Semi-empirical molecular orbital calculations using PM3 Hamiltonian were em
ployed to determine qualitative assignments of the vibrational spectrum of
zinc phthalocyanine (ZnPc). The assignments are from the potential energy d
istribution calculations in the normal coordinate analysis and optimized ge
ometry in the PM3 calculations. The structure of the ZnPc molecule is also
deduced. (C) 1999 Elsevier Science B.V. All rights reserved.