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Start Over Author "Sven Hasche" Topic chemistry
2 results on '"Sven Hasche"'

1. Polymeric structures containing self-assembled Lidioxane networks; syntheses and crystal structures of [{Li(dioxane)2.5TaCl4S}n]·n/2 dioxane and [{Li2(dioxane)3Cl}n][TaCl6]n

Author

Jens Otto, Sven Hasche, Christian Mock, A. Alan Pinkerton, Kristin Kirschbaum, Bernt Krebs, and Florian Schweppe

Subjects
Chemistry, Stereochemistry, Crystal structure, Self assembled, Inorganic Chemistry, Metal, Crystallography, visual_art, Materials Chemistry, visual_art.visual_art_medium, Molecule, Physical and Theoretical Chemistry, Coordination site, Monoclinic crystal system
Abstract

The preparation and X-ray structure analyses of the compounds [{Li(dioxane)2.5TaCl4S}n]·n/2 dioxane (1) and [{Li2(dioxane)3Cl}n][TaCl6]n (2) are described. The title compounds were isolated from a refluxed solution of TaCl5 and Li2S in dioxane/CH3CN. The compounds both crystallize in the monoclinic space group C2/c and contain a network of dioxane bridged Li+ cations. In 1, the polymeric network is further extended by TaCl4S units. The sixth coordination site of the central metal in these TaCl4S units is occupied by an O-atom of one of the Li coordinating dioxane molecules. In contrast, the [TaCl6]− complex anion in 2 is isolated within a three-dimensional LiCldioxane network.

Published
2000

2. New Oxonium Halochalcogenates(IV) and -(II)

Author

Sven Hasche, Oliver Reich, I. Beckmann, Bernt Krebs, and Stefan Bonmann

Subjects
chemistry.chemical_classification, Stereochemistry, Organic Chemistry, Supramolecular chemistry, Crystal structure, Biochemistry, Square pyramidal molecular geometry, Inorganic Chemistry, Crystallography, Chalcogen, Octahedron, chemistry, Halogen, Oxonium ion, Crown ether
Abstract

The reported novel compounds [H3O·(dibenzo-18-crown-6)][Te2Br9], [H5O2][Te2Cl9]·2C4H8O2 and [H5O2·(bis-dibromo-dibenzo-24-crown-8)]2[Se3Br8] highlight the large structural and chemical variety of halogen chalcogen chemistry. Both [Te2X9]− anions (X = Cl, Br) consist of one square pyramidal TeX5 fragment connected to a TeX6 octahedron by a common edge. The linear [Se3Br8]2− anion is built by three square planar SeBr4-fragments. The three counterions offer a convenient possibility for controlled synthesis of supramolecular oxonium systems.

Published
1998

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