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crystal data
The chemical preparation and crystal data for CuCr2O7.2H2O is given. Copper dichromate dihydrate is monoclinic (P21/n) with a = 13.19 (4), b = 7.579 (2), c = 7.411 (2) Å, β= 105.81 (5)°, Dx = 2.94 Mg/m3.