All life on our earth can be viewed as an application of supramolecular chemistry, with noncovalent interactions playing a central role. The knowledge of total interaction energies as well as their components is topical for understanding the nature of these interactions and, in a broader sense, also for understanding the nature of stabilization of noncovalent systems like biomacromolecules. Accurate data on interaction energies can only be obtained from coupled-cluster with single and double and perturbative triple excitations (CCSD(T)) calculations performed with extended basis sets. The CCSDD(T) calculations thus provide benchmark data which can be used for testing and/or parameterizing other, computationally economical techniques. In the present review the applicability and performance of various recently introduced wavefunction and density functional methods are examined in detail.
Annual Reports Section "C" (Physical Chemistry) – Royal Society of Chemistry
Published: Apr 12, 2011