Crystal structure of potassium orthoselenate(IV), K₂SeO₃.

ABSTRACT: Crystal structure data for potassium orthoselenate(IV), K₂SeO₃, are reported for the first time. Colorless, block-shaped crystals were grown in a potassium hydro-flux, i.e. under ultra-alkaline conditions, within 10 h. K₂SeO₃ crystallizes isostructural with Na₂SO₃ and K₂TeO₃ in the trigonal space group P with lattice parameters a = 6.1063 (4) Å and c = 6.9242 (4) Å at 100 (1) K. In the trigonal-pyramidal, C _3v-symmetric [SeO₃]^2- anion, the bond length is 1.687 (1) Å, and the bond angle is 103.0 (1)°. Two of the three unique potassium cations exhibit a coordination number of six, and the third a coordination number of nine.

SUBMITTER: Albrecht R 

PROVIDER: S-EPMC9431792 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature