TRANSITION-METAL DIATOMICS: GROUND STATE PROPERTIES OF MnNi, MnPd, and MnPt

$^{1}$ P. J. Van Zee and W. Weltner, Jr., Chem. Phye. Lett. 150, 329 (1988). $^{2}$ M. Cheeseman, R. J. Van Zee, and W. Weltner, Jr., High Temp. Sci. 25, 143 (1988).Author Institution: Department of Chemistry, University of FloridaThese isovalent, 17 valence-electron, molecules were found to have ground states $x^{6}\Sigma (MnNi), X^{4}\Sigma$, (MnPd and MnPt). This was established via electron-spin-resonance spectroscopy in noon and argon matrices at 4K. Hyperline interaction with 55Mn was observed for all molecules and also 105 Pd in the case of MnPd. The electronic and magnetic properties of these molecules will be discussed and comparison made with the 13 valence-electron $(X^{2}\Sigma, ScNi,...^{1})$ and 15 valence-electron $(X^{4}\Sigma, VN1,\ldots^{2})$ serie