Self.assembly of zero.dimensional cluster {[Cu6(H2tba)6]•2DMF • xSolvent}, 2D sheet {[Sc(H2tba)3(DMF)]•2DMF} n and 3D network {[Fe(H2tba)2(H2O)2]•2DMF} n based on 2.thiobarbituric acid

Three complexes with different structures, namely {[Cu-6(H(2)tba) (6)] center dot 2DMF center dot xSolvent} (1), {[Sc(H(2)tba) 3 (DMF)] center dot 2DMF} n (2), and {[Fe(H(2)tba)2(H2O)(2)] center dot 2DMF} n (3) (DMF=N, N - dimethylformamide), were obtained through diffusion reactions using Cu(ClO4) 2 center dot 6H2O, Sc(ClO4) 3 center dot 6H2O, and Fe(ClO4) 3 center dot 9H2O as metal salts, respectively, and 2- thiobarbituric acid (H(3)tba) as ligand. Complexes 1 - 3 were further characterized by FTIR, elemental analysis, TGA, and powder X- ray diffraction techniques. Single-crystal X- ray diffraction analysis reveals that complex 1 is a hexa- copper cluster with a trigonal antiprism structure, complex 2 is a 2D sheet structure, and complex 3 is a 3D network structure. Complex 1 exhibited strong luminescent emission spectra at 735 nm with an excitation peak at 390 nm. CCDC: 2298695, 1; 2298696, 2; 2298697, 3.