ABSORPTION SPECTRUM OF METHYL IODIDE IN THE NEAR INFRARED

Abstract

The absorption spectrum of methyl iodide in the region 8500 to 25,000 Å has been investigated with an absorbing path of 30 m. and pressures up to 200 mm. A large number of bands have been found most of which can be readily classified as//or [Formula: see text] bands. An assignment of many of these bands to specific overtones or combinations of the fundamentals is suggested. In a number of instances the splitting of binary or ternary combinations of degenerate vibrations on account of anharmonicity is established and found to be in agreement with theoretical predictions.