Lanthanide coordination polymers based on Ln2 cluster: Syntheses, crystal structures photoluminescence and magnetic properties
Journal
Polyhedron
Journal Volume
66
Pages
34-38
Date Issued
2013
Author(s)
Abstract
The synthesis of four lanthanide coordination polymers, [Ln(Dcam)(NO 3)(MeOH)2]n (Ln = Pr·1, Nd·2, Sm·3, and Eu·4; d-H2cam = (+) d-camphoric acid) under solvothermal conditions is reported. Single-crystal X-ray diffraction analyses revealed that the compounds Pr·1-Eu·4 are isostructural and crystallize in the monoclinic space group P21/n. The structures of the compounds are consisted a dimeric sub-building unit (SUB) of [Ln 2(O2CR)4(NO3)2(MeOH) 4], which is covalently-linked by cam2- to a 2D grid layer and the layer is extended into a 3D supramolecular network by hydrogen bonding. The room temperature-photophysical properties of compounds Eu·4 were investigated and the direct current (dc) magnetic susceptibility of compounds Pr·1-Eu·4 were collected. The findings indicate that compounds Pr·1-Eu·4 are capable of both antiferromagnetic and spin-orbital interactions. © 2013 Elsevier Ltd. All rights reserved.
Type
journal article