Lanthanide coordination polymers based on Ln₂ cluster: Syntheses, crystal structures photoluminescence and magnetic properties

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• 作者：Han-Chung Wu ; Zih-Rong Jhu ; Gene-Hsiang Lee ; Shie-Ming Peng ; Chen-I. Yang ; Chun-Hsiung Kuei
• 关键词：Lanthanide ; Coordination polymer ; Photoluminescence ; Magnetic properties
• 刊名：Polyhedron
• 出版年：13 December, 2013
• 年：2013
• 卷：66
• 期：Complete
• 页码：34-38
• 全文大小：553 K

文摘

The synthesis of four lanthanide coordination polymers, [Ln(Dcam)(NO₃)(MeOH)₂]_n (Ln = Pr路1, Nd路2, Sm路3, and Eu路4; d-H₂cam = (+) d-camphoric acid) under solvothermal conditions is reported. Single-crystal X-ray diffraction analyses revealed that the compounds Pr路1-Eu路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 [Ln₂(O₂CR)₄(NO₃)₂(MeOH)₄], which is covalently-linked by cam^{2鈭?/sup> 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路4 were investigated and the direct current (dc) magnetic susceptibility of compounds Pr路1-Eu路4 were collected. The findings indicate that compounds Pr路1-Eu路4 are capable of both antiferromagnetic and spin-orbital interactions.}