Structural classification of metal complexes with three-coordinate centres

Area of Science:

• Inorganic Chemistry
• Crystallography
• Computational Chemistry

Background:

• Describing the geometry of three-coordinate silver(I) complexes is difficult due to wide variations in interatomic angles.
• Existing literature lacks an adequate classification system for these geometries.
• Idealized geometries like trigonal planar, T-shaped, and trigonal pyramidal are rarely observed in practice.

Purpose of the Study:

• To develop a comprehensive classification system for all three-coordinate geometries.
• To create a practical tool for describing complex structures.
• To illustrate the utility of the classification system with silver(I) complexes.

Main Methods:

• Analysis of the Cambridge Structural Database for three-coordinate metal complexes.
• Development of a novel classification system for three-coordinate geometries.
• Construction of a spreadsheet tool utilizing a "shape-space" approach.

Main Results:

• Observed geometries of three-coordinate metal complexes deviate significantly from idealized models.
• A new classification system has been developed to encompass all possible three-coordinate structures.
• A functional spreadsheet tool aids in the structural description of tri-coordinate centers.

Conclusions:

• The developed classification system effectively addresses the challenge of describing diverse three-coordinate geometries.
• The spreadsheet tool provides a practical method for analyzing and classifying complex structures.
• The system's utility is demonstrated through the analysis of novel silver(I) complexes.