名称:
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
摘要:
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(l) oxide. They have been characterized by X-ray crystallography as well as NMR and IR spectroscopic methods. Both {[3,5-(i-Pr)(2)Pz]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. (C) 2005 Elsevier Ltd. All rights reserved.