Citation: Floros, N.; Raveau, B.; Michel, C.; Hervieu, M. (2001). Calcium insertion in the Na4 Mn9 O18 tunnel structure: Na1.1 Ca1.8 Mn9 O18. Journal of Solid State Chemistry, 162, pp. 34-41.
Formula: Ca2 Mn9 Na1.25 O18
Chemical name: Na1.25 Ca2 Mn9 O18
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Mn36 O72 (Mn O2)
Multiplicity: 1
Coordination sequences: