SYNTHESIS AND SOME PROPERTIES OF A LAYER-TYPE INORGANIC–ORGANIC COMPLEX OF FeOCl AND PYRIDINE

Abstract New intercalated compounds of FeOCl and pyridine were synthesized by soaking FeOCl in pyridine vapor at a temperature range from 30° to 120°C. Number of pyridine molecules per FeOCl in the product was, within the experimental error, a rational number, 1/n where n=3 and 4 depending on the temperature of preparation. The complexes have an orthorhombic unit-cell with a=3.78(1), b=13.45(3), c=3.30(l) Å. Mössbauer effect study on FeOCl (pyridine)1⁄3 at room temperature showed that the isomershift relative to Fe metal and the quadrupole splitting were 0.36(1)mm/sec and 0.92(1)mm/sec respectively. The E.S.R. spectrum of FeOCl (pyridine)1⁄3 represented a broad singlet absorption line at g=2.003 with Hmsl=200 gauss, suggesting the existence of conduction electrons resulted from partial transfer of the lone pair electrons of the nitrogen atom into FeOCl layer.