Trimeric silver(I) pyrazolates with isopropyl, bromo, and nitro substituents: Synthesis and characterization of {[3,5-(i-Pr)2Pz]Ag}3, {[3,5-(i-Pr)2,4-(Br)Pz]Ag}3, and {[3,5-(i-Pr)2,4-(NO2)Pz]Ag}3

Trimeric Ag(I) adducts of 3,5-di(isopropyl)pyrazole, 3,5-di(isopropyl),4-bromopyrazole, and 3,5-di(isopropyl),4-nitropyrazole have been synthesized by reacting the corresponding pyrazoles with silver(I) oxide. They have been characterized by X-ray crystallography as well as NMR and IR spectroscopic methods. Both {[3,5-(i-Pr)2Pz]Ag}3 and {[3,5-(i-Pr)2,4-(Br)Pz]Ag}3 exist as pairs of trimers with weak Ag–Ag contacts, whereas {[3,5-(i-Pr)2,4-(NO2)Pz]Ag}3 exists as trimers in the solid state with no inter trimer Ag–Ag contacts.

Graphical abstractTrimeric Ag(I) complexes of 3,5-di(isopropyl)pyrazolate, 3,5-di(isopropyl),4-bromopyrazolate, and 3,5-di(isopropyl),4-nitropyrazolate ligands have been isolated. Both {[3,5-(i-Pr)2Pz]Ag}3 and {[3,5-(i-Pr)2,4-(Br)Pz]Ag}3 exist as pairs of trimers with weak Ag…Ag contacts, whereas {[3,5-(i-Pr)2,4-(NO2)Pz]Ag}3 exists as isolated trimers in the solid state.Figure optionsDownload full-size imageDownload as PowerPoint slide