  Coupled-cluster calculations of static electronic dipole polarizabilities for
145 organic molecules are performed to create a reference data set. The
molecules are composed from carbon, hydrogen, nitrogen, oxygen, fluorine,
sulfur, chlorine, and bromine atoms. They range in size from triatomics to 14
atoms. The Hartree-Fock and 2nd-order M{\o}ller-Plesset methods and 34 density
functionals, including local functionals, global hybrid functionals, and
range-separated functionals of the long-range-corrected and screened-exchange
varieties, are tested against this data set. On the basis of the test results,
detailed recommendations are made for selecting density functionals for
polarizability computations on relatively small organic molecules.
