Ferrocene-containing tri- and tetranuclear cyclic copper(i) and silver(i) pyrazolates

New tri- and tetranuclear macrocyclic silver(i) and copper(i) 3-ferrocenyl-5-(trifluoromethyl)pyrazolates were prepared: [{(3-((η5-C5H4)Fe(η5-C5H5))-5-(CF3)-Pz}M]3 (M = Cu (1), Ag (2)) and [{(3-((η5-C5H4)Fe(η5-C5H5))-5-(CF3)-Pz}Cu]4 (3). The structures of compounds were established by X-ray diffraction analysis. In the crystalline state, a planar trinuclear silver-containing macrocycliс pyrazolate and a saddle-shaped tetranuclear copper-containing macrocycle are formed. The introduction of a bulky substituent, ferrocene, into the pyrazole ligand results in complete shielding of the acidic metal sites, which precludes the coordination of base molecules. © 2017, Springer Science+Business Media, LLC, part of Springer Nature.