Pr

140.91 amu

dimer vibrational frequency = 244.9 cm-1

dimer force constant = 2.49 mdyne/A

References

Absorption, Excitation and Resonance Raman spectra

of Ce2, Pr2 and Nd2

Xiaole Shen, Li Fang,, Xiaoyu Chen and John R. Lombardi

J. Chem. Phys., To be published

Abstract

We report the absorption, resonance Raman and excitation spectra of mass selected cerium, praseodymium, and neodymium dimer in Argon matrices. Absorption bands were found for each sample. The excitation profiles give more sensitive detail and resemble absorption spectra. Resonance Raman spectra give single progression for which Ce2: we = 245.4 ± 4.2 cm-1, Pr2: we =244.9 ± 1.2 cm-1, and Nd2: we=148.0 ± 1.9 cm-1, wexe=0.7 ± 0.4 cm-1. Comparison among lanthanide dimers is discussed.


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