Isotope effects in the infrared spectrum of the OCS dimer

Isotope effects in the infrared spectra of the polar and nonpolar isomers of N2O dimer

“…Fig. 4 shows the central part of the observed band along with the simulated spectra for the polar and nonpolar ( 15 N 15 N 16 O) 2 dimers and the 15 N 2 O-He complex 0.59 (13) a Quantities in parentheses correspond to 1r from the least-squares fit, in units of the last quoted digit. b Upper state centrifugal distortion parameters are fixed at ground state values.…”

“…The laser was used in a rapid-scan signal averaging mode [12,13]. Simultaneous etalon (with a free spectral range of 0.00997 cm À1 ) and 14 N 2 O reference gas spectra were recorded to perform a frequency interpolation and absolute calibration, respectively.…”

New infrared spectra of the nitrous oxide trimer

“…[1][2][3][4][5][6][7][8][9][10] The aim of the research is to probe the intermolecular forces in these systems by providing clear spectroscopic data against which theory can be benchmarked. As well, results on trimers, tetramers, and larger clusters may give insight into nucleation and condensation dynamics and into orientational disorder effects in molecular crystals.…”

Infrared spectra of two isomers of OCS–C2H2 and OCS–C2D2 in the region of OCS ν1 fundamental

“…Although the observation was complicated by the appearance of new spectra due to argon-containing complexes, it was evident 0.0504131 (19) 0.0479600(28) 10 6 Â D K ' 0.94 (29) 0.941 b 10 6 Â D JK ' À0.21 (13) 0.52(17) 10 7 Â D J ' 3.26 (19) 2.36 ( [35] were 0.45(3) and 0.81(3) kHz for OCS-C 2 H 2 and OCS-C 2 D 2 , respectively. We believe that due to typos in reporting, these values should be multiplied by a factor of 10, as given here (in cm À1 ).…”

“…Some complexes have been studied spectroscopically in both the microwave and infrared regions, such as polar (N 2 O) 2 [1][2][3][4], polar (OCS) 2 [5,6], (OCS) 3 [7,8], (C 2 H 2 ) 2 [9,10], OCS-CO 2 [11,12], CO 2 -N 2 O [13][14][15], CO 2 -C 2 H 2 [16,17], and N 2 O-C 2 H 2 [18][19][20][21][22]. Others have been studied only by means of their infrared spectra, either because of their nonpolar structure like nonpolar (N 2 O) 2 [4,[23][24][25][26][27], nonpolar (OCS) 2 [28,29], and (CO 2 ) 2 [30,31], or because of complications arising from extensive hyperfine structure, like (N 2 O) 3 [32,33]. Still other complexes have hitherto been studied only by microwave spectroscopy, for example the subject of the present paper, OCS-C 2 H 2 , which occurs as two distinct isomers as shown by Peebles and Kuczkowski [34,35].…”