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Two Cd(II) coordination polymers have been synthesized with pyrazine-1,4-dioxide (L1), 2-methylpyrazine-1,4-dioxide (L2), and thiocyanate anion as mixed bridge ligands. Crystal data for complex 1 [Cd(μ1,3-SCN-)2(L1)]n: monoclinic system, space group P21/n with a = 6.8342(11), b = 14.349(2), c = 10.5443(16) , β = 98.534(2)°, V = 1022.5(3) 3, Z = 4, C6H4CdN4O2S2, Mr = 340.65, Dc = 2.213 g/cm3, F(000) = 656 and μ = 2.527 mm-1; and those for 2: triclinic system, space group P1 with a = 7.877(3), b = 8.693(3), c = 8.754(3) , α = 102.297(6), β = 102.464(6), γ = 98.480(6)°, V = 560.0(3) 3, Z = 2, C7H6CdN4O2S2, Mr = 354.68, Dc = 2.103 g/cm3, F(000) = 344 and μ = 2.311 mm-1. 1 shows a three-dimensional network structure, and along the c direction a one-dimensional chain is constructed by the coordination of Cd(II) ions with μ1,3-SCN- ligands, and the L1 bridging ligands made the chains connect each other leading to the formation of a three-dimensional structure. For 2, the one-dimensional chains along the b axis are generated by the coordination of L2 bridging ligands with Cd(II) ions, and the chains are further joined by μ1,3-SCN- bridging ligands forming a two-dimensional sheet structure on the (1 0 –1) plane. Both complexes 1 and 2 exhibit strong fluorescence emission.
Two Cd (II) coordination polymers have been synthesized with pyrazine-1,4-dioxide (L1), 2-methylpyrazine- space group P21 / n with a = 6.8342 (11), b = 14.349 (2), c = 10.5443 (16) , β = 98.534 (μ1,3-SCN-) 2 2) °, V = 1022.5 (3) 3, Z = 4, C6H4CdN4O2S2, Mr = 340.65, Dc = 2.213 g / cm3, F (000) = 656 and μ = 2.527 mm-1; and those for 2: triclinic space group P1 with a = 7.877 3, b = 8.693 3, c = 8.754 3, a = 102.297 6, β = 102.464 6, γ = 98.480 6, V = 560.0 (3) 3, Z = 2, C7H6CdN4O2S2, Mr = 354.68, Dc = 2.103 g / cm3, F (000) = 344 and μ = 2.311 mm-1. 1 shows a three-dimensional network structure, and along the c direction a one-dimensional chain is constructed by the coordination of Cd (II) ions with μ1,3-SCN-ligands, and the L1 bridging ligands make the chains connect each other leading to the formation of a three-dimensional structure For 2, the one-dimensional chains along the b axis are generated by the coordination of L2 bridging ligands with Cd (II) ions, and the chains are further joined by μ1,3-SCN-bridging ligands forming a two-dimensional sheet structure on the (1 0 -1) plane. Both complexes 1 and 2 exhibit strong fluorescence emission.