Surfactant 1-Hexadecyl-3-methylimidazolium Chloride Can Convert One-Dimensional Viologen Bromoplumbate into Zero-Dimensional

Abstract

A zero-dimensional N,N'-dibutyl-4,4'-dipyridinium bromoplumbate, [BV][PbBr], with unusual discrete [PbBr] anionic clusters was prepared via a facile surfactant-mediated solvothermal process. This bromoplumbate exhibits a narrower optical band gap relative to the congeneric one-dimensional viologen bromoplumbates.

Crystal structure of the lead-containing organic–inorganic hybrid: (C18H26N2)3[Pb4I14(DMSO)2]·2DMSO

“…Viologens show excellent redox and chemical stability. In addition, they can act as effective templates for the construction of various organic-inorganic hybrids, chargetransfer complexes and supramolecular systems (Liu et al, 2017). As lead is a heavy p-block metal in the IVA group, lead(II) halide-based organic-inorganic hybrids possess a large radius, a flexible coordination environment, and variable stereochemical activities of the lead center (Li et al, 2012).…”

Large Conjugated Organic Cations Sensitized Hybrid Lead Halides as Visible Light Driven Photocatalysts

“…Structurally speaking, Pb 2+ ions tend to adopt six-coordinated octahedral [PbX 6 ] 4– (X = Cl, Br, I) geometries, which feature high self-assembly characterizations and diversified connection manners including corner-, edge-, and face-sharing to form various dimensional inorganic skeletons. Up to now, by using various organic or transition metal complex cations as structure directing agents (SDAs), incomputable anionic lead halide clusters, oligmers, 1D chains, and 2D chains have been explored and structurally characterized including [Pb 2 X 6 ] 2– , [Pb 3 X 10 ] 4– , [Pb 5 X 16 ] 6– , [Pb 7 X 24 ] 10– cluster, 1D [Pb 2 X 6 ] 2– , [Pb 2 X 7 ] 3– , [Pb 2 X 9 ] 5– , [Pb 2 X 10 ] 6– , [Pb 3 X 9 ] 3– , [Pb 3 X 10 ] 4– , 2D [PbX 4 ] 2– , [Pb 5 X 13 ] 3– , and [Pb 7 I 18 ] 4– , etc. − Moreover, limited three-dimensional (3D) networks were also reported, including [Pb 7 X 18 ] 4– (X = Br, I), [Pb 2 Cl 6 ] 2– , [Pb 21 Cl 59 ] 17– , and [Pb 9 Br 20 ] 2– . − There is no doubt that the geometry configurations and electronic distributions of organic cations play the most important roles in the structural constructions of hybrid lead halides. For example, small [H 2 DABCO] 2+ cations result in the 3D [Pb 2 Cl 6 ] 2– framework, while the synergistic contributions of (H 3 O) + and (Et 2 -DABCO) 2+ lead to another type of 3D framework [Pb 21 Cl 59 ] 17– etc. ,, …”