Photochromism in oxalatoniobates

Alexandra A. Shmakova, Eugeniy M. Glebov, Valeri V. Korolev, Dmitri V. Stass, Enrico Benassi, Pavel A. Abramov, Maxim N. Sokolov

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2247-2255
Number of pages9
JournalDalton Transactions
Issue number7
Publication statusPublished - 1 Jan 2018
Externally publishedYes

ASJC Scopus subject areas

  • Inorganic Chemistry

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