A Dy(III)-K(I)-biphenyl-3,3′-disulfonyl-4,4′-dicarboxylate Compound: Structure and Luminescence

A coordination polymer based on the carboxylate-sulfonate ligand of biphenyl-3,3'-disulfonyl-4,4'-dicarboxylate (BPDSDC4-), namely, [DyK(BPDSDC)(H2O)(4)], (1), was synthesized and characterized. Compound 1 crystallizes in the triclinic system, space group P (1) over bar with a = 6.3950(4), b = 12.8171(9), c = 15.8005(10) angstrom, alpha = 109.5430(10), beta = 90.8050(10), gamma = 102.7170(10)degrees, V = 1185.12(13) angstrom(3), Z = 2, C14H14O14S2KDy, M-r = 671.97, D-c = 1.883 g/cm(3), = 3.567 mm(-1), F(000) = 654, the final R = 0.0262 and wR = 0.0718 for 4408 observed reflections with I > 2 sigma(I). In compound 1, the eight-coordinated Dy(III) and nine-coordinated K(I) ions are connected by the carboxylate and sulfonate groups as well as bridging water molecules to generate a one-dimensional (1D) ribbon structure. The ribbons are linked by the biphenyl moieties of BPDSDC4- ligands to give a two-dimensional (2D) double layered structure. The 2D layers are further linked by the interlayered hydrogen bonds between the coordinated water molecules and sulfonate oxygen atoms to form a three-dimensional (3D) packing. Compound 1 shows characteristic Dy(III) luminescence emission.