Title: Hydrothermal Synthesis and Crystal Structure of a Novel Lanthanide Coordination Polymer Bridged by Flexible Cyclohexane-1,2,3,4,5,6-hexacarboxylate and Rigid Oxalate Ligands
Abstract: Reaction of Tb2(ox)3·6H2O and cyclohexane-1,2,3,4,5,6-hexacarboxylic acid hydrate(H6LⅠ·H2O)(cis-chair conformation LⅠ: a,e,a,e,a,e) resulted in formation of a novel three-dimensional lanthanide coordination polymer [Tb4(LⅡ)(ox)3(H2O)8](trans-chair conformation LⅡ: e,e,e,e,e,e;ox: oxalate) under hydrothermal condition,which was characterized by elemental analysis and IR.X-ray diffraction crystal structure analysis shows that the complex crystallizes in triclinic system,space group P1 with a=0.602 03(4) nm,b=1.082 78(8) nm,c=1.294 46(9) nm,α=67.908 0(10)°,β=82.109 0(10)°,γ=83.887 0(10)°,V=0.773 07(9) nm3,Z=2.In the formation of the complex,the cis-chair H6LⅠ ligand transformed to the trans-chair LⅡ ligand,which adopts μ8-bridging mode connecting the Tb atoms to form two-dimensional(Tb-LⅡ) layers with channels.The one-dimensional(Tb-ox) chains bridged by μ2-and μ4-ox ligands link the(Tb-LⅡ) layers to generate a three-dimensional framework with channels,which were filled with ox ligands and water molecules through coordination and hydrogen interactions.CCDC: 790926.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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