Bis(2,6-diamino-3,5-dibromopyridinium) hexabromidostannate(IV)

Abstract

The asymmetric unit of the title compound, (C5H6Br2N3)2[SnBr6], contains one cation and one half-anion in which the Sn atom is located on a crystallographic centre of inversion and is in a quasi-octa­hedral geometry. The crystal structure is assembled via hydrogen-bonding inter­actions of two kinds, N(pyridine/amine)—H⋯Br—Sn, along with C—Br⋯Br—Sn interactions [3.4925 (19) Å]. The cations are involved in π–π stacking, which adds an extra supra­molecularity as it presents a strong case of offset-face-to-face motifs [centroid–centroid distance = 3.577 (3) Å]. The inter­molecular hydrogen bonds, short Br⋯Br inter­actions and π–π stacking result in the formation of a three-dimensional supra­molecular architecture.

Syntheses, Structures and Reactivity of New Intramolecularly Coordinated Tin Alkoxides Based on an Enantiopure Ephedrine Derivative

“…[7] Compound 7 is only the second example of a hexabromidostannate salt. [8] Its molecular structure is shown in Figure 6, and selected bond lengths and angles are given in the figure caption. The stannate anion shows slightly distorted Tin Alkoxides with an Ephedrine Derivative …”

“…ORTEP presentation of the 30 % probability ellipsoids of the depicted atoms and atom numbering scheme of 7 {P1 [Z = 1, a = 10.3644 (7), b = 10.5036 (7), c = 12.1289 (8), α = 92.636 (6), β = 99.939 (6), γ = 117.168 (7); V = 1145.29 (13) 284 (5), 117 (6·C 7 H 8 ) and 445 (7) frames via ω-rotation (Δ/ω = 1°) at two times 8 ( 2·C 7 H 8 ), 1.5 (2), 15 (3a), 50 (3b), 10 (4·C 7 H 8 ), 2.7 (5), 10 (6·C 7 H 8 ) and 3 s (7) per frame. The crystal-to-detector distance was 4.5 cm.…”

Phase transitions in (C7H12N2)2[SnCl6]Cl2·1.5H2O crystal, studied by NMR and infrared spectroscopy

“…In the molecular hybrids of interest, organic groups are sandwiched between inorganic sheets and held in place either by covalent, ionic, or Van Der Waals bonding . The structural arrangement can be described as an alternation of inorganic sheets and layers of the organic molecules or ions . Hybrid compounds with organic–inorganic layer‐alternated structures have been heavily studied due to their structural flexibility and potentially useful magnetic, electrical, optical properties, and the development of fabrication techniques .…”