@article {3205,
	title = {MICROWAVE SPECTROSCOPIC INVESTIGATION OF THE MIXED RARE-GAS VAN-DER-WAALS TRIMERS NE2-KR AND NE2-XE},
	journal = {Journal of Chemical Physics},
	volume = {100},
	number = {6},
	year = {1994},
	note = {ISI Document Delivery No.: NA918Times Cited: 27Cited Reference Count: 45},
	month = {Mar},
	pages = {4171-4180},
	type = {Article},
	abstract = {Pure rotational spectra of six isotopomers of the rare gas trimer Ne-2-Kr and five isotopomers of the trimer Ne-2-Xe have been measured in their ground vibrational states using a Balle-Flygare-type cavity pulsed microwave Fourier transform spectrometer. Rotational constants have been evaluated, from which the geometries of the complexes have been derived. In the case of Ne-2-Kr it has been possible to obtain centrifugal distortion constants and to carry out a force field analysis. The magnitudes of the induced dipole moments of these trimers have been estimated from the {\textquoteright}{\textquoteright}pi/2 condition.{\textquoteright}{\textquoteright} The nuclear quadrupole hyperfine patterns due to Kr-83 and Xe-131 have been resolved, and the corresponding quadrupole coupling constants have been obtained. Observation of the spectra of these fundamental trimers has made it possible to compare their properties to those of their constituent rare gas dimers. The effects of three-body nonpairwise additive forces have been discussed in light of the structures obtained, the estimated induced dipole moments, and the nuclear quadrupole coupling constants.},
	keywords = {ABSORPTION-SPECTRA, AR2HCL, interactions, INTERATOMIC POTENTIALS, laser spectroscopy, POTENTIAL-ENERGY CURVE, RANGE, ROTATIONAL SPECTRA, TRIPLET DIPOLES, VANDERWAALS CLUSTER, XE},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1994NA91800014},
	author = {Xu, Y. J. and Jager, W. and Gerry, M. C. L.}
}
@article {2933,
	title = {THE MICROWAVE-SPECTRUM, STRUCTURE, AND HARMONIC FORCE-FIELD OF THE VANDERWAALS TRIMER AR2-OCS},
	journal = {Journal of Chemical Physics},
	volume = {98},
	number = {4},
	year = {1993},
	note = {ISI Document Delivery No.: KP938Times Cited: 25Cited Reference Count: 28},
	month = {Feb},
	pages = {2735-2741},
	type = {Article},
	abstract = {The microwave rotational spectra of the van der Waals trimers Ar2-OCS, (Ar2-OCS)-S-34, and (Ar2-OCS)-18 have been observed between 7.0 and 18.0 GHz using pulsed molecular beam microwave Fourier transform (MWFT) spectroscopy. Sixty-five transitions, both a and c type, have been assigned for Ar2-OCS, as well as 37 transitions and 19 transitions for (Ar2-OCS)-S-34 and (Ar2-COS)-O-18 respectively. The rotational constants and quartic centrifugal distortion constants have been determined. The trimer has been found to be a distorted tetrahedrally shaped highly asymmetric top (K= approximately 0.377) with the OCS subunit lying in the C(s) symmetry plane. An effective ground state structure has been determined. The Ar-Ar distance and the two {\textquoteright}{\textquoteright}Ar-center of mass of OCS{\textquoteright}{\textquoteright} distances are slightly longer than those in the corresponding dimers Ar2 and Ar-OCS, respectively. A harmonic force field analysis has been performed on the basis of the centrifugal distortion constants, to predict the van der Waals force constants and the corresponding vibrational frequencies. The Ar-Ar stretch force constant of the trimer is 0.008 42 mdyn angstrom-1 which compares favorably with 0.0078 mdyn angstrom-1 reported for the free dimer Ar2. A comparison of the geometry and spectroscopic properties of Ar2-OCS with those of Ar2 and of the Ar2-HX (X = F, Cl, CN) trimers is given.},
	keywords = {AR-HCN, AR2HCL, ARHCL, CLUSTER, CONSTANTS, laser spectroscopy, ROTATIONAL SPECTRA},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1993KP93800024},
	author = {Xu, Y. J. and Gerry, M. C. L. and Connelly, J. P. and Howard, B. J.}
}
