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 {[Cu6(H2tba)6]·2DMF·xSolvent}(1),{[Sc(H2tba)3(DMF)]·2DMF}n(2),and {[Fe(H2tba)2(H2O)2]·2DMF}n(3)(DMF=N,N-dimethylformamide),were obtained through diffusion reactions using Cu(ClO4)2·6H2O,Sc(ClO4)3·6H2O,and Fe(ClO4)3·9H2O as metal salts,respectively,and 2-thiobarbituric acid(H3tba)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.
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