Synthesis and Crystal Structure of the Europium(II) Hydride Oxide Iodide Eu₅H₂O₂I₄ Showing Blue-Green Luminescence.

ABSTRACT: As the first europium(II) hydride oxide iodide, dark red single crystals of Eu₅H₂O₂I₄ could be synthesized from oxygen-contaminated mixtures of EuH₂ and EuI₂. Its orthorhombic crystal structure (a = 1636.97(9) pm, b = 1369.54(8) pm, c = 604.36(4) pm, Z = 4) was determined via single-crystal X-ray diffraction in the space group Cmcm. Anion-centred tetrahedra [HEu₄]⁷⁺ and [OEu₄]⁶⁺ serve as central building blocks interconnected via common edges to infinite ribbons parallel to the c axis. These ribbons consist of four trans-edge connected (Eu²⁺)₄ tetrahedra as repetition unit, two H^--centred ones in the inner p

SUBMITTER: Rudolph D 

PROVIDER: S-EPMC10573458 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature