High-Nuclearity Silver-alkynyl Cluster Encapsulating Two Carbonates Generated from Atmospheric Carbon Dioxide Fixation and Co-protected by Diphenylphosphinate Ligands

For investigating the template effects and the ligand roles in constructing structurally charming silver clusters, we isolated and analyzed a new cluster compound, namely, [(CO3)(2)@Ag-25(C equivalent to(CBu)-Bu-t)(15)(CF3CO2)(3)(Ph2PO2)(2)I],1. We report here the synthesis, crystal structure, characterization by various spectroscopic (IR, solid-state NMR, XPS) techniques and the luminescent property of this cluster. Its X-ray crystal structure reveals that the cluster is a 25-nuclearity silver cage with double CO32- ions encapsulated in. Two diphenylphosphinates in new coordination mode (mu(2):O-1,O-1) are co-protecting on the surface of cluster 1. Also, the cluster emits orange-red light in the solid-state at 77 K.

Automated summary

By investigating the structure and characteristics of silver clusters, we analyzed a newly synthesized cluster compound and reported its crystal structure and luminescent properties.