Self-assembly of three CdII- and CuII-containing coordination polymers from 4,4′-dipyridyl disulfide

Three new organic/inorganic coordination polymers, [{Cu(4-DPDS)(2)(H2O)}.2NO(3).3H(2)O](n) (1), [{Cu(4-DPDS)(2)(SO4)}. 1.5H2O.CH3OH](n) (2), and [Cd(4-DPDS)2Cl(2)](n) (3), have been synthesized by using the flexible ligand 4,4'-dipyridyl disulfide (4-DPDS). Complex I crystallized in the Ibca space group: a = 10.5275(6), b = 20.2670(1), c = 27.235(1), V = 5811.5(6) Angstrom(3), Z = 16. Complex 2 crystallized in the Pnna space group: a 10.547(2), b = 14.201(2), c = 19.667(3) Angstrom, V = 2945.8(8) Angstrom(3), Z = 8. Complex 3 crystallized in the P2(1)/c space group: a = 7.6146(3), b = 18.2606(8), c = 9.3203(2) Angstrom, beta = 100.26(1)degrees, V = 1275.24(8) Angstrom(3), Z = 4. The three coordination polymers display a variety of structural architectures, ranging from double-stranded chains (1) to two-dimensional channels (2) and two-dimensional, puckered, grid-like arrays (3). Magnetic characterizations show that complex 1 exhibits antiferromagnetic interactions while 2 is ferromagnetic. Solid-state fluorescence results reveal that 3 exhibits fluorescence emissions at 418 and 575 nm (lambda(ex) = 314 nm). (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.