PRECISE ROVIBRONIC TERM VALUES OF SOME VIBRATIONAL LEVELS OF THE A(1)PI, B-1-SIGMA(-1-SIGMA(+), AND E(1)PI STATES OF (CO)-C-12-O-18 AND (CO)-C-13-O-18(), C)

Term values of the A(1) Pi, upsilon = 1 and 2 levels of (CO)-C-12-O-18 and upsilon = 1 level of (CO)-C-13-O-18 from the experimental data of the A(1) Pi-X(1) Sigma(+) system (Haridass et al., J. Mel, Spectrosc. 167, 334-352, 1994) were calculated. Term values of the Rydberg state s B-1 Sigma(+), upsilon = 0 and 1, C-1 Sigma(+), upsilon = 0, and E(1) Pi, upsilon = 0 of these two isotopomers were calculated by combining the data of the A(1) Pi-X(1) Sigma(+) system and those of the B-1 Sig ma(+)-A(1) Pi, C-1 Sigma(+)-A(1) Pi, and E(1) Pi-A(1) Pi systems taken from the literature. The interaction between the C and E states was t aken into account in determining their molecular parameters. Finally, the molecular constants of the B, C, and E states of (CO)-C-12-O-18 an d (CO)-C-13-O-18 were determined from the calculated term values. (C) 1994 Academic Press, Inc.