2021
DOI: 10.1107/s2052520621004376
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The classification of 1D `perovskites'

Abstract: There has been a huge amount of interest in perovskites recently and new structures of hybrid perovskites are frequently reported. The classification of perovskites has been unambiguous in the discussion of 3D and layered 2D perovskites due to the dimensional constraints. However, in 1D perovskites, the additional degrees of freedom have resulted in a large number of possible structural configurations. The new proposed notation aims to classify these structures based on the connectivity of the octahedra of the… Show more

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Cited by 9 publications
(11 citation statements)
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“…13) Å), that run along the crystallographic axis a parallel to each other (Figure 3 bottom). These mini-rods are made from four lead bromide octahedra that are only slightly distorted (Table 2) and feature yet another binding mode, as they share in the order of a face, an edge and a face (Figure 3 top) similar to an octahedra sharing sometimes found in 1D hybrid perovskitoids [35], such as corner-shared mini-rods in a previously reported bromoplumbate with a N-methylated 4,4 -bipyridine cation [50]. Note that other 0D-perovskitoids often (incorrectly) [51] referred to as 0D-perovskites [13] contain isolated octahedral anions MX 6 (M = Pb 2+ , Sn 2+ , Bi 3+ ; X = Cl − , Br − , I − ) or their face-shared dimers [13] or trimers [35].…”
Section: Resultsmentioning
confidence: 97%
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“…13) Å), that run along the crystallographic axis a parallel to each other (Figure 3 bottom). These mini-rods are made from four lead bromide octahedra that are only slightly distorted (Table 2) and feature yet another binding mode, as they share in the order of a face, an edge and a face (Figure 3 top) similar to an octahedra sharing sometimes found in 1D hybrid perovskitoids [35], such as corner-shared mini-rods in a previously reported bromoplumbate with a N-methylated 4,4 -bipyridine cation [50]. Note that other 0D-perovskitoids often (incorrectly) [51] referred to as 0D-perovskites [13] contain isolated octahedral anions MX 6 (M = Pb 2+ , Sn 2+ , Bi 3+ ; X = Cl − , Br − , I − ) or their face-shared dimers [13] or trimers [35].…”
Section: Resultsmentioning
confidence: 97%
“…We expected them to be new 1D- [21] or 2D- [22,23] hybrid perovskites that contained organic charge-transfers complexes with TCNE; however, the latter was not detected by X-ray diffraction (Figures 1-3). Instead, the obtained crystalline products were perovskitoids [35] with the corresponding methanamonium cations and one-dimensional (1D) or finite arrays of lead bromide octahedra connected via different modes (other than corner-sharing in true perovskites [35]) depending on the polyaromatic/conjugated core in the hydrobromide used. Switching to (E)-(4-styrylphenyl)methanamonium hydrobromide as a source of a potential organic donor that has a very different (elongated) shape from the above "compact" polyaromatic compounds resulted in a completely different, although low-dimensional (0D) [13], perovskitoid material of the composition [StyrNH3]2[PbBr4] (Figure 3).…”
Section: Resultsmentioning
confidence: 99%
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