Synthesis, Crystal Structure and Luminescence of a Trinuclear Magnesium Coordination Polymer Based on a Triangle Flexible Carboxylic Ligand

A novel two-dimensional metal organic coordination compound based on flexible l,3,5-tri（4-carboxyphenoxy）benzene（H3TCPB）,{[Mg1.5（TCPB）（DMF）（H2O）]·（DMF）}n（1）,has been prepared and structurally characterized by single-crystal X-ray diffraction,TGA,and PXRD measurements.Complex 1 crystalizes in triclinic,space group Pi with a = 10.2521（6）,b =11.0974（7）,c = 16.1113（9） A,C33H31Mg1.5N2O12Mr = 684.06,V= 1669.46（17） A3,Z = 2,Dc =1.361 g·cm-3,μ = 0.129 mm-1,F（000） = 714,3.06 ≤θ≤ 25°,λ（MoKα） = 0.71073 A,T= 273（2） K,the final R = 0.0386,wR = 0.0892 and S= 1.031.X-ray diffraction analysis reveals that complex 1possesses a two-dimensional framework constructed by trinuclear Mg SBUs and three-connected TCPB3- linker.In addition,the solid state luminescent property of complex 1 was also investigated at room temperature.