in methanol; water mixt. of AgNO3 and ligand in MeOH-H2O stirred at 70°C for 30 min; filtered; crystals washed with MeOH; dried on P2O5 at 298 K; elem. anal.;

in methanol; water soln. of acid in H2O/MeOH (1/2) was added to suspn. of Ag salt in H2O/MeOH (2/1) at 60°C; mixt. was refluxed for 1.5 h; hot filtered; filtrate crystd. overnight at room temp.; elem. anal.;