ISSN:
0044-2313
Keywords:
Fluoro antimonates(III)
;
protonated azacrownethers
;
host-guest complexes
;
crystal structures
;
Mößbauer spectra
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Anionic Antimony(III) Fluoro Complexes with protonated Azacrownethers as Counterions. Crystal Structures and Mößbauer Spectra of [H2cyclam]2[Sb4F16] · 2H2O, [H4cyclam][Sb2F10] · 2 HF, and [H4(tetramethyl)cyclam]2[Sb4F15][HF2][F]4 (cyclam = 1,4,7,11-Tetraazacyclotetradecane)The title compounds are formed by reaction of SbF3 with the respective azacrownether. [H2cyclam]2[Sb4F16] · 2 H2O contains tetrameric anions which weakly associate to chains. The [H2cyclam]2+ ions possess an unusual conformation due to intramolecular hydrogen bonds. [H4cyclam][Sb2F10] · 2HF contains the dimeric hitherto unknown [Sb2F10]4- ion; two HF molecules are attached to it by hydrogen bonds. The structure of [H4(tetramethyl)cyclam]2[Sb4F15][HF2][F]4 is made up of the two dimensional polymeric [HSb4F17]4- anion. The tetra-protonated tetramethylcyclam ions form host-guest complexes with fluoride ions.
Notes:
Die Titelverbindungen entstehen durch Reaktion von SbF3 mit dem betreffenden Azakronenether. [H2cyclam]2[Sb4F16] · 2H2O enthält tetramere, schwach assoziierte [Sb4F16]4--Anionen. Die Kationen [H2cyclam]2+ liegen infolge intramolekularer H-Brückenbindungen in einer ungewöhnlichen Konformation vor. [H4cyclam][Sb2F10] · 2 HF enthält das dimere [Sb2F10]4--Ion, an das zwei HF-Moleküle gebunden sind. In [H4(tetramethyl)cyclam]2[Sb4F15][HF2][F]4 liegt ein zweidimensional polymeres Anion der Formel [HSb4F17]4- vor. Fluoridionen und protonierte Azakronenether bilden Wirts-Gast-Komplexe.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19966220116
