CH2F2, a polar molecule

One or the other colleague has pondered, that the Kimball model, if at all usable for any purpose, would certainly not be able to compute polar molecules. This remark was a reaction to our demonstration, that it could easily predict the heat of formation at zero Kelvin for all n-alkanes (tested to C140H282) to better than one kcal/mol when calibrated at methane and ethane.
This is the reason why so many of the samples given in the table are polar, or even very polar molecules.
Here is difluoromethane: