X-ray diffraction studies of transition metal molybdates

摘要

Methods of synthesis of copper dimolybdate trihydrate and cobalt trimolybdatepentahydrate are described below. Crystal structures of these compounds have been solvedby X-ray powder diffraction methods. The space group of СuМо_2O_7·3Н_2O(I) isP-1withlattice parameters a = 8.678(7) A, b = 9.289(4) A, c = 6.064(5) A, a = 90.72(9)0, β=95.99(5)°, γ=97.42(8)°, and for СoMo_3O_(10)·8Н_2O(II) the space group is P2_1/c with latticeparameters a = 12.072(3) A, b = 19.833(2) A, c = 7.624(9) A, β=107.58(5)°. Results onthe crystal structure determination and the Rietveld refinement of both compounds are pre-sented