Crystal structure determination of (triethyleneglycol)bis(3,5-dinitrobenzoate) strontium(II) monohydrate

The complex {[Sr(C₇H₃N₂O₆)₂(C₆H₁₄O₄)]·H₂O}₂ is a centrosymmetric dimer. Each Sr^{2 +} in the cluster is nine coordinated by four oxygens of triethyleneglycol and the carboxylate oxygens of 3,5-dinitrobenzoate (DNB) anions. One of the DNBs behaves as a symmetrical bidentate chelating ligand whereas the other acts as a highly unsymmetrical, tridentate, chelating-cum-bridging ligand. The crystal is triclinic with a space group P1. The unit cell dimensions are a = 14.955(2), b = 12.730(2), c = 7.389(2) Å, = 73.06(1)°, = 99.56(1)°, = 80.02(2)° , V = 1289.84 ų, = 0.71070 Å, Z = 2. The centrosymmetrically related Sr^{2 +} is separated by a short distance of 4.565(1) Å, which results in a closely packed cluster of monomers. Both the alcoholic oxygens are H-bond donors toward the carboxylate oxygens of one of the DNB anion. The water molecule occupies intermolecular spaces.