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Updated: May 27, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
Bis(2,4,6-trimethyl-anilinium) sulfate monohydrate
1Ordered Matter Science Research Center, Southeast University, Nanjing 210096, People's Republic of China.
The crystal structure of a compound containing 2C(9)H(14)N(+) cations, sulfate anions, and water molecules was determined. Intermolecular hydrogen bonds and interactions involving N-H, O-H, and S atoms were observed.
Area of Science:
- Crystallography
- Chemical Physics
- Materials Science
Background:
- Understanding the crystal structure of ionic compounds is crucial for predicting their physical and chemical properties.
- Hydrogen bonding and other intermolecular forces play a significant role in stabilizing crystal lattices.
- The specific compound, 2C(9)H(14)N(+)·SO(4) (2-)·H(2)O, is a salt hydrate with potential applications in various chemical processes.
Purpose of the Study:
- To elucidate the detailed crystal structure of the title compound, 2C(9)H(14)N(+)·SO(4) (2-)·H(2)O.
- To identify and characterize the types of intermolecular interactions present in the crystal lattice.
- To provide insights into the supramolecular assembly driven by hydrogen bonding and other weak interactions.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the three-dimensional arrangement of atoms.
- The crystal structure was solved and refined using standard crystallographic software.
- Analysis of interatomic distances and angles was performed to identify hydrogen bonds and other interactions.
Main Results:
- The crystal structure reveals the presence of 2C(9)H(14)N(+) cations, sulfate (SO(4) (2-)) anions, and water (H(2)O) molecules.
- Extensive inter-molecular hydrogen bonds of the N-H⋯O and O-H⋯O types were observed, linking the components into a cohesive network.
- Additional inter-actions, specifically N-H⋯S and O-H⋯S, were also identified, contributing to the overall crystal stability.
Conclusions:
- The crystal structure of 2C(9)H(14)N(+)·SO(4) (2-)·H(2)O is stabilized by a combination of strong hydrogen bonds and weaker N-H⋯S/O-H⋯S interactions.
- These intermolecular forces dictate the packing arrangement and supramolecular architecture of the compound.
- The findings contribute to the understanding of structure-property relationships in organic-inorganic hybrid materials.
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