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Updated: May 15, 2026

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
Published on: September 8, 2017
3-(Ammonio-meth-yl)pyridinium dibromide
Basem F Ali1, Rawhi Al-Far, Salim F Haddad
1Department of Chemistry, Al al-Bayt University, Mafraq 25113, Jordan.
Abstract:
In the title salt, C(6)H(10)N(2) (2+)·2Br(-), the non-H atoms of the 3-methyl-pyridinium unit of the cation are almost coplanar (r.m.s. deviation = 0.0052 Å). In the crystal, the dications and Br anions are linked by a combination of six hydrogen bonds, viz. one N(py)-H⋯Br, two C-H⋯Br and three H(2)N-H⋯Br, into supra-molecular layers, parallel to the bc plane, composed of alternating R(2) (4)(10) and R(2) (4)(8) loops. Weak π-π inter-actions between cationic rings with centroid-centroid distances of 3.891 (2) Å are also observed.
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