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(dipyrido3,2‐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 dipyrido3,2‐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 dipyrido3,2‐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.