Abstract
WE have recently determined the ultra-violet absorption spectrum of carefully purified carbonyl sulphide, using a quartz spectrograph and a hydrogen discharge tube as a source of light. The spectrum shows a continuous absorption starting from a sharp limit at λ = 2550 ± 20 A. and extending far towards the ultraviolet. This spectrum is interpreted as corresponding to the dissociation of the COS molecule, which was also indicated by the deposit of sulphur on the walls of the absorption tube. The products of dissociation may be CO and S, or CS and O. The energies of these processes as calculated from thermochemical data are :
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References
Christy and Naudé, Phys. Rev., 37, 907, 1931.
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LOCHTE-HOLTGREVEN, W., BAWN, C. & EASTWOOD, E. Photochemical Dissociation of Carbonyl Sulphide. Nature 129, 869–870 (1932). https://doi.org/10.1038/129869c0
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DOI: https://doi.org/10.1038/129869c0
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