Inorganic–organic hybrid framework solids

Recent developments in the area of hybrid structures are overviewed with special emphasis on iron phosphate–oxalate materials. The structure of the iron phosphate–oxalates consists of iron phosphate chains or layers that are connected by oxalate moieties completing the architecture. The compounds exhibit interesting magnetic properties originating from the super-exchange interactions that are predominantly anti-ferromagnetic, involving the iron phosphates and the oxalate moieties. One of the materials, IV, also exhibits interesting adsorptive properties reminiscent of aluminosilicate zeolites. The aluminum phosphate–oxalate, VII, indicates that hybrid structures can be formed with zeolite architecture.