Methanol, crystal structure Raman

In the case of methanol, the gas phase dimer has not been observed experimentally, thus the configuration found in the crystal structure [31] is taken to be close to that expected for the free dimer at OK. Further, the far infrared and raman spectra are known only for the crystalline [49] state, and the symmetric stretch frequencies used here as guides are experimentally somewhat perturbed by crystal packing effects and thus are allowed to deviate somewhat from the observed values. The experimental dimerization data for methanol [20] is also not as well defined as it is for the carboxylic acids, and an average of several experimental values is used. 

---