  We test the performance of a number of two- and one-parameter double-hybrid
approximations, combining semilocal exchange-correlation density functionals
with periodic local second-order M{\o}ller-Plesset (LMP2) perturbation theory,
for calculating lattice energies of a set of molecular crystals: urea,
formamide, ammonia, and carbon dioxide. All double-hybrid methods perform
better on average than the corresponding Kohn-Sham calculations with the same
functionals, but generally not better than standard LMP2. The one-parameter
double-hybrid approximations based on the PBEsol density functional gives
lattice energies per molecule with an accuracy of about 6 kJ/mol, which is
similar to the accuracy of LMP2. This conclusion is further verified on
molecular dimers and on the hydrogen cyanide crystal.
