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A novel binucleating macrocyclic ligand with two alcohol pendants.
De-Xi Yang1, Shu-An Li, Dong-Feng Li
1Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China.
Acta Crystallographica. Section C, Crystal Structure Communications
|January 10, 2002
Summary
A novel binucleating macrocyclic ligand was synthesized and crystallized. Its structure reveals an inversion center and intermolecular hydrogen bonding, contributing to crystal stability.
Area of Science:
- Coordination Chemistry
- Supramolecular Chemistry
- Crystallography
Background:
- Macrocyclic ligands are crucial in coordination chemistry.
- Understanding ligand structure and intermolecular interactions is key to designing new materials.
Purpose of the Study:
- To synthesize and characterize a novel binucleating macrocyclic ligand.
- To investigate the crystal structure and intermolecular interactions of the ligand.
Main Methods:
- Chemical synthesis of the macrocyclic ligand.
- Crystallization as a tetrahydrobromide salt tetrahydrate.
- X-ray crystallography for structural determination.
Main Results:
- Successful synthesis and crystallization of the novel macrocyclic ligand.
- The crystal structure exhibits a crystallographic inversion center within the macrocyclic cavity.
- Parallel benzene rings within the macrocycle engage in pi-pi stacking (3.791 Å separation).
- An infinite intermolecular hydrogen-bond network stabilizes the crystal.
Conclusions:
- The synthesized macrocyclic ligand possesses a unique structural motif.
- Pi-pi stacking and hydrogen bonding play significant roles in stabilizing the crystal lattice.
- This structural insight can inform the design of new functional macrocyclic compounds.