AM_Na7Fe3(As2O7)4
Formula: As8 Fe3 Na6.96 O28
Name: Na7Fe3(As2O7)4
Unit cell: 9.94 8.5483 28.762 90.0 93.683 90.0 , V=2438.86
Space group: C12/C1 (15)

Masquelier C , d Yvoire F , Rodier N , Acta Crystallographica, Section C , 46 (1990) p.1584-1587, Structure of the sodium ion conductor Na7Fe3(As2O7)4