A Novel Niobium Cluster Aqua Ion with Capping μ4 -Se Ligand

Artem L. Gushchin*, Bee Lean Ooi, Pernille Harris, Pavel A. Abramov, Maxim N. Sokolov

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review


The aqueous solution chemistry of niobium is underex-plored, and well characterized aqua complexes are scarce. In this con-tribution, a new niobium aqua complex was obtained by treatment of Zn-reduced ethanolic solution of NbCl5 with HCl in the presence of aselenide source (ZnSe). This is the first example of selenium containing aqua complex of niobium. The yellow-green aqua complex was isolated by cation-exchange chromatography and transformed into corresponding isothiocyanate complex by ligand exchange, which was crystallized as (PyH)4.5[H1.5Nb4SeO5(NCS)10]·0.5H2O. X-ray structural analysis revealed a metal-metal bonded tetranuclear{Nb44-Se)(μ2-O)5}4+ core with a capping μ4-Se ligand.
Original languageEnglish
JournalZeitschrift fuer Anorganische und Allgemeine Chemie
Issue number4
Pages (from-to)398-401
Number of pages5
Publication statusPublished - 2019


  • High-valent cluster
  • Niobium aqua ion
  • Niobium
  • Selenide bridging ligand
  • Crystal structure


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