  A density-functional study of the alternatively-deflected zigzag structure
for the beta-phase of poly(vinylidene fluoride) or (-CH2-CF2-)n is presented.
Structure, polarization and effective charges have been determined. Using
lattice constants and atomic positions transformed from experiment, the space
group for the alternatively-deflected zigzag structure was found to be Cc2m
(C2v 16), in agreement with previous studies. We find a polarization for the
alternatively-deflected structure identical to that of the planar-zigzag
structure with small changes in the accompanying effective charges.
