  We present a simple and non-empirical method to determine optimal scaling
coefficients, within the (spin-component)-scaled MP2 approach, for calculating
intermolecular potential energies of noncovalently-interacting systems. The
method is based on an observed proportionality between (spin-component) MP2 and
CCSD(T) energies for a wide range of intermolecular distances and allows to
compute with high accuracy a large portion of the dissociation curve at the
cost of a single CCSD(T) calculation. The accuracy of the present procedure is
assessed for a series of noncovalently-interacting test systems: the obtained
results reproduce CCSD(T) quality in all cases and definitely outperform
conventional MP2, CCSD and SCS-MP2 results. The difficult case of the Beryllium
dimer is also considered.
