The classification of 1D `perovskites'

There has been a huge amount of interest in perovskites recently and new structures hybrid are frequently reported. The classification unambiguous the discussion 3D layered 2D due to dimensional constraints. However, 1D perovskites, additional degrees freedom have resulted large number possible structural configurations. proposed notation aims classify these based on connectivity octahedra perovskite, which periodic repeating pattern. should be restricted simple haloplumbate as would become too cumbersome when applied an exotic framework characteristics, such perovskite polytypes.