Extended Data Fig. 2: Schematic illustrating the templating of a hydronium sulfonate between layers of a CuCl42– perovskite sublattice. | Nature

Extended Data Fig. 2: Schematic illustrating the templating of a hydronium sulfonate between layers of a CuCl42– perovskite sublattice.

From: Directed assembly of layered perovskite heterostructures as single crystals

Extended Data Fig. 2

a, The archetypal parent 3D perovskite with the relevant slice highlighted. The parent structure RbCuCl3 is unknown though RbCuF3 is known. b, The dimensionally reduced product of a copper chloride perovskite as isolated in the single-crystal structure of (propylammonium)2CuCl4 and the previously reported layered crystal structure of hydronium triflate. Structure directing functional groups are highlighted in blue (ammonium) and red (sulfonate). c, The same interactions from b are shown in the compound (H3O)2(taurine)2CuCl4. The elements Cu, Cl, C, H, N, S, O and F are coloured dark-green, green, grey, white, blue, yellow, red and lime-green, respectively.

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