MICROWAVE STUDY OF VIBRATION-ROTATION SPECTRUM OF CARBON SUBOXIDE C3O2 IN THE 300 TO 1000 GHZ FREQUENCY RANGE

Abstract The submillimeter wave spectrum of the C3O2 molecule was investigated within the 300- to 1000-GHz range. The measured frequencies include 256 lines belonging to the ground vibrational state and to four excited vibrational states of ν7. Rotational and centrifugal constants and constants of “l” splitting for the ground and excited states ν71, 2ν72, 3ν73, 4ν74 as well as frequencies of purely vibrational transitions ν71 ← 0; 2ν72 ← ν71; 3ν73 ← 2ν72; 4ν74 ← 3ν73 together with their correlation matrix were determined.