Au-Containing Coordination Polymers Based on Polyphosphorus Ligand Complexes.

Area of Science:

• Organometallic Chemistry
• Coordination Chemistry
• Materials Science

Background:

• Pentaphosphaferrocenes (Cp^RFe(η⁵-P₅)) are known to self-assemble with Cu and Ag salts.
• Coordination chemistry of these ligands with gold (Au) complexes remains largely unexplored.

Purpose of the Study:

• To investigate the self-assembly of pentaphosphaferrocenes with various gold salts.
• To synthesize and characterize novel molecular and polymeric coordination compounds.

Main Methods:

• Self-assembly reactions with gold salts (AuCl, AuGaCl4, AuSbF6, AuTEF).
• Characterization using X-ray diffraction, NMR spectroscopy (variable-temperature and solid-state).

Main Results:

• Isolation of diverse molecular coordination products.
• Formation of the first coordination polymers involving polyphosphorus ligands and gold.
• Discovery of a 2D coordination polymer with metal vacancies.
• Observed linear or trigonal planar coordination environments for gold centers.
• Evidence of highly dynamic processes in solution.

Conclusions:

• Pentaphosphaferrocenes effectively coordinate with gold salts, leading to new molecular and polymeric structures.
• The study introduces novel gold-containing coordination polymers and a unique 2D polymer with metal vacancies.
• Dynamic behavior in solution highlights the complex nature of these gold-phosphorus interactions.