Synthesis,Crystal Structure and Thermal Property of a 2D Brick Wall Framework Constructed from a New Mononuclear Complex

T One new coordination polymer with the chemical formulaCoCu2L2·K.2·1.5C2H5OH]n(H4L=2-hydroxy-3-(E)-({3-(2-hydroxybenzoyl)amino]propyl}imino)methyl]benzoic acid)has been synthesized based on the slow diffusion method,and characterized by IR spectroscopy,thermalgravimetric and X-ray diffraction analysis.It crystallizes in the monoclinic system,space group P21/n with α=11.98860(10),b=24.4279(3),c=14.9008(2)(A),β=104.7490(10)°,V=4220.01(8)(A)3,Z=2,Mr=1009.94,Dc=1.590 g/cm3,F(000)=2056,μ(MoKα)=1.649 mm-1,the final R=0.0411 and wR=0.1178 for 5920 observed reflections with Ⅰ＞2σ(Ⅰ).The compound possesses a 2D brick wall structure constructed from trinuclear units.