Far‐infrared vibration–rotation‐tunneling spectroscopy of Ar–NH3: Intermolecular vibrations and effective angular potential energy surface
نویسندگان
چکیده
منابع مشابه
Far-infrared vibration-rotation-tunneling spectroscopy of Ar-NH3: Intermolecular vibrations and effective angular potential energy surface
Two new intermolecular vibration-rotation-tunneling (VRT) bands of Ar-NH3 have been measured using tunable far infrared laser spectroscopy. We have unambiguously assigned these and a previously measured FIR band [ Gwo et al., Mol. Phys. 71,453 ( 1990) ] as II ( l,,n = 0) +B(O,,n = 0), 2( l,,n = 0) +-Z(O,,n = 0), and B(O,,n = 1) +-Z(O,,n = 0). The three upper states of these are found to be stro...
متن کاملTheoretical studies of the N2O van der Waals dimer: ab initio potential energy surface, intermolecular vibrations and rotational transition frequencies.
Theoretical studies of the potential energy surface and bound states were performed for the N(2)O dimer. A four-dimensional intermolecular potential energy surface (PES) was constructed at the CCSD(T) level with aug-cc-pVTZ basis set supplemented with bond functions. Three co-planar local minima were found on this surface. They correspond to a nonpolar isomer with slipped-antiparallel planar st...
متن کاملAb Initio Intermolecular Potential Energy Surface of CO2-C2H2 Complex.
A new four-dimensional potential energy surface for CO2-C2H2 complex has been calculated by the ab initio methods at MP2/cc-pVXZ and MP2/aug-cc-pVXZ theory. For calculating the PES of the CO2-C2H2 complex, we have chosen to follow the supermolecule approach. The complete basis set limit of potential energy surface has been taken by extrapolation. Our MP2 results showed the most stable form of C...
متن کاملTerahertz laser spectroscopy of the water dimer intermolecular vibrations .
Terahertz laser VRT spectra of the water dimer consisting of 731 transitions measured with an average precision of 2 MHz and involving four ~D2O!2 intermolecular vibrations ~one previously published! have been measured between 65 and 104 cm. The precisely determined energy level patterns differ both qualitatively and quantitatively from the predictions of several dimer potentials tested, and re...
متن کاملTerahertz laser spectroscopy of the water dimer intermolecular vibrations . II
Terahertz VRT laser spectra of four ~H2O!2 intermolecular vibrations consisting of 362 transitions have been measured between 87 and 108 cm with ca. 2 MHz precision. The results differ both qualitatively and quantitatively from the predictions of dimer potentials tested. The spectra also reveal an ordering of the intermolecular vibrations which differs dramatically from that predicted by normal...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 1991
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.461430