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Synthesis and Crystal Structure of the Strontium Beryllate Sr 3 Be 2 O 5
Author(s) -
Giftthaler Tobias,
Strobel Philipp,
Schnick Wolfgang
Publication year - 2020
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201900281
Subject(s) - strontium , crystallography , octahedron , ternary operation , crystal structure , lattice energy , tetrahedron , trigonal crystal system , trigonal prismatic molecular geometry , lattice (music) , chemistry , coordination number , maple , materials science , physics , ion , organic chemistry , computer science , acoustics , programming language , botany , biology
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 Sr 3 Be 2 O 5 via a high‐temperature high‐pressure reaction and have structurally characterized the ternary oxide by single‐crystal and powder X‐ray diffraction analysis. Sr 3 Be 2 O 5 , a low condensed oxoberyllate, contains unprecedented [Be 2 O 5 ] 6– double triangles and Sr atoms in both double‐capped trigonal‐prismatic and octahedral coordination. These motifs show striking resemblance to α‐SrBeO 2 and SrO, combining their structural properties. Lattice energy (MAPLE) calculations corroborate found parallels to the known phases SrO and α‐SrBeO 2 .