Abstract

Colourless single crystals of Na3YCl6, crystallizing in the cryolite structure type and isotypic with Na3GdCl6-II and Na3MCl6 (M = Sc, Dy–Lu), were prepared from a flux of YCl3, NaCN and NaN3; the trivalent yttrium is octahedrally coordinated by chlorine atoms with an average Y—Cl distance of 2.62 A. The Y atom and one Na atom lie on centres of symmetry.

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