Molecular mechanics is a simple model, and it is based on a classical param
eterization of non-classical effects for the computation of molecular struc
ture. The basic concept of force field calculations is discussed and, based
on the theoretical frame, the emerging scope and limits of the approach, a
nd rules for the application, interpretation of the results and their commu
nication are presented. (C) 2001 Elsevier Science B.V. All rights reserved.