Crystal structure of poly[tetrakis(4-methylanilinium) [octa-μ-chlorido-dichloridotricadmium(II)]]: a two-dimensional organic–inorganic hybrid perovskite

The title polymeric compound, (C 7 H 10 N) 4 [Cd 3 Cl 10 ], involves a centrosymmetric [Cd 3 Cl 10 ] 4− tetra-anion, which is made up of three face-sharing CdCl 6 octahedra, linked by four corner Cl atoms, forming layers propagating in the ab plane. The p -methylanilinium cations, situated between the layers, form N—H...Cl hydrogen bonds to the layers, which stack up the c -axis direction. There are no π–π or C—H...π interactions involving the aromatic rings, which are inclined to each other by 42.3 (1) ° in the asymmetric unit.