GROUND-STATE CONSTANTS A(0),D(0)(K) AND H(0)(K) OF 12CH3I FROM NORMALLY ALLOWED INFRARED-ABSORPTION BANDS

The fundamental band v6, its hot band 2v6-v6 and the overtone band 2v6 of (CH3I)-C-12 were assigned. Using the lines of these three bands, ground state combination differences that differ in K by three were calculated for eight K value pairs from (3,0) to (10,7). The ground state constants A0, D0K and H0K of (CH3I)-C-12 were then determined and the results are A0 = 5.1739358(10) cm-1, D0K = 87.63(3) 10(-6)cm-1 and H0K = 4.53(22)10(-9) cm-1. The constant H0K was determined for the first time.