Study of Renner–Teller, spin–orbit, and Fermi‐resonance interactions inX̃ 2Π (v1v20) levels of NCO by stimulated emission pumping spectroscopy

1992 ◽  
Vol 97 (7) ◽  
pp. 4583-4595 ◽  
Author(s):  
Ming Wu ◽  
F. J. Northrup ◽  
Trevor J. Sears
Keyword(s):  
Stimulated Emission ◽  
Fermi Resonance ◽  
Spin Orbit ◽  
Resonance Interactions

High resolution study of spin-orbit mixing and the singlet-triplet gap in chlorocarbene: Stimulated emission pumping spectroscopy of CH35Cl and CD35Cl

2008 ◽  
Vol 129 (10) ◽  
pp. 104309 ◽  
Author(s):  
Chong Tao ◽  
Calvin Mukarakate ◽  
Zack Terranova ◽  
Carlena Ebben ◽  
Richard H. Judge ◽  
...  
Keyword(s):  
High Resolution ◽  
Stimulated Emission ◽  
Spin Orbit ◽  
Resolution Study

Renner−Teller and Fermi Resonance Interactions for the v3= 1 and v7= 2 Vibronic Levels in the A2Πuand X2ΠgElectronic States of HC4H+

2011 ◽  
Vol 115 (34) ◽  
pp. 9365-9369 ◽  
Author(s):  
Ranjini Raghunandan ◽  
Fabio J. Mazzotti ◽  
Aaseef M. Esmail ◽  
John P. Maier
Keyword(s):  
Fermi Resonance ◽  
Resonance Interactions

Triethylammonium halides, Et3NHX (X = Cl, Br, I): simple structure, complex spectrum

1985 ◽  
Vol 63 (7) ◽  
pp. 1750-1758 ◽  
Author(s):  
Margaret Ann James ◽  
T. Stanley Cameron ◽  
Osvald Knop ◽  
Murray Neuman ◽  
Michael Falk
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Ir Spectra ◽  
Structure Determination ◽  
Room Temperature ◽  
Simple Structure ◽  
Fermi Resonance ◽  
Crystal Structure Determination ◽  
Complex Spectrum ◽  
Resonance Interactions

A crystal structure determination has shown that the ethyl groups in the three isostructural (P63mc, Z = 2) triethylammonium halides, Et3NHX (X = Cl, Br, I), at room temperature are orientationally disordered and the [Formula: see text] groups are linear by symmetry. The unusual extent and complexity of the NH and ND stretching absorptions in the ir spectra of all three compounds between 10 and 293 K are discussed in terms of Fermi resonance interactions. The centroid ν(NH) and ν(ND) frequencies extracted from the spectra correlate with the [Formula: see text] distances. It is shown that if Fermi resonance is the sole cause of the complexity of the stretching absorptions, then these centroids represent the ν(NH) and ν(ND) frequencies unperturbed by Fermi resonance. The centroid frequencies in the three halides are unusually low, pointing to strong [Formula: see text] hydrogen bonding.

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