Planar tris-N-heterocyclic carbenes.

Area of Science:

• Coordination Chemistry
• Organometallic Chemistry
• Materials Science

Background:

• N-heterocyclic carbenes (NHCs) are versatile ligands in coordination chemistry.
• Triphenylene-based ligands offer unique structural and electronic properties.
• Exploring poly-carbene complexes is crucial for developing novel materials.

Purpose of the Study:

• To synthesize and characterize novel triphenylene-based planar tridentate N-heterocyclic carbenes (NHCs).
• To explore the coordination chemistry of these NHCs with gold, forming tri-gold complexes.
• To investigate the potential of these NHCs in forming organometallic polymers.

Main Methods:

• Synthesis of two triphenylene-based planar tridentate NHCs.
• Preparation of corresponding tri-gold complexes.
• Experimental determination of molecular structures using techniques like X-ray crystallography.
• Synthesis of a silver-dicarbene organometallic polymer.

Main Results:

• Successful synthesis of two novel triphenylene-based NHCs.
• Characterization of the molecular structures of a tert-butyl substituted tritopic free carbene and its tri-nuclear gold complex.
• Preparation of a silver-dicarbene organometallic polymer using the synthesized tris-NHC.

Conclusions:

• The synthesized NHCs and their gold complexes expand the scope of poly-carbene chemistry.
• The structural data provides insights into the coordination behavior of these ligands.
• The formation of an organometallic polymer highlights the potential applications of these novel NHCs in materials science.