Abstract
In the title molecular salt, 3C5H12N(+)·HSO4 (-)·SO4 (2-), each cation adopts a chair conformation. In the crystal, the hydrogen sulfate ion is connected to the sulfate ion by a strong O-H⋯O hydrogen bond. The packing also features a number of N-H⋯O hydrogen bonds, which lead to a three-dimensional network structure. The hydrogen sulfate anion accepts four hydrogen bonds from two cations, whereas the sulfate ion, as an acceptor, binds to five separate piperidinium cations, forming seven hydrogen bonds.
Highlights
In the title molecular salt, 3C5H12N+HSO4SO42, each cation adopts a chair conformation
The hydrogen sulfate ion is connected to the sulfate ion by a strong O—H O hydrogen bond
The packing features a number of N—H O hydrogen bonds, which lead to a three-dimensional network structure
Summary
Hydrogen bonding is a powerful and versatile tool commonly used in crystal engineering to design, combine and organize individual organic molecules in solids, creating new materials with tunable physical properties. Inorganic salts seem to be good candidates for this purpose because of the flexibility of their special structural features such as polarity and their promising potential applications in chemistry. Not of less importance would be the use of inorganic oxyanions, which are very attractive as inorganic building blocks due to their shapes and diverse reactivity in aqueous solutions. Sulfates and hydrogen sulfates of organic bases have found applications as ionic liquids (George et al, 2015). The results of a structural study on a new molecular salt obtained from piperidine and sulfuric acid are reported here
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