Ca3 (Mn2 O7)

Ca₃Mn₂O₇

Bendersky, L.A.Chen RongjiFawcett, I.D.Greenblatt, M.

Journal of Solid State Chemistry (2001) 157, 309-323

a=19.37Å   b=5.27Å   c=5.27Å

α=90°   β=90°   γ=90°