Bis4-amino-35-bis­(pyridin-2-yl)-4H-124-triazole-κ2N2N3bis­(benzene-12-dicarb­oxy­lic acid-κO)copper(II) bis­(2-carb­oxy­benzoate)

摘要

In the complex cation of the title salt, [Cu(C12H10N6)2(C8H6O4)2](C8H5O4)2, the Cu^II atom, lying on an inversion center, exhibits a distorted octa­hedral geometry defined by four N atoms from two 4-amino-3,5-bis­(pyridin-2-yl)-4H-1,2,4-triazole ligands in the equatorial plane and two axial O atoms from two benzene-1,2-dicarb­oxy­lic acid ligands. In the crystal, the complex cations and the monodeprotonated 2-carb­oxy­benzoate anions are connected by O—H⋯O and N—H⋯O hydrogen bonds, forming a tape along [100]. Adjacent tapes are further linked into a three-dimensional arrangement via π–π stacking inter­actions between the triazole and benzene rings and between the pyridine and benzene rings [centroid–centroid distances = 3.6734 (14)/3.9430 (16) and 3.8221 (14) Å]. Intra­molecular N—H⋯N and O—H⋯O hydrogen bonds are also observed.