Synthesis, structural characterization and magnetic property of nanocomposite materials: Intercalation compounds of FePS₃ with 1, 10-phenanthroline or 2, 2′-bipyridine

Two new intercalation compounds Fe_0.90 PS₃ (phen)_0.41 (1) (phen stands for 1, 10-phenanthroline including a part of 1, 10-phenanthroline H⁺ ) and Fe_0.83 PS₃ (bipy)_0.34 (2) (bipy stands for 2,2′-bipyridine H⁺) were synthesized by the reaction of the layered FePS₃ with 1, 10-phenanthroline or 2,2′-bipyridine in the presence of anilinium chloride. They were characterized by elemental analyses, powder X-ray diffraction (XRD), infrared spectroscopy. The lattice spacing of the intercalate was expanded by 0.90 nm for Fe_0.90 PS₃(phen)_0.41 and 0.57 nm for Fe_0.83 PS₃ (bipy)_0.34 with respect to the pristine FePS₃, indicating that the ring plane of the guests is perpendicular to the layer of the host. The UV-vis absorption spectra of the filtrate in preparation of the intercalates indicate that 1,10-phenanthroline or 2,2′-bipyridine also acts as a complexing agent to remove intralamellar Fe²⁺ ions into the solution during intercalation. The magnetic properties of 1 and 2 were studied.