Control over the coordination preferences in Ag+ and Ag+/UO22+ 1,2,4-triazolecarboxylate frameworks

A new heterofunctional ligand (Me2trGly-H = 3,5-dimethyl-(1,2,4-triazol-4-yl)-acetic acid)was employed for the synthesis of two coordination polymers [Ag4(Me2trGly-H)2.25(Me2trGly)1.75(NO3)2](NO3)0.25⋅6H2O (1) and [Ag4(UO2)(H2O)(Me2trGly)4(NO3)2]⋅5H2O (2). In compound 1, the triazole functional groups interact with Ag+ forming the stable tetranuclear rhombic {Ag4(Me2tr)4} motif, while the partially deprotonated carboxylic functions are left...