Standard Heats and Free Energies of Formation and Absolute Entropies of 2-Chloro-2-methylpropane Does 2-Chloro-2-methylpropane have standard heats and free energies of formation and absolute entropies values in a liquid state? 
http://www.wiredchemist.com/chemistry/data/thermodynamic-data 
This website only provides the values in gaseous state and I can't seem to find the values for the liquid state anywhere.
$\Delta H_\mathrm{f}^\circ = -211.3~\mathrm{kJmol^{-1}}$ 

Neither source provided entropy or free energy data though but this is a start.

http://courses.chem.indiana.edu/c360/documents/thermodynamicdata.pdf
    http://webbook.nist.gov/cgi/cbook.cgi?ID=C507200&amp;Units=SI&amp;Mask=2#Thermo-Condensed