By use of a new ligand containing both salicylic acid moiety and salicylaldehyde Schiff base moiety, 5-（2-hydroxybenzylideneamino）-2-hydroxybenzoic acid （H3L）, a linear trinuclear Mn（II） complex was prepared. This complex crystallizes in triclinic, space group P1 with a = 12.0196（7）, b = 13.7440（13）, c = 15.7554（14） , α = 111.529（3）, β = 96.691（2）, γ = 94.802（2）o, C96H100Mn3N6O32, Mr = 2014.64, V = 2382.0（3） 3, Z = 1, μ = 0.478, Dc = 1.404 g/cm3, F（000） = 1049, R = 0.0554 and wR = 0.1610 for 8973 observed reflections （I 〉 2σ（I））. The complex consists of a trinuclear cluster and two solvate ethanol molecules. Three linearly disposed Mn atoms, with an inversion center on the central one, are bridged by six carboxylate groups from six bulky mono-anionic ligands （H2L-）, and the octahedral coordination spheres for each of the metal centers are thus formed, with the aid of additional ligation of two small molecules （ethanol and water） to both ends. The magnetic properties of the title complex are also included in this paper.
A new manganese compound [Mn8（tmp）2（Htmp）4（（CH3）3CCO2）4（py）2Cl2]·2py （1·2py, H3tmp = 1,1,1-tri（hydroxymethyl）propane, py = pyramid） has been synthesized and its structure was characterized by IR, elemental analysis and X-ray diffraction. Compound 1 belongs to the triclinic system, space group P1 with a = 13.378（5）, b = 14.334（5）, c = 15.012（6） , α = 107.637（5）, β = 95.635（3）, γ = 92.825（4）°, V = 2720.7（17） 3, Z = 1, C76H124N4O26Cl2Mn8, Mr = 2022.23, Dc = 1.234 Mg/m3, μ = 1.007 mm-1, F（000） = 1052, T = 293（2） K, the final R = 0.0755 and wR = 0.2163 for all 6463 observed reflections （I 〉 2σ（I））. X-ray analysis shows that the core of 1 contains a [Mn8] mixed-valence rod-like unit consisting of six edge-sharing triangles （Mn3）, each of which is bridged by a μ3-oxygen atom.
＜正＞Graphitic carbon nitride （g-C3N4）, a metal-free semiconductor, is a promising new class of photocatalysts f...
Jingfeng Dong1,Mei Wang1,*,Xueqiang Li1,Lin Chen1,Yu He1,Licheng Sun1,2 1State Key Laboratory of Fine Chemicals,DUT-KTH Joint Education and Research Center on Molecular Devices,Dalian University of Technology(DUT),Dalian,116012,China 2Department of Chemistry,Royal Institute of Technology(KTH),Stockholm,10044 Sweden
