catena-Poly[tetramethylammonium [argentate(I)-di-μ-bromido]]

Abstract

The title compound, {(C4H12N)[AgBr2]}n, is isomorphous with its chloride analogue [Helgesson, Josefsson & Jagner (1988). Acta Cryst. C44, 1729–1731]. It displays a one‐dimensional ∞1[Ag2Br4]n2n− anionic chain structure accompanied by isolated tetramethylammonium cations. All the crystallographically independent non‐H atoms lie on special positions, namely Ag on 2mm, Br on mm2 or m2m, N on mm2, and C on sites of symmetry ma or mb. The tetramethylammonium cations reside between these anionic chains, with weak C—H...Br hydrogen‐bonding interactions forming a layer perpendicular to the c axis; these layers stack together along the c direction merely by van der Waals forces.

Ino-Chloridolithates from Ionothermal Synthesis

“…In contrast to silicates that are commonly corner-sharing, the edge-sharing tetrahedra in 1 also relate the lithate to halidometalates of the transition metals. Indeed, 1 is isotypic to the bromidoargentate (Me 4 N)­[AgBr 2 ] …”

“…Indeed, 1 is isotypic to the bromidoargentate (Me 4 N)[AgBr 2 ]. 46 Within the original synthesis, LiFeO 2 can be replaced by LiCl to increase the yield from a few crystals to approximately 42% and prevent the formation of iron-containing side products. Subsequent treatment of the reaction mixture with dichloromethane and filtration affords 1 with approximately 21% residual LiCl as determined from powder diffraction analysis (Figure 2).…”