Structure and Magnetic Properties of a Manganese Complex with 1-Carboxymethylpyridinium-3-carboxylate

摘要

One complex with a zwitterionic dicarboxylate ligand,[Mn(L)(N3)]n1(L=1-carboxymethylpyridinium-3-carboxylate),was synthesized and structurally characterized.Complex 1crystallizes in triclinic,space group P1 with a=7.570(2),b=7.808(2),c=9.232(3),=94.450(19)o,V=489.0(3)3,Z=2,Mr=277.11,Dc=1.882 g/cm3,F(000)=278,μ=1.359 mm-1,S=1.021,the final R=0.0509 and wR=0.1149 for 2236 observed reflections with I>2(I).Complex 1 consists of two-dimensional coordination layers in which the anionic uniform chains with mixed triple bridges(one end-on(EO)azide and two syn-syn carboxylates)are cross-linked by the flexible cationic N-methylpyridinium spacers.Magnetic studies demonstrated that the triple bridge in 1 transmits antiferromagnetic coupling between the Mn(II)ions.