1. A three‐dimensional gadolinium organic framework based on a pyridinedicarboxylic acid organic linker with a paddle‐wheel‐type network structure.
- Author
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Tiwari, Ranjay K., Saini, Mukesh Kumar, Behera, Jogendra N., and Hussain, Firasat
- Subjects
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COORDINATION polymers , *QUINOLINIC acid , *ORGANIC acids , *GADOLINIUM , *ORGANIC bases , *X-ray powder diffraction , *DIMETHYLFORMAMIDE - Abstract
A new gadolinium(III)–pyridine‐2,5‐dicarboxylic acid (GdIII–2,5‐H2pdc)‐based three‐dimensional coordination polymer, namely, poly[dimethylazanium [bis(μ‐pyridine‐2,5‐dicarboxylato)gadolinium(III)]], {[(CH3)2NH2][Gd(C7H3NO4)2]}n, CP‐1, has been synthesized via a typical solvothermal method. The as‐synthesized material was characterized in the solid state using single‐crystal X‐ray diffraction, powder X‐ray diffraction, thermogravimetric analysis and FT–IR spectroscopy. During the synthesis of CP‐1, the in situ dimethylformamide (DMF) promotes the formation of a dimeric unit and these act as secondary building blocks in the assembly of a three‐dimensional anionic {[Gd(pdc)2]−}∞ framework. The framework has channels along the c axis which are filled by dimethylazanium cations. Interestingly, the framework shows a helical‐type assembly running down the a axis. A Hirshfeld surface analysis of CP‐1 suggests that extra stability is provided by hydrogen‐bonding interactions. The magnetic properties of CP‐1 showed weak antiferromagnetic couplings between adjacent Gd3+ ions. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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