Metallocene intercalate compounds with iron oxychloride, FeOCl(FeCp2)0.16 and FeOCl(CoCp2)0.36 with Cp being cyclopentadienyl group, are synthesized and characterized. Magnetism and the structure-property relations are investigated by magnetic measurement and 57Fe Mossbauer spectroscopy. The results show that the throughspace dipolar interactions play a critical role in three-dimensional magnetic ordering of such layered compounds.