Na Be2 (B O3) F2

BBe₂F₂NaO₃

Chen, C.-T.Mei, L.-F.Wang, Y.-B.

Materials Research Bulletin (1994) 29, 81-87

a=12.643Å   b=8.729Å   c=7.591Å

α=90°   β=113.6°   γ=90°