The electronic polarization of organic molecular crystals is obtained using
the atom-atom polarizability tensor and charge redistribution in addition
to previous theory based on induced dipoles. The dielectric tensors of anth
racene and perylenetetracarboxylic acid dianhydride (PTCDA) crystals are su
ccessfully related to molecular polarizabilities. (C) 2001 Elsevier Science
B.V. All rights reserved.