2 O, the Ni II cation is octahedrally coordinated by trans carboxylate O-atom donors from two crystallographically distinct monodentate hydrogen phthalate (Hpht À ) ligands, two trans aqua ligands, and trans pyridyl N-atom donors from two crystallographically distinct N,N 0 -(ethane-1,2-diyl)bis-(isonicotinamide) (ebin) ligands. Extensive O-HÁ Á ÁO and O-HÁ Á ÁN hydrogen-bonding patterns involving the water molecules of crystallization anchor neighboring coordination complexes into a three-dimensional network.
Structure descriptionThe title coordination complex was isolated during an attempt to prepare a nickel phthalate (pht) coordination polymer containing N,N 0 -(ethane-1,2-diyl)bis(isonicotinamide) (ebin) co-ligands. Nickel phthalate coordination polymers have displayed different structural topologies and property behavior depending on the nature of the neutral nitrogen-base co-ligand. For example, {[(pht) 2 Ni(dpa) 2 Ni(H 2 O) 4 ] . H 2 O} n (dpa = 4,4 0 -dipyridylamine) displays a chain structure (Braverman et al., 2007). The compound [Ni(pht)(4-meim) 2 (H 2 O] n (4-meim = 4-methylimidazole), likewise with a one-dimensional structure, shows a negative influence on protease enzyme synthesis in fungal cultures in vivo (Filippova et al., 2010). [Ni(pht)(1,4-bib)] n [1,4-bib = 1,4-bis(imidazol-lylmethyl)benzene] exhibits a two-dimensional 6 3 herringbone topology and has nonlinear optical behavior (Zhao et al., 2015). [Ni(pht)(bbi)] n [bbi = 1,1 0 -(1,4-butanediyl)bis(imidazole)] manifests a 4-connected three-dimensional 6 5 8 cds topology (Qi et al., 2008).