Two-dimensional carboxylate bridged network of europium(III)-transition metal(II) glutarate compounds.
Four new heterometallic glutarate coordination polymers, [Eu2M(H2O)4][O2C(CH2)3CO2]4.2H2O (M = Mn (1), Fe (2), Co (3) and Ni (4)) have been obtained under hydrothermal synthesis. The single-crystal X-ray diffraction analyses showed that they have two-dimensional frameworks based on the linear polyhedral chains consisting of two nine-coordinated Eu(III)O9 and a six-coordinated M(II)O6. These 1-D MO6-Eu2O16 chains are cross-linked by glutarate ligands as an interchain pillared architecture, whose conformations vary depending upon the transition metals. The magnetic behavior of the compounds show a weak antiferromagnetic interaction, in which shielding of the 4f electrons by the outer shell electrons effectively precludes significant coupling interactions between the Eu-4f electrons and transition metal (M)-3d electrons.
Kim
Yoojin
Y
Department of Chemistry-BK21 and the Institute of Basic Sciences, Sungkyunkwan University, Suwon 440-746, Korea.
Park
Yunju
Y
Jung
Duk-Young
DY
D002264:Carboxylic Acids / Q000737:chemistry*; D003460:Crystallization; D018360:Crystallography, X-Ray; D005063:Europium / Q000737:chemistry*; D005977:Glutarates / Q000737:chemistry*; D008280:Magnetics; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000737:chemistry*; D013696:Temperature; D028561:Transition Elements / Q000737:chemistry*
D002264:Carboxylic Acids; D005977:Glutarates; D009942:Organometallic Compounds; D028561:Transition Elements; D005063:Europium