(4,4,12,12‐Tetramethyl‐5,8,11‐triazapenta‐2,14‐dione 2‐oxime 14‐oximato‐κ 5 N )copper(II) perchlorate: a copper(II) compound with a pentadentate triamine–oxime–oximate ligand

The title compound, [Cu(C 16 H 34 N 5 O 2 )]ClO 4 , has discrete square‐pyramidal (triamine–oxime–oximato)copper(II) cations and perchlorate anions. The cations have very approximate mirror symmetry, with the oxime [Cu—N = 2.066 (2) Å], oximate [Cu—N = 2.087 (2) Å] and amine N atoms [Cu—N = 2.138 (2) and 2.095 (2) Å] in the tetrahedrally twisted basal plane, and the `central' amine N atom coordinated axially [Cu—N = 2.183 (2) Å]. The oxime and oximate groups are linked by an O—H⋯O hydrogen bond, forming a pseudo‐cyclic pentadentate ligand, with an O⋯O distance of 2.395 (3) Å.