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Spectra of the D2O dimer in the O-D fundamental stretch region: the acceptor symmetric stretch fundamental and new combination bands
A. J. Barclay, A. R. W. McKellar, N. Moazzen-Ahmadi
The O-D stretch fundamental region of the deuterated water dimer, (D2O)2, is further studied using a pulsed supersonic slit jet and a tunable optical parametric oscillator infrared…
Infrared spectra of the water-CO2 complex in the 4.3-3.6 micron region and determination of the ground state tunneling splitting for HDO-CO2
T. Gartner, C. Lauzin, A. R. W. McKellar +1
Spectra of water-CO2 dimers are studied using a tunable mid-infrared source to probe a pulsed slit jet supersonic expansion. H2O-CO2 and D2O-CO2 are observed in the CO2 nu3 fundame…
Infrared spectra of (CO)-Rg trimers, Rg = Ne, Ar, Kr, and Xe
A. J. Barclay, A. R. W. McKellar, N. Moazzen-Ahmadi
High resolution spectra of (CO)-Rg trimers (Rg = Ne, Ar, Kr, and Xe) in the region of the CO2 nu3 fundamental (~2350 cm) are reported, using a tunable OPO laser sour…
Observing the completion of the first solvation shell of carbon dioxide in argon from rotationally resolved spectra
A. J. Barclay, A. R. W. McKellar, N. Moazzen-Ahmadi
Widespread interest in weakly bound molecular clusters of medium size (5-50 molecules) is motivated by their complicated energy landscapes, which lead to hundreds or thousands of d…
Weakly-bound clusters of atmospheric molecules: infrared spectra and structural calculations of (CO)-(CO)-(N), = (2, 1, 0), (2, 0, 1), (1, 2, 0), (1, 0, 2), (1, 1, 1), (1, 3, 0), (1, 0, 3), (1, 2, 1), (1, 1, 2)
A. J. Barclay, A. R. W. McKellar, A. Pietropolli Charmet +1
Structural calculations and high-resolution infrared spectra are reported for trimers and tetramers containing CO together with CO and/or N. Among the 9 clusters studied he…
New infrared spectra of CO2-Ne: fundamental for CO2-22Ne isotopologue, intermolecular bend, and symmetry breaking of the intramolecular CO2 bend
A. J. Barclay, A. R. W. McKellar, N. Moazzen-Ahmadi
The infrared spectrum of the weakly-bound CO2-Ne complex is studied in the region of the carbon dioxide nu3 fundamental vibration (~2350 cm-1), using a tunable OPO laser source to…
Infrared spectra of both isomers of CO-CO in the CO region
A. J. Barclay, A. R. W. McKellar, N. Moazzen-Ahmadi
Extensive infrared spectra of the weakly-bound CO-CO dimer are observed in the carbon dioxide asymmetric stretch region (~2350 cm-1) using a tunable infrared OPO laser so…
New infrared spectra of CO2-Xe: modeling Xe isotope effects, intermolecular bend and stretch, and symmetry breaking of the CO2 bend
A. J. Barclay, A. R. W. McKellar, Colin M. Western +1
The infrared spectrum of the weakly-bound CO2-Xe complex is studied in the region of the carbon dioxide nu3 fundamental vibration (~2350 cm-1), using a tunable OPO laser source to…
Exploring the next step in micro-solvation of CO in water: Infrared spectra and structural calculations of (H2O)4- CO and (D2O)4- CO
A. J. Barclay, A. Pietropolli Charmet, A. R. W. McKellar +1
We extend studies of micro-solvation of carbon monoxide by a combination of high-resolution IR spectroscopy and ab initio calculations. Spectra of the (H2O)4-CO and (D2O)4-CO penta…
Symmetry breaking of the bending mode of CO2 in the presence of Ar
T. A. Gartner, A. J. Barclay, A. R. W. McKellar +1
The weak infrared spectrum of CO2-Ar corresponding to the (0111) <-- (0110) hot band of CO2 is detected in the region of the carbon dioxide nu3 fundamental vibration (~2340 cm-1),…
Spectra of CO2-N2 dimer in the 4.2 micron region: symmetry breaking of the intramolecular CO2 bend, the intermolecular bend and higher K-values for the fundamental
A. J. Barclay, A. R. W. McKellar, N. Moazzen-Ahmadi
Infrared spectra of the CO2-N2 dimer are observed in the carbon dioxide nu3 asymmetric stretch region (~2350 cm-1) using a tunable infrared optical parametric oscillator to probe a…
The ethylene-carbon dioxide complex and the double rotor model
A. R. W. McKellar, N. Moazzen-Ahmadi
The infrared spectrum of the weakly-bound C2H4-CO2 complex is investigated in the region of the nu3 fundamental band of CO2 (~2350 cm-1), using a tunable OPO laser source to probe…
Micro-solvation of CO in water: Infrared spectra and structural calculations for (DO)-CO and (DO)-CO
Aaron J. Barclay, Andrea Pietropolli Charmet, Kirk H. Michaelian +2
The weakly-bound molecular clusters (D2O)2-CO and (D2O)3-CO are observed in the C-O stretch fundamental region (~2150 cm-1), and their rotationally-resolved infrared spectra yield…
The most stable isomer of HC-(OCS) van der Waals complex: Theory and experiment agree on a structure with C2 symmetry
A. J. Barclay, A. Pietropolli Charmet, N. Moazzen-Ahmadi
We report the infrared spectrum of HC-(OCS) trimer in the region of the nu1 fundamental vibration of the OCS monomer. The van der Waals complexes are generated in a sup…
The water-carbon monoxide dimer: new infrared spectra, ab initio rovibrational energy level calculations, and an interesting intermolecular mode
A. Barclay, A. van der Avoird, A. R. W. McKellar +1
Rovibrational energy level calculations using a high-level intermolecular potential surface are reported for H2O-CO and D2O-CO. They predict the ground K = 1 levels to lie about 20…
Spectra of the D2O dimer in the O-D fundamental stretch region: vibrational dependence of tunneling splittings and lifetimes
A. J. Barclay, A. R. W. McKellar, N. Moazzen-Ahmadi
The fundamental O-D stretch region (2600 - 2800 cm-1) of the fully deuterated water dimer, (D2O)2, is studied using a pulsed supersonic slit jet source and a tunable optical parame…
Infrared bands of CS2 dimer and trimer at 4.5 cm-1
A. J. Barclay, K. Esteki, K. H. Michaelian +2
We report observation of new infrared bands of (CS2)2 and (CS2)3 in the region of the CS2 ν1+ ν3 combination band (at 4.5 cm-1) using a quantum cascade laser. The complexes are for…
The N2O-CS2 dimer is cross-shaped
N. Moazzen-Ahmadi, A. R. W. McKellar
The infrared spectrum of the cross-shaped van der Waals complex N2O-CS2 is observed in the region of the N2O nu1 fundamental band (~2220 cm-1) using a tuneable diode laser to probe…
Infrared spectra of Rg1,2 - C6H6 complexes, Rg = He, Ne, Ar
K. Esteki, A. J. Barclay, A. R. W. McKellar +1
Infrared spectra of Rg1,2 - C6H6 complexes (Rg = He, Ne, Ar) are observed in the region of the nu12 fundamental of C6H6 using a pulsed supersonic jet expansion and a tunable optica…
Characterization of OCS-HCCCCH and N2O-HCCCCH dimers: Theory and experiment
A. J. Barclay, A. Pietropolli Charmet, K. H. Michaelian +1
The infrared spectra of the weakly-bound dimers OCS-HCCCCH, in the region of the nu1 fundamental band of OCS (2050 cm-1), and N2O-HCCCCH, in the region of the nu1 fundamental band…
Infrared spectrum and intermolecular potential energy surface of the CO-O2 dimer
A. J. Barclay, A. R. W. McKellar, N. Moazzen-Ahmadi +3
Only a few weakly-bound complexes containing the O2 molecule have been characterized by high resolution spectroscopy, no doubt due to the complications added by the oxygen molecule…
Infrared spectra of C2H4 dimer and trimer
A. J. Barclay, K. Esteki, A. R. W. McKellar +1
Spectra of ethylene dimers and trimers are studied in the nu11 and (for the dimer) nu9 fundamental band regions of C2H4 (~2990 and 3100 cm-1) using a tunable optical parametric osc…
The He2 - OCS complex: comparison between theory and experiment
J. Norooz Oliaee, N. Moazzen-Ahmadi, A. R. W. McKellar +2
OCS is an ideal probe for quantum solvation effects in cold helium clusters. He2-OCS is the "second step" in going from a single OCS molecule to a large doped superfluid helium clu…
Infrared observation of OC-C2H2, OC-(C2H2)2 and their isotopologues
A. J. Barclay, A. Mohandesi, K. H. Michaelian +2
The fundamental band for the OC-C2H2 dimer and two combination bands involving the intermolecular bending modes nu9 and nu8 in the carbon monoxide CO stretch region are re-examined…