(4NPEA)2PbI4 (4NPEA = 4-Nitrophenylethylammonium): Structural, NMR, and Optical Properties of a 3 × 3 Corrugated 2D Hybrid Perovskite.
Marie-Hélène TremblayFélix ThouinJohannes LeisenJohn BacsaAjay Ram Srimath KandadaJustin M HoffmanMercouri G KanatzidisAditya D MohiteCarlos Silva-AcuñaStephen BarlowSeth R MarderPublished in: Journal of the American Chemical Society (2019)
(4NPEA)2PbI4 (4NPEA = 4-nitrophenylethylammonium) is the first 3 × 3 corrugated 2D organic-Pb/I perovskite. The nitro groups are involved in cation-cation and cation-iodide interactions. The structure contains both highly distorted and near-ideal PbI6 octahedra, consistent with the observation of two 207Pb NMR resonances, while the optical properties resemble those of other 2D perovskites with distorted PbI6 octahedra.