Abstract

The molecular and crystal structures of the title compound are reported. The molecular structure shows an oxalate-linked copper(II) two-dimensional coordination polymer where the knots are occupied by the [Cu(oxalate)₂]_n units and the edges by the [Cu(ethylenediamine)₂]_2n units which grow in the (011) plane. The compound crystallizes in the monoclinic system, space group P2₁/n, with a⊕=⊕15.579(3), b⊕=⊕8.073(2) and c⊕=⊕12.980(3) Å, β⊕=⊕118.67(2)°, Z⊕=⊕4, V⊕=⊕1432.3(6) Å³. The crystal structure is formed by a three-dimensional network via an extensive hydrogen-bonding network involving water molecules, nitrogen atoms from the ethylenediamine ligand and oxygen atoms from the perchlorate anions.