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06:44
From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
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Cobaloximes as Building Blocks in Halogen-Bonded Cocrystals
Nikola Bedeković1, Valentina Martinez1,2, Edi Topić1
1Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102A, 10 000 Zagreb, Croatia.
Materials (Basel, Switzerland)
|May 28, 2020
Summary
Cobaloxime complexes can form novel halogen-bonded metal-organic cocrystals with perhalogenated benzenes. This study highlights cobaloximes as effective halogen bond acceptors for new cocrystal synthesis routes.
Area of Science:
- Coordination Chemistry
- Supramolecular Chemistry
- Materials Science
Background:
- Halogen bonding is a crucial non-covalent interaction in crystal engineering.
- Cobaloximes are versatile coordination complexes with potential for supramolecular assembly.
- Metal-organic cocrystals offer tunable properties through controlled intermolecular interactions.
Purpose of the Study:
- To investigate the potential of cobaloxime complexes in forming halogen-bonded cocrystals.
- To explore the use of cobaloximes as halogen bond acceptors with perhalogenated benzenes.
- To synthesize and characterize novel metal-organic cocrystals utilizing halogen bonding.
Main Methods:
- Synthesis of cobaloxime complexes with pendant bromide groups and oxime oxygens.
- Cocrystallization experiments combining cobaloximes with various perhalogenated benzenes.
- Single crystal X-ray diffraction for structural determination and analysis of halogen bonding motifs.
Main Results:
- Four previously unreported cocrystals were successfully synthesized.
- The formation of targeted halogen bonding interactions, specifically I···O and I···Br, was confirmed.
- Cobaloxime units effectively acted as halogen bond acceptors in the studied systems.
Conclusions:
- Cobaloxime complexes demonstrate significant potential as halogen bond acceptors.
- This strategy provides a novel route for the synthesis of metal-organic halogen-bonded cocrystals.
- The findings open avenues for designing new functional materials based on halogen bonding.
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