Bis(μ-3,5-dinitro-2-oxidobenzoato)-κ3O1,O2:O1;κ3O1:O1,O2-bis[aqua(2-phenyl-1,3,7,8-tetraazacyclopenta[l]phenanthrene-κ2N7,N8)cobalt(II)]

Abstract

In the title compound, [Co2(C7H2N2O7)2(C19H12N4)2(H2O)2], the CoII atom is six-coordinated by two N atoms from a 2-phenyl-1H-1,3,7,8,-tetraazacyclopenta[l]phenanthrene (L) ligand, three O atoms from two 3,5-dinitro-2-oxidobenzoate (3,5-dinitrosalicylate or DNSA) ligands and one O atom from a water molecule in a distorted octahedral geometry. The CoII atoms are bridged by two carboxylate O atoms from two DNSA ligands, forming a centrosymmetric dinuclear structure. Neighbouring dinuclear units interact with each other through two types of π–π interactions between the L ligands [shortest centroid–centroid distance = 3.646 (3) Å] and between the L and DNSA ligands [shortest atom-to-centroid distance = 3.794 (3) Å]. N—H...O, O—H...N and O—H...O hydrogen bonds are observed, which lead to a three-dimensional structure.