Crystal Structure of a New Bismuth Perrhenate Bi(ReO4)3H2O

ABSTRACT Monoaquatris(tetraoxorhenate (VII)) bismuth(III), Bi(ReO 4 ) 3 (H 2 O) was prepared by reaction of (BiO) 2 CO 3 /Bi 2 (CO 3 ) 3 with concentrated HReO 4 at room temperature. The pale yellow compound crystallize triclinic in the space group P1;, (No. 2); with two formula units per unit cell (a = 746.0(1) pm, b = 777.1(2) pm, c = 990.5(2) pm, α = 100.99(3)°, β = 99.88(3)°, γ = 100.17(3)° ). The main feature of the crystal structure is a distorted bicapped trigonal prism of Bi[(ReO 4 ) 3/2 (ReO 4 ) 2/2 (ReO 4 ) 2/2 (H 2 O)], which are connected each other through [ReO 4 ]-tetrahedra to form a three-dimensional network. In the titled compound, the cation Bi 3+ is eightfold coordinated which agree with the tendency observed in other compounds of the family. Keywords: crystal structure, perrhenate anions, X-ray diffraction, coordination number INTRODUCTION In previous publications we reported the synthesis and crystal structure of tetraoxorhenates (VII) of some rare earth metals like Gd, Sm, Eu, Yb, La