Mn(Ⅱ) Based Coordination Polymer Involving 1,2,4,5-Benzenetetraboxylic Acid and 4,4-Bis(imidazol-1-ylmethyl)biphenyl: Synthetic, Structure and Magnetic Property

摘要

A novel Mn(Ⅱ) coordination polymer (CP),[Mn(BBA)0.5(BIYB)]n (1),was gained by the 1,2,4,5-benzenetetracarboxylic acid (H4BBA),4,4-bis(imidazol-l-ylmethyl)biphenyl (BIYB),and Mn(CH3COO)2·4H2O under hydrothermal reaction.CP 1 was characterized and structurally determined by elemental analyses,PXRD,IR spectra,thermal behaviors,and X-ray single-crystal diffraction.The framework structure of 1 shows a novel (2,5,6)-connected 3D network with a Schlafli symbol of (43.66.8)2(46.69)(6)2.It crystallizes in triclinic system,space group P(1),with a =7.5898(5),b =9.8201(6),c =14.1307(9) (A),α =97.5850(10),β =99.6810(10),γ =111.6580(10)°,V=943.01(10) (A)3,Z =2,C23H15MnN4O4,Mr=466.33,Dc=1.462 g/cm3,F(000) =476,S =1.082,R =0.0361 and wR=0.1008.The magnetic property of CP 1 was investigated.The weak antiferromagnetic interactions are observed between the Mn(Ⅱ) ions.