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Inorganic–Organic Hybrids Incorporating a Chiral Cyclic Ammonium Cation
Abstract
In this paper we report the synthesis and the crystal structure of eight inorganic–organic hybrids containing various lead halides as the inorganic motif and a chiral, primary ammonium cation as the organic constituent. The organic cation investigated is (C6H11C*H(CH3)NH3)+ and both the (R) and (S) as well as the racemic (RS) forms were used.Within the structures obtained, three different inorganic motifs are displayed by the lead halide octahedra: 1-D polymeric face-sharing chains of formula ((R)-[C6H5CH(CH3)NH3)PbBr3] (4) and [((S)-C6H5CH(CH3)NH3)PbBr3] (5); 1-D polymeric corner-sharing ribbons based on the terminated-K2NiF4 type structure of formula ((R)-[C6H5CH(CH3)NH3)8Pb8I14] (1) and [((S)-C6H5CH(CH3)NH3)8Pb8I14] (2); and 2-D corner-sharing layers based on the K2NiF4 perovskite structure type of formula [((RS)-C6H5CH(CH3)NH3)2PbBr4] (3), [((RS)-C6H5CH(CH3)NH3)2PbCl4] (6), ((R)-[C6H5CH(CH3)NH3)2PbCl4] (7) and [((S)-C6H5CH(CH3)NH3)2PbCl4] (8).
KEYWORDS Inorganic–organic hybrids, X-ray crystal structure, hydrogen bonding, lead halide octahedra.
