Published February 13, 2012 | Version v1
Journal article Metadata-only

Reactions of beryllium halides in liquid ammonia. The tetraammineberyllium cation [Be(NH3)4]2+, its hydrolysis products, and the action of Be2+ as a fluoride-ion acceptor

Creators

  • 1. Department of Chemistry, AG Fluorchemie, Technische Universitaet Muenchen, Garching (Germany)
  • 2. Department of Chemistry, University of Eastern Finland, Joensuu (Finland)

Description

The first structural characterization of the text-book tetraammineberyllium(II) cation [Be(NH3)4]2+, obtained in the compounds [Be(NH3)4]2Cl4.17NH3 and [Be(NH3)4]Cl2, is reported. Through NMR spectroscopic and quantum chemical studies, its hydrolysis products in liquid ammonia were identified. These are the dinuclear [Be2(μ-OH)(NH3)6]3+ and the cyclic [Be2(μ-OH)2(NH3)4]2+ and [Be3(μ-OH)3(NH3)6]3+ cations. The latter species was isolated as the compound [Be3(μ-OH)3(NH3)6]Cl3.7NH3. NMR analysis of solutions of BeF2 in liquid ammonia showed that the [BeF2(NH3)2] molecule was the only dissolved species. It acts as a strong fluoride-ion acceptor and forms the [BeF3(NH3)]- anion in the compound [N2H7][BeF3(NH3)]. The compounds presented herein were characterized by single-crystal X-ray structure analysis, 9Be, 17O, and 19F NMR, IR, and Raman spectroscopy, deuteration studies, and quantum chemical calculations. The extension of beryllium chemistry to the ammine system shows similarities but also decisive differences to the aquo system. (Copyright copyright 2012 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

Availability note (English)

Available from: http://dx.doi.org/10.1002/chem.201103012

Additional details

Identifiers

DOI
10.1002/chem.201103012;

Publishing Information

Journal Title
Chemistry (Weinheim)
Journal Volume
18
Journal Issue
7
Journal Page Range
p. 2131-2142
ISSN
0947-6539
CODEN
CEUJED

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
48061884
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AMMONIA; BERYLLIUM HALIDES; CRYSTAL STRUCTURE; HYDROLYSIS; INFRARED SPECTRA; MONOCRYSTALS; NUCLEAR MAGNETIC RESONANCE; RAMAN SPECTROSCOPY; X-RAY DIFFRACTION
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BERYLLIUM COMPOUNDS; CHEMICAL REACTIONS; COHERENT SCATTERING; CRYSTALS; DECOMPOSITION; DIFFRACTION; HALIDES; HALOGEN COMPOUNDS; HYDRIDES; HYDROGEN COMPOUNDS; LASER SPECTROSCOPY; LYSIS; MAGNETIC RESONANCE; NITROGEN COMPOUNDS; NITROGEN HYDRIDES; RESONANCE; SCATTERING; SOLVOLYSIS; SPECTRA; SPECTROSCOPY

Optional Information

Notes
With 9 figs., 1 tab., 100 refs.