The microwave spectra of carbonyl sulfide and cyanogen chloride in the 8mm. region.

The construction of a microwave spectroscope is described and the results of the first investigations using this instrument given. Details of a frequency standard for operation in the 40,000 mc/s region are included. Carbonyl sulfide has been studied to gain familiarity with and confidence in the instrument as well as to resolve minor disagreements. The magnitude of the Fermi resonance and the vibration-rotation interaction constants have been determined. The spectrum of cyanogens chloride is somewhat complicated by nuclear electric quadrupole-quadrupole interactions as well as Fermi resonance