Abstract
The Fe(III) complex [FeIII(bpdc)(Hbpdc)] (1) (bpdc = 2,2′-bipyridyl-6,6′-dicarboxylate and Hbpdc = 2,2′-bipyridyl-6′-carboxyl-6-carboxylate) and the Co(III) complex [CoIII(bpc)2]PF6 (2) (bpc = 2,2′-bipyridyl-6-carboxylate) have been synthesized by the reactions of 2,2′-bipyridyl-6,6′-dicarboxylic acid (H2bpdc) with the corresponding metal salts under hydrothermal conditions. The X-ray crystal structures of complexes 1 and 2 were determined. Both of them are mononuclear compounds. In complex 1, the iron center is eight-coordinated by one bpdc ligand and one Hbpdc ligand resulting in a distorted dodecahedron geometry. On the other hand, decarboxylation of H2bpdc occurred in the preparation of compound 2, which is six-coordinated by two bpc ligands with a distorted octahedral geometry. The complexes were further investigated by spectroscopic methods, thermal gravimetric analyses or cyclic voltammetry.
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The work described in this paper was supported by the National Natural Science Foundation of China (Grant No. 21801058) and the Anhui Provincial Natural Science Foundation (Grant No. 1808085QB28).
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Xie, J., Zheng, B. & Li, B. Synthesis, crystal structures and characterization of iron(III) and cobalt(III) complexes bearing 2,2′-bipyridylcarboxylate ligands. Transit Met Chem 44, 425–430 (2019). https://doi.org/10.1007/s11243-019-00318-2
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DOI: https://doi.org/10.1007/s11243-019-00318-2