Cuprophilic Interactions in Polymeric [Cu₁₀O₂(Mes)₆]

Area of Science:

• Inorganic Chemistry
• Materials Science
• Solid-State Chemistry

Background:

• Cuprophilic compounds and Cu(I)···Cu(I) interactions are key research areas.
• Understanding these interactions is crucial for exploring diverse structural and physical properties.

Purpose of the Study:

• To investigate the compound [Cu10O2(Mes)6] using advanced experimental and theoretical methods.
• To elucidate the nature of Cu(I)···Cu(I) interactions and the compound's structural and physical properties.

Main Methods:

• State-of-the-art experimental and theoretical analysis.
• Quantum theory of atoms in molecules (QTAIM) analysis using density functional theory (DFT) calculations.
• Energy decomposition analysis (EDA).

Main Results:

• The compound [Cu10O2(Mes)6] forms a polymer in the solid state with unsupported Cu(I)···Cu(I) contacts.
• The solid-state form exhibits luminescence with two distinct fluorescent emissions.
• The polymeric structure reversibly decomposes in solution.
• QTAIM analysis characterized Cu(I)···Cu(I) contacts, with few associated with bond critical points.
• EDA revealed dispersion forces dominate monomer bonding, with ligands playing a significant role.

Conclusions:

• The study provides a comprehensive analysis of [Cu10O2(Mes)6], detailing its polymeric structure, bonding, and properties.
• The findings highlight the importance of ligand bulk in determining bonding energies in cuprophilic compounds.
• The reversible decomposition in solution and luminescence in the solid state offer insights into potential applications.