In the present work, the investigation of gold(III) phthalocyanine chloride (AuClPc) which received very
little attention before is progressed further using a range of optical spectroscopic techniques. Thin films
of gold(III) phthalocyanine chloride were produced by organic molecular beam deposition deposition
and their structure was investigated by UVevisible spectroscopy, polarization dependent Raman spectroscopy
and atomic force microscopy. Experimental observations were confirmed by theoretical analysis
using quantum chemical calculations; the latter were used for the detailed assignment of different bands
in IR spectra of the gold(III) phthalocyanine chloride. The orientation of gold(III) phthalocyanine chloride
molecules relative to the substrate surface was studied in detail using techniques based on the polarization
dependent Raman spectroscopy. It was shown that gold(III) phthalocyanine chloride films
deposited on quartz substrates at 100
C exhibit a co-facial structure with the average tilt angles of Pc
moieties of ~70
.