Comparisons are presented of experimental and theoretical studies of the rotationally inelastic scattering of CD 3 radicals with H 2 and D 2 collision partners at respective collision energies of 680 ± 75 and 640 ± 60 cm -1. Close-coupling quantum-mechanical calculations performed using a newly constructed ab initio potential energy surface (PES) provide initial-to-final CD 3 rotational level (n, k → n′, k′) integral and differential cross sections (ICSs and DCSs). The
We report the first spectroscopic study of a complex consisting of a rare earth atom in combination with ammonia. Using two-color resonance-enhanced multiphoton ionization (REMPI) spectroscopy, the lowest energy electronic transition of YbNH 3 has been found in the near-infrared. The spectrum arises from a spin-forbidden transition between the 1 A 1 ground electronic state and the lowest 3 E excited electronic state. The transition is metal centered and approximately correlates with the Yb 6s6p 3 P ← 6s 2 1 S transition. The observation of clear spin-orbit structure in the spectrum confirms the C 3v symmetry of YbNH 3 . Vibrational structure is also observed in the REMPI spectrum, which is dominated by excitation of the Yb-N stretching vibration.
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