fluoroberyllate is an anion of

fluorine Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. As the most electronegative reactive element, it is extremely reacti ...

and beryllium with other elements. The main kinds are the

tetrafluoroberyllate Tetrafluoroberyllate or orthofluoroberyllate is an anion containing beryllium and fluorine. The fluoroanion has a tetrahedral shape, with the four fluorine atoms surrounding a central beryllium atom. It has the same size and outer electron struct ...

s (BeF₄)²⁻, the trifluoroberyllates (BeF₃)⁻, polymeric fluoroberyllates (which can crystalize similarly silica containing minerals) and fluoroberyllate glass.{{cite book, last1=Emeléus, first1=Harry Julius, last2=Sharpe, first2=A. G., title=ADVANCES IN INORGANIC CHEMISTRY AND RADIOCHEMISTRY, url=https://books.google.com/books?id=VupzlLU9NB0C&pg=PA271, accessdate=13 July 2013, date=1972-12-06, publisher=Academic Press, isbn=9780080578637, pages=271–275

References

Fluoro complexes Beryllium compounds Fluorometallates