Two complexes of copper(II) salts with 5-amino-3-(pyrid-2-yl)-1H-pyrazole, the prototype for a new class of ditopic ligand

The title ligand (‘L’) in crystalline [CuBrL2]Br·CH3OH and [Cu(OH2)L2]SO4·H2O·CH3OH chelates to both the copper(II) cations and the charge-balancing anions.