Issue 45, 2019

Controlled one pot synthesis of polyoxofluorovanadate molecular hybrids exhibiting peroxidase like activity

Abstract

Three unique mixed-valence polyoxofluorovanadate clusters have been synthesized through a facile preparation process. The structure of these clusters is controlled by the addition of organic ligands. Single-crystal X-ray diffraction revealed that the clusters have the formula (XyH2)4[VV10VIV4O14(μ-O)103-O)103-F)2F4] (1), (Xy = m-xylylenediamine), (pyH)4(H)2[VV10VIV2O12(μ-O)83-O)103-F)2(pic)2] (2) and (pyH)4(H)3(Na+)[VV7VIV2O9(μ-O)83-O)45-F)(pic)4]2 (3), (py = pyridine, pic = picolinate), with 2 and 3 representing the first examples of polyoxofluorovanadate clusters coordinated to a chelating ligand. The electron paramagnetic resonance (EPR) spectroscopy of 1 revealed that the spins of the VIV centers are coupled to each other, in contrast to the isolated spins of the isostructural [VV12VIV2O16(μ-O)103-O)103-F)2(L)2]6−, where L: im = imidazole (4); py (5). The trigonal bipyramidal coordinated VV atoms of 1, 4 and 5 mimic the structure of the active site of the vanadium dependent peroxidases and 4 and 5 exhibit peroxidase like activity.

Graphical abstract: Controlled one pot synthesis of polyoxofluorovanadate molecular hybrids exhibiting peroxidase like activity

Supplementary files

Article information

Article type
Paper
Submitted
17 abr 2019
Accepted
08 jun 2019
First published
10 jun 2019

New J. Chem., 2019,43, 17595-17602

Controlled one pot synthesis of polyoxofluorovanadate molecular hybrids exhibiting peroxidase like activity

M. Nicolaou, C. Drouza and A. D. Keramidas, New J. Chem., 2019, 43, 17595 DOI: 10.1039/C9NJ01999E

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