D J. Brugh, R D. Suenram


The pure rotational spectrum of the X1Σ+ ground electronic state for 9 isotopomers of platimum monosilicide has been measured. For the most abundant isotopomer, 194pt28Si, the J=1-0 and the J=2-1 transitions were recorded up to the fourth vibrationally excited state. The data set obtained enabled a multi-isotopomer fit to a Dunham-type expression and the constants Y01, Y02, Y11, Y21 and Y31 were determined. In the process of fitting the data it was necessary to include Born-Oppenheimer breakdown correction terms and the values and significance of these terms are discussed. The nuclear spin-rotation constant, CI(195^Pt) is found to be 30.98(157) kHz in the ground vibrational state. Hyperfine structure arising from the 29Si nucleus was not observed. The measurement of Stark shifts in the rotational spectrum of PtSi has enabled the determination of the dipole moments for the 194Pt28Si and 196Pt28Si isotopomers.
Journal of Molecular Spectroscopy
No. 2


electric dipole moment, fourier-transform microwave spectrum, laser vaporization, microwave spectrum, platinum monosilicide


Cooke, S. , Gerry, M. , Brugh, D. and Suenram, R. (2004), The Rotational Spectrum, Nuclear Field Shift Effects, <sup>195</sup>Pt Nuclear Spin-Rotation Constant, and Electric Dipole Moment of PtSi, Journal of Molecular Spectroscopy (Accessed April 15, 2024)
Created January 31, 2004, Updated October 12, 2021