The cocrystal μ-oxalato-κ4 O 1O 2:O 1′O 2′-bis­(aqua­(nitrato-κO){1-(2-pyridyl-κN)eth­ylidenehydrazine-κN}copper(II)) μ-oxalato-κ4 O 1O 2:O 1′O 2′-bis­((methanol-κO)(nitrato-κO){1-(2-pyridyl-κN)eth­ylidenehydrazine-κN}copper(II)) (1/1)

摘要

The title cocrystal, [Cu2(C2O4)(NO3)2(C7H9N3)2(H2O)2][Cu2(C2O4)(NO3)2(C₇H₉N₃)₂(CH₄O)₂], is a 1:1 cocrystal of two centrosymmetric Cu^II complexes with oxalate dianions and Schiff base ligands. In each mol­ecule, the Cu^II centre is in a distorted octa­hedral cis-CuN₂O₄ environment, the donor atoms of the N,N′-bidentate Schiff base ligand and the bridging O,O′-bidentate oxalate group lying in the equatorial plane. In one mol­ecule, a monodentate nitrate anion and a water mol­ecule occupy the axial sites, and in the other, a monodentate nitrate anion and a methanol mol­ecule occupy these sites. In the crystal structure, inter­molecular N—H⋯O, O—H⋯O and N—H⋯N hydrogen bonds link the mol­ecules into a network. Weak intra­molecular N—H⋯O inter­actions are also observed.