Tetraaquadodekakis-μ2-chlorido-diiodido-octahedro-hexaniobium(12 Nb—Nb) tetrahydrofuran octasolvate

Abstract

The title compound, [Nb6Cl12I2(H2O)4]·8THF (THF is tetrahydrofuran, C4H8O), comprises an uncharged niobium cluster unit surrounded by THF solvent molecules. The edges of the {Nb6} octahedron are μ2-coordinated by twelve chlorido ligands. Four in-plane (equatorial plane) aqua ligands and two iodido ligands coordinating above and below the plane are bound at the corners of the {Nb6} atomic octahedron. O—H...O hydrogen bonds are formed between the aqua ligands and the THF solvent molecules; one THF molecule is disordered over two positions with the major component having a site occupancy of 0.64 (2).

Keywords

• crystal structure
• metal atom cluster
• niobium
• chloride
• structure determination