Resumo

MUJICA, Carlos et al. SYNTHESIS, CRYSTAL STRUCTURE, MAGNETIC PROPERTIES AND THERMAL STABILITY OF GD(REO₄)₃(H₂O) ₃ . Bol. Soc. Chil. Quím. [online]. 2000, vol.45, n.2, pp.329-332. ISSN 0366-1644.  http://dx.doi.org/10.4067/S0366-16442000000200022.

Trisaquatris(tetraoxorhenate(VII)) gadolinium(III), Gd(ReO₄)₃(H₂O) ₃, was prepared by the reaction of Gd₂O₃ with HReO₄ at room temperature. The colorless compound crystallizes in the orthorhombic space group Pna2₁ (No. 33) with four formula units per unit cell (a = 1470.9 pm , b = 843.6 pm, c = 1146.1 pm ). The main feature of the crystal structure is the formation of a non-centric 3D network. This arrangement shows distorted tricapped trigonal prisms of Gd(H₂O)₃(ReO₄) _6/2 interconected via the ReO₄^- ligands. The compound is paramagnetic and follows the Curie-Weiss law with a magnetic moment of 7.6 BM. It decomposes above 1170 K with evolution of volatile rhenium oxides and formation of Gd₃ReO₈

Palavras-chave : Rhenium; gadolinium; oxide; crystal structure; magnetic properties.