Sr2 (Be2 B2 O7)

B₂Be₂O₇Sr₂

Wu, K.-C.Zeng, W.-I.Chen, C.-T.Wu, B.-C.Yu, L.-H.Wang, Y.-B.

Nature (London) (1995) 373, 322-324

a=4.683Å   b=4.683Å   c=15.311Å

α=90°   β=90°   γ=120°