New oxonium bromochalcogenates(IV) - Synthesis, structure, and properties of [H3O][TeBr5]center dot 3 C4H8O2 and [H3O](2)[SeBr6]

被引：23

作者：

Reich, O ^{[1
]}

Hasche, S ^{[1
]}

Buscher, K ^{[1
]}

Beckmann, I ^{[1
]}

Krebs, B ^{[1
]}

机构：

[1] UNIV MUNSTER,INST ANORGAN CHEM,D-48149 MUNSTER,GERMANY

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1996年 / 622卷 / 06期

关键词：

halogenochalcogenates(IV); oxonium ions; supramolecular systems; pentabromotellurate(IV); hexabromoselenate(IV); crystal structures;

D O I：

10.1002/zaac.19966220615

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Dark red crystals of the composition [H3O][TeBr5] . 3 C4H8O2 (1) were isolated from a saturated solution of TeBr4 in 1,4-dioxane containing a small amount of water. In this compound (space group P2(1)/m, a = 8.922(4) Angstrom, b = 13.204(7) Angstrom, c = 9.853(5) Angstrom, beta = 91.82(4)degrees at 150 K) a square pyramidal [TeBr5](-) anion has been isolated for the first time. The coordination sphere of the anion is completed to a distorted octahedron by weak interaction with a dioxane molecule of the cationic system. The [(HO)-O-3](+) cations are connected to chains by dioxane molecules. At room temperature the compound is stable only in its mother liquor. Crystalline[H3O](2)[SeBr6] (2) (space group Fm3m, a = 10.421(1) Angstrom at 170 K) is a bromoselenous acid of high symmetry. The [H3O](+) ion is only weakly coordinated by Br atoms of the anion. The anions are isolated octahedral [SeBr6](2-) units. The structure is isotypic to the K-2[PtCl6] structure. Despite being a halogeno-chalcogen(IV) acid, 2 exhibits a remarkable thermal stability. Both oxonium compounds were characterized by single-crystal X-ray structure analyses. Vibrational spectra of 2 are reported.

引用

页码：1011 / 1018

页数：8

共 20 条

[11]

KREBS B, 1992, Z NATURFORSCH B, V47, P93

[12]

KREBS B, 1991, Z NATURFORSCH B, V46, P919

[13]

KREBS B, 1985, NOVA ACTA LEOPOLDINA, V59, P131

[14]

KREBS B, UNPUB

[15] DEVELOPMENTS IN CHALCOGEN-HALIDE CHEMISTRY [J].

Krebs, Bernt ;

Ahlers, Frank-Peter .

ADVANCES IN INORGANIC CHEMISTRY <D>, 1990, 35 :235-317

[16] HYDROGEN-BOND STUDIES .30. CRYSTAL STRUCTURE OF HYDROGEN BROMIDE TETRAHYDRATE (H7O3)+(H9O4)+2BR-.H2O [J].

LUNDGREN, JO ;

OLOVSSON, I .

JOURNAL OF CHEMICAL PHYSICS, 1968, 49 (03) :1068-&

[17]

LUNDGREN JO, 1976, HYDROGEN BOND RECENT

[18] THE STRUCTURE OF THE TETRACHLOROHYDROXOTELLURATE(IV) ANION IN KTECL4(OH).0.5H2O AND KTECL4(OH) [J].

MILNE, JB ;

GABE, EJ ;

BENSIMON, C .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1991, 69 (04) :648-652

[19]

PAULAT V, 1976, THESIS U BIELEFELD

[20]

Pearson R. G., 1976, Symmetry Rules for Chemical Reactions

← 1 2 →