Mössbauer spectra of (Fe0.5Zn0.5)PS3, which is isomorphous with FePS3, were measured at 300 and 80 K, and were compared with those of FePS3. We succeeded in preparing (Fe0.5Zn0.5)PS3 intercalated with pyridine. In the XRD pattern of the intercalate the diffraction peaks corresponding to (Fe0.5Zn0.5)PS3 were completely missing, suggesting that the intercalation was completely performed with pyridine. The Mössbauer spectra were changed significantly by the intercalation suggesting the charge transfer from guest molecules to the host matrix. The replacement of iron by zinc has no influence on the electronic state of the iron atom, except for the magnetic interaction.