ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Structure and Properties of the Blue Chromium(II) Chloride Tetrahydrate CrCl2.4H2OThe blue chromium(II) chloride tetrahydrate CrCl2. 4 H2O crystallizes monoclinic in the space group P21/c with a = 5.904, b = 7.339, c = 8.347 Å and β = 110.10°. The unit cell contains two isolated complexes in which the chromium atoms are coordinated by four short bonded water molecules with square planar configuration (Cr—O = 2.078 Å) and by two chlorine atoms in trans-configuration with long bonds (Cr—Cl = 2.758 Å). This structure may be described by the formula {[Cr(H2O)4]Cl2}. The absorption spectra are discussed on the basis of the structure determination.
Notes:
Das blaue Chrom(II)-chlorid-tetrahydrat CrCl2. 4 H2O kristallisiert monoklin in der Raumgruppe P21/c mit a = 5,904, b = 7,339, c = 8,347 Å und β = 110,10°. Die Elementarzelle enthält zwei isolierte Komplexe, in denen die Chromatome an vier planarquadratisch angeordnete, nahe benachbarte H2O-Molekeln (Cr—O = 2,078 Å) und an zwei transständige, weiter entfernte Cl-Atome (Cr—Cl = 2,758 Å) gebunden sind. Dieser Aufbau läßt sich mit der Formel {[Cr(H2O)4]Cl2} zum Ausdruck bringen. Die Lichtabsorption wird auf der Basis der Strukturbestimmung neu diskutiert.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19734020206
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