Two 2D inorganic–organic hybrid materials constructed from (V2O6)n2n− chains linked through metal–organic units [Cd(ip)]/[Ni(ip)(H2O)]

Crystal structure of a binuclear nickel(II) complex constructed of 1H-imidazo[4,5-f][1,10]phenanthroline and doubly deprotonated benzene-1,3,5-tricarboxylic acid

The title complex, [Ni₂(C₉H₄O₆)₂(C₁₃H₈N₄)₂(H₂O)₄]·2H₂O, bis­(μ-5-carb­oxy­benzene-1,3-di­carboxyl­ato-κ²O¹:O^1′)bis­[di­aqua(1H-imidazo[4,5-f][1,10]phenanthroline-κ²N⁷,N⁸)nickel(II)] di­hydrate, was obtained under solvothermal conditions by the reaction of benzene-1,3,5-tricarboxylic acid (H₃BTC) with Ni(NO₃)₂ in the presence of 1H-imidazo[4,5-f][1,10]phenanthroline (IP). The crystal has triclinic (P-1) symmetry with a centrosymmetric binuclear nickel(II) cluster. The Ni^II atom is coordinated by two N atoms from a chelating 1H-imidazo[4,5-f][1,10]phenanthroline ligand, two carboxyl­ate O atoms from two 5-carb­oxy­benzene-1,3-di­carboxyl­ate ligands and two water mol­ecules in a slightly distorted octa­hedral geometry. Two carboxyl­ate groups bridge two Ni^II cations, forming the binuclear complex. Extensive N—H⋯O, O—H⋯O and O—H⋯N hydrogen bonding is present in the crystal structure, forming a three-dimensional supermolecular framework. Weak π–π stacking is observed between parallel HBTC²⁻ and IP ring systems, the face-to-face separation being 3.695 (2) Å.

Di-μ-sulfato-κ4O:O′-bis[diaqua(1H-imidazo[4,5-f][1,10]phenanthroline)manganese(II)] dihydrate

In the title centrosymmetric dinuclear compound, [Mn₂(SO₄)₂(C₁₃H₈N₄)₂(H₂O)₄]·2H₂O, the Mn^II atom is octa­hedrally coordinated by two N atoms from a 1H-imidazo[4,5-f][1,10]phenanthroline (ip) ligand, two O atoms belonging to two bridging sulfate anions and two water O atoms. In the crystal structure, the complex mol­ecules and the uncoodinated water mol­ecules are connected by O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds into a three-dimensional network. A π–π stacking inter­action between the pyridyl ring of the ip ligand and the benzene ring of the neighboring ligand [centroid–centroid distance = 3.579 (2) Å] is also observed.

Di-μ-sulfato-bis-[diaqua-(1H-imidazo[4,5-f][1,10]phenanthroline)iron(II)] dihydrate

The title dinuclear Fe(II) complex, [Fe(2)(SO(4))(2)(C(13)H(8)N(4))(2)(H(2)O)(4)]·2H(2)O, is centrosymmetric. Two sulfate anions bridge two Fe(II) cations to form the binuclear complex. Each Fe(II) cation is coordinated by two N atoms from a 1H-imidazo[4,5-f][1,10]phenanthroline (IP) ligand, two O atoms from two sulfate anions and two water mol-ecules in a distorted octa-hedral geometry. Extensive O-H⋯O, N-H⋯O and O-H⋯N hydrogen bonding is present in the crystal structure. Weak π-π stacking is observed between parallel IP ring systems, the face-to-face separation being 3.428 (14) Å.