Citation: Bennazha, J.; Erragh, F.; Holt, E. M.; Boukhari, A. (2000). Identification of a new family of diphosphate compounds, A(I)2 B(II)3 (P~2~O~7~)~2~: structures of Ag~2~Co~3~(P~2~O~7~)~2~, Ag~2~Mn~3~(P~2~O~7~)~2~, and Na~2~Cd~3~(P~2~O7)~2~. Journal of Chemical Crystallography, 30, pp. 705-716.