Synthesis, Crystal Structure, and Fluorescence of a New 3D Nd(III) Coordination Polymer Based on the Pyridine-3,5-Dicarboxylate and In Situ Generated Oxalate Ligand

Abstract

A new three-dimensional neodymium(III)-containing coordination polymer, [Nd₂(μ₂-ox)(μ₄-PDC)₂(H₂O)₄]•2H₂O (1) (H₂PDC = pyridine-3,5-dicarboxylic acid, H₂ox = oxalate acid), has been successfully synthesized under hydrothermal conditions via mixed-ligand of pyridine-3,5-dicarboxylate and in situ generated oxalate, and characterized by elemental analysis, IR, and single-crystal X-ray diffraction. The crystal structural analysis reveals that complex 1 displays an unusual three-dimensional framework with a pillared-layer containing a two-dimensional metal-organic layer architecture, and possesses a rare bimodal (4,5)-connected net with (4⁴.6²)(4⁴.6⁴.8²) topology. Moreover, complex 1 exhibits intense fluorescent emission at room temperature in the solid state.

Keywords:

• lanthanide coordination polymer
• crystal structure
• network topology
• luminescent property

Funding

This work was supported by the National Natural Science Foundation of China (No. 20971004 and 21171008), the Outstanding Youth Foundation of the Education Commission of Anhui Province, China (No. 2010SQRL108ZD).

Supplementary Material

Supplemental data for this article can be accessed at the publisher's website. CCDC 857791 contains the supplementary crystallographic data for complex 1. This data can be obtained free of charge via http://www.ccdc.cam.ac.uk/conts/retrieving.html, or from the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax: [phone]; or e-mail: [email protected].