Pyridinium tri-bromido-stannate(II).
- 1Chemistry, Osnabrück University, Barabarstr. 7, 49069 Osnabrück, Germany.
Abstract
Single crystals of the title compound, (C5H6N)[SnBr3] or [PyH][SnBr3], were grown from aqueous solutions of pyridinium bromide, [PyH]Br, and tin dibromide, SnBr2. The compound crystallizes in the monoclinic space group P21/n with two formula units in the asymmetric unit. The cations have bond lengths and angles similar to those found in other pyridinium salts. In its first coordination sphere, the anions have a trigonal-pyramidal (tpy) shape with the SnII atoms at the apex and the three bromine atoms at the base. The tin-bromine bond lengths are all greater than 2.5 Å, and the bond angles are all less than 92°, which indicates the presence of tetrel bonds. These occur along the twofold screw axis and extend the coordination sphere of the tin atoms to highly distorted, 33-aaa octa-hedra. In the crystal, the two pyridinium cations are aggregated via weak π-π inter-actions into centrosymmetric dimers, which form angles of 61.4 (4)° between them. Additional N-H⋯Br hydrogen bonds between cations and anions are bifurcated and weak.
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BibTeX
@article{henkel2026pyridinium,
title = {{Pyridinium tri-bromido-stannate(II).}},
author = {Felix Henkel and Hans Reuter},
journal = {IUCrData},
year = {2026},
month = sep,
doi = {10.1107/s2414314626010187},
url = {https://europepmc.org/article/MED/42997267},
note = {CC BY},
}
RIS
TY - JOUR
TI - Pyridinium tri-bromido-stannate(II).
AU - Felix Henkel
AU - Hans Reuter
PY - 2026
DA - 2026/09/01
JO - IUCrData
DO - 10.1107/s2414314626010187
UR - https://europepmc.org/article/MED/42997267
AB - Single crystals of the title compound, (C5H6N)[SnBr3] or [PyH][SnBr3], were grown from aqueous solutions of pyridinium bromide, [PyH]Br, and tin dibromide, SnBr2. The compound crystallizes in the monoclinic space group P21/n with two formula units in the asymmetric unit. The cations have bond lengths and angles similar to those found in other pyridinium salts. In its first coordination sphere, the anions have a trigonal-pyramidal (tpy) shape with the SnII atoms at the apex and the three bromine atoms at the base. The tin-bromine bond lengths are all greater than 2.5 Å, and the bond angles are all less than 92°, which indicates the presence of tetrel bonds. These occur along the twofold screw axis and extend the coordination sphere of the tin atoms to highly distorted, 33-aaa octa-hedra. In the crystal, the two pyridinium cations are aggregated via weak π-π inter-actions into centrosymmetric dimers, which form angles of 61.4 (4)° between them. Additional N-H⋯Br hydrogen bonds between cations and anions are bifurcated and weak.
SN - 2414-3146
ER -