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Updated: May 10, 2026
11:45
Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
Pyridine-4-carbaldehyde-fumaric acid (2/1).
Bhupinder Sandhu1, Sergiu Draguta, Marina S Fonari
1Department of Chemistry & Biology, New Mexico Highlands University, 803 University Avenue, Las Vegas, NM 87701, USA.
Summary
This study reveals unique hydrogen-bonded trimers in a co-crystal, leading to an unusual crystal structure with three formula units per unit cell. The findings highlight novel molecular interactions in crystal engineering.
Area of Science:
- Crystal Engineering
- Supramolecular Chemistry
- Materials Science
Background:
- Hydrogen bonding is a fundamental interaction in crystal formation.
- Co-crystals offer tunable properties through molecular assembly.
- Understanding crystal packing is crucial for materials design.
Purpose of the Study:
- To investigate the crystal structure of a novel co-crystal.
- To elucidate the hydrogen bonding patterns and their influence on crystal packing.
- To analyze the formation of unique hydrogen-bonded assemblies.
Main Methods:
- Single-crystal X-ray diffraction analysis.
- Analysis of hydrogen bonding networks (O-H⋯N bonds).
- Determination of crystal system and unit cell parameters (Z=3 for triclinic).
Main Results:
- Two distinct hydrogen-bonded trimers were identified within the co-crystal structure.
- One trimer formed from components at general positions, the other by an inversion center.
- The co-crystal exhibited an uncommon Z=3 value for a triclinic system.
Conclusions:
- The study demonstrates the formation of complex hydrogen-bonded networks in co-crystals.
- The observed crystal structure is a result of specific molecular arrangements and hydrogen bonding.
- This research contributes to the understanding of supramolecular assembly and crystal engineering principles.
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