Hydroxo-Lanthanide Cluster Organic Framework Built by Hexanuclear Cluster Units.

A novel hydroxo-lanthanide cluster organic framework, SmL( μ-OH)(HO)·HO ( 1), derived from the 4-pyridin-4-ylbenzoic acid (HL) has been hydrothermally made and structurally characterized by single crystal X-ray diffraction. Structure analysis shows the hexanuclear Sm cluster unit is composed of inorganic tetranuclear hydroxo [Sm(OH)] (Sm) cluster and dimeric [Sm(COO)] (Sm) core. The Sm cluster units are connected by L ligands to form a 2D Ln-based cluster organic framework. From the topological point of view, the layer architecture can be described as 4-connected sql net. Furthermore, the elemental analysis, PXRD, IR and TGA are also studied. [ABSTRACT FROM AUTHOR]