Knowledge Bank

Absolute integrated molar absorption coefficients have been measured for the infrared absorption by the fundamental modes of methyl alcohol ($CH3OH$) in the vapor phase. The results are in reasonably good agreement with previous $reports1$ in the literature. These values have been analyzed to obtain the atomic polar $tensor2$ intensity parameters for this molecules. These values can be compared with the atomic polar tensor elements from methyl halide molecules and from water to test their transferability. These atomic polar tensors can also be calculated using ab initio methods and a 431-G (or better) basis set of wave functions, and the calculated results can be decomposed into terms from the motion of fixed bond charged, change in charge (""charge transfer"" or ""charge flux""), and the lone-pair contributions.