A series of tetranuclear Cu(I) and Ag(I) complexes with bicyclic guanidinate ligands have been synthesized, the Metal-Metal distances in the crystal structure show rhombic arrangements with short contacts between two opposite metal atoms that depend on the bite angle of the ligand. The synthesized compounds are Cu4(tbo)4, Cu4(tbn)4,  Ag4(tbo)4 and Ag4(tbn)-4; where tbo is the anion of a bicyclic guanidinate with two five-membered rings (the anion of 1,4,6-triazabicyclo[3.3.0]oct-4-ene) and tbn is an similar species with six- and five-membered rings (1,5,7-triazabicyclo[4.3.0]non-6-ene).The rhombic arrangement of the structures suggests the presence of some weak cuprophilic and argentophilic interactions between to opposite metals. All four compounds are robust in ambient conditions and present luminescent properties in the solid state at room temperature.

Copper and silver guanidinate complexes with luminescence properties

247th National Meeting (2014)

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