The mixed crystal system CoxNi1-xPc(AsF6)(0.5) (0 < x < 1) was prepared and characterized by elementary analysis of EPMA, X-ray diffraction, ESR, and Raman spectra. It is shown that the mixed crystal system is formed in a wide range of x, although the CoPc(AsF6)(0.5) is not exactly isomorphous to NiPc-(AsF6)(0.5). The ESR and Raman spectra established the formation of mixed crystal in a whole range of x.