  The present work proposes an approach to obtain a basis-set correction based
on density-functional theory (DFT) for the computation of molecular properties
in wave-function theory (WFT). This approach allows one to accelerate the
basis-set convergence of any energy derivative of a non-variational WFT method,
generalizing previous works on the DFT-based basis-set correction where either
only ground-state energies could be computed with non-variational wave
functions [J. Phys. Chem. Lett. 10, 2931 (2019)] or properties where computed
as expectation values over variational wave functions [J. Chem. Phys. 155,
044109 (2021)]. This work focuses on the basis-set correction of dipole moments
in coupled-cluster with single, double, and perturbative triple excitations
(CCSD(T)), which is numerically tested on a set of fourteen molecules with
dipole moments covering two orders of magnitude. As the basis-set correction
relies only on Hartree-Fock densities, its computational cost is marginal with
respect to the one of the CCSD(T) calculations. Statistical analysis of the
numerical results shows a clear improvement of the basis convergence of the
dipole moment with respect to the usual CCSD(T) calculations.
