Journal of Spectroscopy

Research Article

Thermodynamical Quantities of Chalcogenide Dimers (O2, S2, Se2, and Te2) from Spectroscopic Data

Table 5

Spectroscopic constants of chalcogenide dimers.
MoleculesMW (amu) 𝜔 𝑒 ( c m − 1 ) 𝜔 𝑒 𝑥 𝑒 ( c m − 1 ) 𝐵 𝑒 ( c m − 1 ) 𝛼 𝑒 ( c m − 1 ) Ground state
O2321580.312.0711.436680.0159 3∑ − 
S264725.652.840.294430.001570 3∑ −
Se2156390.361.01090.0923770.000339 3∑ −
Te2260247.070.521920.039670.000993 3∑ −
Where 𝜔 𝑒 , 𝜔 𝑒 𝑥 𝑒 , 𝛼 𝑒 , 𝐵 𝑒 , and MW represent vibrational constant ( c m − 1 ), anharmonic constant ( c m − 1 ), stretching constant ( c m − 1 ), rotational constant ( c m − 1 ), and molecular weight (amu), respectively.