A one-dimensional nickel(II) coordination polymer containing 2,6-dipicolinate and dipyrido[3,2-a:2′,3′-c]phenazine

A new coordination polymer, catena-poly[[(dipyrido[3,2-a:2′,3′-c]phenazine-κ²N,N′)nickel(II)]-μ-2,6-dipicolinato-κ⁴O²,N,O⁶:O^2′], [Ni(C₇H₃NO₄)(C₁₈H₁₀N₄)]_n, exhibits a one-dimensional structure in which 2,6-dipicolinate acts as a bridging ligand inter­connecting adjacent nickel(II) centers to form a chain structure. The asymmetric unit contains one Ni^II center, one dipyrido[3,2-a:2′,3′-c]phenazine ligand and one 2,6-dipicolinate ligand. Each Ni^II center is six-coordinated and surrounded by three N atoms and three O atoms from one dipyrido[3,2-a:2′,3′-c]phenazine ligand and two different 2,6-dipicolinate ligands, leading to a distorted octa­hedral geometry. Adjacent chains are linked by π–π stacking inter­actions and weak inter­actions to form a three-dimensional supra­molecular network.