A neutral vicinal silylene/phosphane supported six-membered C₂PSiAu₂ ring and a silver(I) complex

Area of Science:

• Organometallic Chemistry
• Coordination Chemistry
• Inorganic Chemistry

Background:

• Bidentate ligands play a crucial role in stabilizing metal complexes.
• Understanding metal-ligand interactions is key to designing novel materials.
• Gold and silver complexes exhibit diverse coordination behaviors and potential applications.

Purpose of the Study:

• To investigate the coordination nature of a specific bidentate ligand with gold and silver.
• To characterize the resulting metal complexes and their structural features.
• To explore the electronic and bonding properties of these complexes.

Main Methods:

• Synthesis of gold and silver complexes using the bidentate ligand.
• X-ray crystallography for structural determination of complexes.
• Quantum chemical calculations to support experimental observations.

Main Results:

• Formation of a six-membered gold ring complex (2) with an intramolecular aurophilic interaction.
• Characterization of a silver complex (4) featuring silver cation insertion between phosphine donors.
• Observation of uncoordinated silicon atoms and oxidative addition of fluorine in the silver complex.

Conclusions:

• The bidentate ligand exhibits distinct coordination modes with gold and silver.
• Intramolecular aurophilic interactions are significant in the gold complex.
• The silver complex demonstrates unique structural features including Si-F bond formation.