Ba3 Sr Ta2 O9

Ba₃O₉SrTa₂

Galasso, F.Katz, L.Barrante, J.R.

Journal of the American Chemical Society (1961) 83, 2830-2832

a=5.95Å   b=5.95Å   c=7.47Å

α=90°   β=90°   γ=120°