Abstract
BERYLLOSILICATES are normally framework structures, with Be in tetrahedral coordination, similar to Si (ref. 1), and the structural role of Be can be compared with that of Al in the aluminosilicates. We report here on the preparation and X-ray crystal structure determination of Rb2Be2Si2O7, which contains planar BeO3 groups. Such coordination is unusual for beryllium, and, in complex oxides, has apparently been found previously only in Y2BeO4 (ref. 2), Ca12Be17O29 (ref. 3), and K2BeO2 (ref. 4).
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HOWIE, R., WEST, A. A novel beryllosilicate phase containing 3-coordinate beryllium (Rb2Be2Si2O7). Nature 259, 473 (1976). https://doi.org/10.1038/259473a0
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DOI: https://doi.org/10.1038/259473a0
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