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A Novel Niobium Cluster Aqua Ion with Capping μ 4 ‐Se Ligand
Author(s) -
Gushchin Artem L.,
Ooi, BeeLean,
Harris Pernille,
Abramov Pavel A.,
Sokolov Maxim N.
Publication year - 2019
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201800476
Subject(s) - niobium , selenide , chemistry , ligand (biochemistry) , metal , inorganic chemistry , selenium , aqueous solution , cluster (spacecraft) , ion exchange , niobium oxide , isothiocyanate , ion chromatography , ion , crystallography , organic chemistry , biochemistry , receptor , computer science , programming language
The aqueous solution chemistry of niobium is underexplored, and well characterized aqua complexes are scarce. In this contribution, a new niobium aqua complex was obtained by treatment of Zn‐reduced ethanolic solution of NbCl 5 with HCl in the presence of a selenide 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 [H 1.5 Nb 4 SeO 5 (NCS) 10 ] · 0.5H 2 O. X‐ray structural analysis revealed a metal‐metal bonded tetranuclear {Nb 4 (μ 4 ‐Se)(μ 2 ‐O) 5 } 4+ core with a capping μ 4 ‐Se ligand.