Synthesis and Crystal Structure of the Strontium Beryllate Sr3Be2O5

Giftthaler, Tobias; Strobel, Philipp und Schnick, Wolfgang (2020): Synthesis and Crystal Structure of the Strontium Beryllate Sr3Be2O5. In: Zeitschrift für Anorganische und Allgemeine Chemie, Bd. 646, Nr. 3: S. 103-105

Abstract

Beryllates show an interesting and diverse structural chemistry, resembling that of well‐investigated silicates. The coexistence of tetrahedral and trigonal coordination of Be by O atoms in oxoberyllates allows for an even broader variety of structural motives and implies a plurality of possible atomic ratios Be:O in ternary or higher compounds. We have now synthesized the novel strontium oxoberyllate Sr3Be2O5 via a high‐temperature high‐pressure reaction and have structurally characterized the ternary oxide by single‐crystal and powder X‐ray diffraction analysis. Sr3Be2O5, a low condensed oxoberyllate, contains unprecedented [Be2O5]6– double triangles and Sr atoms in both double‐capped trigonal‐prismatic and octahedral coordination. These motifs show striking resemblance to α‐SrBeO2 and SrO, combining their structural properties. Lattice energy (MAPLE) calculations corroborate found parallels to the known phases SrO and α‐SrBeO2.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Chemie und Pharmazie > Department Chemie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 0044-2313
• Bemerkung: Special Issue: Dedicated to Professor Hans‐Jörg Deiseroth on the Occasion of his 75th Birthday
• Sprache: Englisch