in "Semiempirical Molecular Orbital Methods" (Rev.Comp.Chem.
2(1990)pp 45-81) J.J.P. Stewart describes 'strong and weak points
of NDDO semiempirical methods'.
What I am interested in is whether there is any further reference
regarding the value of semiempiric methods (AM1, PM3, also ZINDO-1)
especially for the description of intermolecular pi-pi interaction
of aromatic molecules.
I would appreciate any hint on reported results or experience with
that, will summarize if it seems appropriate.
[ AT ] Berlin