Crystal Structure And Hirshfeld Surface Analysis Of Di­Aqua­Bis­(Isonicotinamide-Κn)Bis­(2,4,6-Tri­Methyl­Benzoato-Κo 1)Nickel(II) Dihydrate

Abstract

In the title NiII complex, the divalent Ni ion occupies a crystallographically imposed centre of symmetry and is coordinated by two O atoms from the carboxyl­ate groups of two 2,4,6-tri­methyl­benzoate ligands, two N atoms from the pyridyl groups of two isonicotinamide ligands and two water mol­ecules in a slightly distorted octa­hedral geometry. Hirshfeld surface analysis indicates that the most important contributions for the crystal packing are from H⋯H (59.8%), O⋯H/H⋯O (20.2%) and C⋯H/H⋯C (13.7%) inter­actions., In the title NiII complex, [Ni(C10H11O2)2(C6H6N2O)2(H2O)2]·2H2O, the divalent Ni ion occupies a crystallographically imposed centre of symmetry and is coordinated by two O atoms from the carboxyl­ate groups of two 2,4,6-tri­methyl­benzoate (TMB) ligands [Ni—O = 2.0438 (12) Å], two N atoms from the pyridyl groups of two isonicotinamide (INA) ligands [Ni—N = 2.1506 (15) Å] and two water mol­ecules [Ni—O = 2.0438 (12) Å] in a slightly distorted octa­hedral geometry. The coordinating water mol­ecules are hydrogen bonded to the non-coordinating carboxyl­ate O atom of the TMB ligand [O⋯O = 2.593 (3) Å], enclosing an S(6) hydrogen-bonding motif. Two solvent water mol­ecules are also present in the formula unit. In the crystal, a network of inter­molecular N—H⋯O and O—H⋯O hydrogen bonds link the complexes into a three-dimensional array. Hirshfeld surface analysis indicates that the most important contributions for the crystal packing are from H⋯H (59.8%), O⋯H/H⋯O (20.2%) and C⋯H/H⋯C (13.7%) inter­actions.