A crystallographically isolated dimeric hydrolyzed chloro-phosphazene dianion.

Area of Science:

• Organometallic Chemistry
• Coordination Chemistry
• Materials Science

Background:

• Silver N-heterocyclic carbene complexes are valuable in catalysis and materials science.
• Phosphazenes are versatile inorganic compounds with diverse applications.
• The hydrolysis of phosphazenes can lead to complex structures with unique properties.

Purpose of the Study:

• To synthesize and characterize a novel silver N-heterocyclic carbene complex.
• To investigate the reaction between a silver carbene complex and hexachlorocyclotriphosphazene in the presence of water.
• To elucidate the structure of the resulting crystalline compound.

Main Methods:

• Single crystal X-ray diffraction
• Synthesis of silver N-heterocyclic carbene complex
• Reaction of silver complex with hexachlorocyclotriphosphazene in aqueous conditions

Main Results:

• Isolation and structural determination of bis[bis-(1-ethyl-3-methyl-imidazol-2-yl-idene)silver(I)] 1,5,5,7,11,11-hexa-chloro-2,8-di-oxa-4,6,10,12,13,14-hexa-aza-1λ(5),3,5λ(5),7λ(5),9,11λ(5)-hexa-phospha-tricyclo-[7.3.1.1(3,7)]tetra-deca-1(13),4,7(14),10-tetra-ene-6,12-diide 3,9-dioxide.
• The crystal structure reveals a silver carbene cation with linear coordination and a hydrolyzed phosphazene dianion.
• The asymmetric unit contains half of the phosphazene anion, with the full anion generated by an inversion center.

Conclusions:

• The reaction successfully yielded a novel crystalline compound containing both silver carbene and hydrolyzed phosphazene moieties.
• The structural analysis provides detailed insights into the coordination of silver(I) with N-heterocyclic carbenes and the hydrolysis products of hexachlorocyclotriphosphazene.
• This study expands the known chemistry of silver carbene complexes and phosphazene derivatives.