Abstract
Solid solutions, Cd x Hg 1− x ,B 4O 7, were obtained from Cd(OH) 2,HgO and B(OH) 3 in appropriate stoichiometric amounts, at low temperatures ranging between 523 and 623 K and 10 −4–10 −5 Hg mm. These materials were characterized by X-ray powder diffraction, giving orthorhombic symmetry (space group Pbca, No. 61) and the lattice parameters (in Å) are: a = 8.704, b = 14.176, c = 8.229 (for x = 1), a = 8.729, b = 14.168, c = 8.242 (for x = 0.75), a = 8.758, b = 14.162, c = 8.303 (for x = 0.5), a = 8.769, b = 14.147, c = 8.348 (for x = 0.25) and a = 8.792, b = 14.107, c = 8.382 (for x = 0). IR spectra and TG are discussed on the basis of the stereochemistry of the boron atoms in these structures. The results seem to indicate that this method of synthesis can be applied to the isolation of related metal borates at temperatures that are several hundred degrees below those cited in the literature.
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