Coinage metal complexes of 3,5-bis(trifluoromethyl)pyrazolate ligand: Synthesis and characterization of {[3,5-(CF3)2Pz]Cu}3 and {[3,5-(CF3)2Pz]Ag}3

Copper(I) and silver(I) adducts of [3,5-(CF3)2Pz]− have been prepared in good yield by reacting the corresponding metal(I) oxide with pyrazole [3,5-(CF3)2Pz]H. 1H, 13C, 19F NMR spectroscopic data as well as their X-ray crystal structures are presented. The copper adduct is trimeric in the solid state. The silver complex exists both as trimers and pairs of trimers. The trimer pairs show weak Ag–Ag interactions (Ag…Ag distance=3.3073(13) Å).