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The title compound, [Cu(C 2 O 4 ) 2 (C 6 H 14 NO) 2 ], was synthesized by mixing diacetonamine hydrogen oxalate and copper sulfate in ethanol/water. The mol­ecule is centrosymmetric, so two pairs of equivalent ligands lie  trans  to each other. The Cu II  center, located on a position with 2/ m  site symmetry, is six-coordinated by four O atoms from two oxalate ligands at short distances and the carbonyl O atoms from the 4-amino-4-methyl­pentan-2-one ligands at longer distances. Mol­ecules are linked through inter­molecular N—H⋯O hydrogen bonds between the amino groups and carbonyl O atoms; no intra­molecular hydrogen bonds are formed.

Bis(4-ammonio-4-methylpentan-2-one-κO)dioxalato-κ4O1,O2-copper(II)

Bis(4-ammonio-4-methylpentan-2-one-κO)dioxalato-κ⁴O¹,O²-copper(II)