Far-Infrared Spectra of Crystalline Acetylenes C2H2 and C2D2
- 1 June 1966
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 44 (11), 4216-4219
- https://doi.org/10.1063/1.1726608
Abstract
The far‐infrared spectra of polycrystalline films of acetylene and fully deuterated acetylene have been recorded at 77°K, using a commercial Michelson interferometer. Two sharp bands are observed for each crystal, and the frequency change on deuteration leads to their assignment as translational lattice modes. From these and other spectroscopic results, deductions concerning the crystal structure, which has not been directly measured at this temperature, are made, and it is concluded that the most likely factor group is of D 2h symmetry with two molecules per unit cell on C 2h sites, a structure similar to those of crystalline carbon disulfide and the halogens.Keywords
This publication has 15 references indexed in Scilit:
- Far infrared study of molecular crystals by interferometric methodsSpectrochimica Acta, 1965
- Far infra-red spectra of molecular crystalsMolecular Physics, 1965
- High-Resolution Fourier Transform Spectroscopy in the Far-InfraredJournal of the Optical Society of America, 1964
- Infrared Spectra of Crystalline C2H2, C2HD, and C2D2The Journal of Chemical Physics, 1964
- Absolute Infrared Intensities of the Fundamental Absorption Bands in Solid CS2The Journal of Chemical Physics, 1964
- Far infra-red spectra of molecular crystalsMolecular Physics, 1964
- Torsional vibrations in CO2 and N2O crystalsSpectrochimica Acta, 1959
- The crystal structure of solid chlorineActa Crystallographica, 1956
- The crystal structure of solid chlorineActa Crystallographica, 1952
- The Structure of Crystalline BromineJournal of the American Chemical Society, 1936