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07:36
Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
Published on: November 9, 2019
1,1'-(Ethane-1,2-di-yl)bis-(1,4,7-triazonane).
1Main Building, School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, Wales.
Summary
This study describes a new centrosymmetric compound (dtne) where two 1,4,7-triaza-cyclo-nonane (tacn) molecules are linked by an ethylene spacer. Molecular packing is stabilized by hydrogen bonds forming infinite chains.
Area of Science:
- Supramolecular Chemistry
- Crystal Engineering
- Organic Synthesis
Background:
- 1,4,7-triaza-cyclo-nonane (tacn) is a macrocyclic ligand with diverse applications.
- Understanding the self-assembly of organic molecules is crucial for materials science.
- Hydrogen bonding plays a key role in dictating crystal structures.
Purpose of the Study:
- To synthesize and characterize a novel centrosymmetric compound linking two tacn moieties.
- To investigate the intermolecular interactions and crystal packing of the title compound.
- To explore the formation of hydrogen-bonded motifs and extended structures.
Main Methods:
- Single-crystal X-ray diffraction analysis of the title compound (dtne).
- Analysis of molecular structure and symmetry.
- Investigation of intermolecular N-H⋯N hydrogen bonding interactions.
- Description of the crystal packing and resulting supramolecular architecture.
Main Results:
- The title compound, C(14)H(32)N(6) (dtne), crystallizes in a centrosymmetric space group.
- Two 1,4,7-triaza-cyclo-nonane (tacn) units are connected by an ethylene linker.
- Intermolecular N-H⋯N hydrogen bonds form R(2)(2)(22) ring motifs.
- These hydrogen bonds lead to the formation of infinite molecular chains along the a axis.
Conclusions:
- The synthesis and structural characterization of dtne reveal a novel supramolecular assembly.
- The crystal structure is dominated by specific hydrogen bonding patterns.
- The observed chain-like structure has implications for the design of functional materials based on tacn derivatives.
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