A double decker type complex: copper(i) iodide complexation with mixed donor macrocycles via [1 : 1] and [2 : 2]...

Area of Science:

• Coordination Chemistry
• Supramolecular Chemistry
• Materials Science

Background:

• Macrocyclic compounds are versatile ligands in coordination chemistry.
• Copper(I) iodide is a common precursor for coordination complexes.
• Understanding macrocycle self-assembly and host-guest properties is crucial for materials design.

Purpose of the Study:

• To synthesize and characterize macrocyclic complexes with copper(I) iodide.
• To investigate the structural diversity and coordination behavior of macrocycles.
• To explore the dynamic structural changes in solid-state coordination complexes.

Main Methods:

• Synthesis of 19- and 38-membered macrocycles via [1:1] and [2:2] cyclizations.
• Separation of macrocycle mixture.
• Coordination studies with copper(I) iodide.
• Single-crystal X-ray diffraction analysis.

Main Results:

• Isolation of a tetranuclear bis(macrocycle) complex involving the larger 38-membered macrocycle.
• The larger macrocycle adopts a double-decker arrangement within the complex.
• Single-crystal-to-single-crystal transformation observed upon solvent removal, leading to sliding of double-decker units.

Conclusions:

• The study demonstrates the formation of novel tetranuclear copper(I) complexes with macrocycles.
• The double-decker macrocyclic structure exhibits interesting solid-state dynamic behavior.
• This work highlights the potential of macrocyclic ligands in creating responsive coordination materials.