Structure du tétrasulfate d'hydroxodioxotétraantimoine(III) et de dioxonium monohydraté Sb^III ₄O₂(OH)(SO₄)₄(H₅O₂).H₂O (ou Sb₂O₃.2SO₃.2H₂O)

Abstract

Sb203.2SO3.2H20 is orthorhombic, space groupPna2~ with a = 18.835 (8), b = 9.629(6), c = 9.774 (5)A, V= 1773A 3,Z= 4, d m= 3.68, d x= 3.65 Mg m-3; fl(Mo Ka) = 6.7 mm -1. The structure has been solved from single-crystal data collected on a four-circle diffractometer by Patterson and Fourier syntheses. With anisotropic temperature factors, the final R w value is 0

The crystal structure of balićžunićite, Bi2O(SO4)2, a new natural bismuth oxide sulfate

“…The same amount of 'overbonding' is obtained for the same type of oxo oxygen coordination in the high-temperature structure (Aurivillius, 1988), and the same effect can be observed for the OSb 3 planar coordination in Sb 4 O 2 (OH)(SO 4 ) 4 (H 5 O 2 )(H 2 O) (Douglade and Mercier, 1980). The crystal-structure refinement does not suggest a deviation from planarity in a form of displacement parameters perpendicular to the coordination plane or even a split site of the oxo oxygens which could account for longer bonds.…”

Structure of an oxonium antimony(III) sulphate, (H3O)2Sb2(SO4)4

“…In the structure reported here, the mean volume is 17 A 3 and two different SbO,rE polyhedra are involved ( (mean value~2.24 A). This coordination has been demonstrated and discussed in a previous work (Douglade & Mercier, 1980) where two similar SbOsE octahedra shared one O(ax)-O(eq) edge. In this structure, this polyhedron is discrete: the Sb atom is positioned above the four equatorial atoms near the axial lone pair E. The octahedron O5E is distorted with axial-equatorial O...O lengths (2.70 A) shorter than the equatorial distances (3.11/~), as was previously found (Douglade & Mercier, 1980).…”

“…This coordination has been demonstrated and discussed in a previous work (Douglade & Mercier, 1980) where two similar SbOsE octahedra shared one O(ax)-O(eq) edge. In this structure, this polyhedron is discrete: the Sb atom is positioned above the four equatorial atoms near the axial lone pair E. The octahedron O5E is distorted with axial-equatorial O...O lengths (2.70 A) shorter than the equatorial distances (3.11/~), as was previously found (Douglade & Mercier, 1980). This structure determination allowed us first to determine the true chemical composition of these unstable crystals and, secondly, to prove the existence of H30+ species which could not be assigned by chemical and spectroscopic analyses.…”

“…5b20(504) 2 (Mercier, Douglade & Theobald, 1975), Sb2(804) 3 (Mercier, Douglade & Bernard, 1976), 5b607(SO4) 2 (Bovin, 1976), and Sb2(OH)2(SOa)2.2H20 (Douglade, Mercier & Vivier, 1978). Recently an unusual SbOsE coordination has been described by us in Sb402(OH)(SO4)4(HsO2).H20 (Douglade & Mercier, 1980). In addition, such compounds may be good ionic proton conductors (Watelet, Picard, Baud, Besse & Chevalier, 1981), which could be of use in solid-state batteries.…”

Synthesis, Crystal Structures, and Thermal Analyses of Two New Antimony Tellurite Sulfates: [Sb2(TeO4)](SO4) and [Sb2(TeO3)2](SO4)

“…As trivalent antimony is susceptible to oxidation, a considerably smaller number of Sb(III)-oxy compounds were found as compared to Sb(V)-oxy compounds. For compounds containing Sb(III), the most frequently observed coordination polyhedra are the [ [14] Sb 2 (S 2 O 7 ) 3 , [15] Sb 2 (OH) 2 (SO 4 ) 2 • 2H 2 O, [16] one dimensional chains in Sb 4 O 2 (OH)(SO 4 ) 4 (H 5 O 2 ) • H 2 O, [17] two dimensional layers in CuSb 6 O 8 (SO 4 ) 2 , [18] ASb(SO 4 ) 2 (A = K, Cs), [19] three dimensional framework in Sb 6 O 7 (SO 4 ) 2 , [20,21] Sb 4 O 4 (OH) 2 SO 4 , [22,23] , Sb 2 (SO 4 ) 2 (S 2 O 7 ), [24] RbSbSO 4 Cl 2 , [25] K 4 Sb(SO 4 ) 3 Cl. [26] Various types of linkage among the coordination polyhedra are adopted in these compounds.…”