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Crystal structure of chain silicate Cs₃LuSi₃O₉.

ABSTRACT: A caesium lutetium(III) silicate, Cs₃LuSi₃O₉, was synthesized by heating a pelletized mixture of Cs₂CO₃, Lu₂O₃ and SiO₂ at 1273 K. Single crystals of the title compound were grown in a melted area of the pellet. Cs₃LuSi₃O₉ is a single-chain silicate (ortho-rhom-bic space group Pna2₁) with a chain periodicity of six and is isostructural with Cs₃ RE ^IIIGe₃O₉ (RE = Pr, Nd and Sm-Yb). The two symmetry-dependent [Si₆O₁₈]^12- chains in the unit cell lie parallel to the [011] direction. The Lu³⁺ ions are octa-hedrally coordinated by O atoms of the silicate chains, generating a three-dimensional framework. Cs⁺ ions are located in the voids in the framework.

SUBMITTER: Kimura H

PROVIDER: S-EPMC8647736 | biostudies-literature |

REPOSITORIES: biostudies-literature

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