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crystal data
Ammonium phosphoberyllate, Be2P3O10NH4, is monoclinic with a unit cell a = 12.200 (8), b = 8.645 (3), c = 8.937 (3) Å, β = 117.40 (5)° and Z = 4. Possible space groups are Cc or C2/c. The chemical preparation and crystal data are given for this new compound.