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Photochromism in Oxalatoniobates

Abstract

Addition of 2,2'-Bipyridine (bpy), 1,10-phenantroline (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. The bypyridinium salt 1 demonstrates remarkable photoactivity even under irradiation by daylight. The mechanism of the photoactivity was studied by diffuse reflectance (DR) spectra, EPR and quantum-chemical calculations.

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Publication details

The article was received on 29 Oct 2017, accepted on 02 Jan 2018 and first published on 09 Jan 2018


Article type: Paper
DOI: 10.1039/C7DT04077F
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Photochromism in Oxalatoniobates

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

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