Di­aqua­bis­(nitrato‐κO)­bis(4,7‐di­hydro‐1,2,4‐triazolo[1,5‐a]­pyrimidin‐7‐one‐κN3)copper(II)

The molecule of the title compound, [Cu(7HtpO)2(NO3)2(H2O)2], contains two neutral 4,7‐di­hydro‐1,2,4‐triazolo­[1,5‐a]­pyrimidin‐7‐one (7HtpO) ligands , coord­in­ated through the N atom in position 3, two nitrate ions each coordinated through one of the O atoms, and two water mol­ecules, completing the octahedral environment around the copper atom which lies on an inversion centre, thus defining the all‐trans isomer. The intramolecular N—H⋯O hydrogen bond involving the nitrate oxy­gen atom linked to the metal atom stabilizes the structure. Distances in the coordination sphere are Cu—N(7HtpO)= 2.003 (2), Cu—O(nitrate) = 2.410 (2) and Cu—O(water) = 1.977 (2) Å.