Issue 7, 2018

Photochromism in oxalatoniobates

Abstract

Addition of 2,2′-bipyridine (bpy), 1,10-phenanthroline (phen) or 2-aminopyridine (2-NH2-py) to aqueous solutions of (NH4)[NbO(C2O4)2(H2O)2]·3H2O (Nb-Ox) yields tris-oxalate complexes (bpyH2)(bpyH)[NbO(C2O4)3]·2H2O (1), (phenH)3[NbO(C2O4)3]·3H2O (2), and (2-NH2-pyH)3[NbO(C2O4)3]·2H2O (3), which were characterised by XRD, IR and EA. Bipyridinium salt 1 demonstrates remarkable photoactivity even under irradiation by daylight. The nature of the photoactivity was studied by diffuse reflectance (DR) spectroscopy, ESR and quantum-chemical calculations.

Graphical abstract: Photochromism in oxalatoniobates

Supplementary files

Article information

Article type
Paper
Submitted
29 Oct 2017
Accepted
02 Jan 2018
First published
09 Jan 2018

Dalton Trans., 2018,47, 2247-2255

Photochromism in oxalatoniobates

A. A. Shmakova, E. M. Glebov, V. V. Korolev, D. V. Stass, E. Benassi, P. A. Abramov and M. N. Sokolov, Dalton Trans., 2018, 47, 2247 DOI: 10.1039/C7DT04077F

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