Charakterisierung von ferrocen-FeOCl-intercalat-phasen durch tieftemperatur-Mössbauerspektroskopie

Fe (C₅H₅)₂⁺ (6FeOC1) · e^? intercalation phases were studied by Mössbauer spectroscopy at 4 K. The absorption lines of the guest and host iron components are clearly separated. The isomer shift of the Fe (C₅H₅)⁺₂ guest species relative to α-Fe metal lies between δ = 0.44 ? 0.48 mm/sec. When prepared at room temperature, the intercalated compound represents, at 4 K, a single phase with a paramagnetic and an antiferromagnetic component, as expected for Fe (C₅H₅)₂⁺ (6FeOC1) · e^?. In preparations at higher temperature however, two magnetically ordered systems are revealed at 4 K, both of which differ in their magnetic and quadrupol data from the previously mentioned phase.