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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences

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1865-7117
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Volume 69, Issue 9-10

Issues

Darstellung und strukturelle und spektroskopische Charakterisierung der Triiodide [M(12-Krone-4)2]I3 mit M = Na und Rb / Preparation and Structural and Spectroscopic Characterization of Triiodides [M(12-Crown-4)2]I3 with M= Na and Rb

Zehra Edis
  • Corresponding author
  • Institut für Anorganische Chemie, Universität zu Köln, Greinstrasse 6, D-50939, Köln, Germany
  • Present address: Faculty of Pharmacy and Health Sciences, Ajman University of Science and Technology, P. O. Box 346, Ajman, VAE
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Samir Haj Bloukh
  • Faculty of Pharmacy and Health Sciences, Ajman University of Science and Technology, P. O. Box 346, Ajman, VAE
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2015-03-19 | DOI: https://doi.org/10.5560/znb.2014-4044

Abstract

Reddish-brown crystals of [Na(12-crown-4)2]I3 (1) and [Rb(12-crown-4)2]I3 (2) were formed through the reaction of NaI or RbI, I2 and 12-crown-4 in ethanol. Both structures are triclinic, space group P1 with Z = 2. The lattice parameters are a = 8:505(2), b = 14:280(3), c = 10:695(2) Å and α = 89:86(2)°, β = 80:00(2)° and γ = 85:90(2)°; and a = 10:694(2), b = 11:598(2), c = 12:718(2) Å and α = 71:00(2)°, β = 86:97(2)° and γ = 67:710(10)° for 1 and 2, respectively. Both crystal structures contain one independent complex cation without crystallographic symmetry. The anionic parts of both structures consist of two crystallographically independent, isolated, triiodide anions I3- with crystallographic inversion symmetry. The cations are distorted sandwich-like complexes with two 12-crown-4 molecules surrounding the alkali metal atom in the center.

Keywords: Triiodide; Crown Ether; Alkali Metal; Crystal Structure; Spectroscopy; Phase Transitions

About the article

Received: 2014-02-06

Published Online: 2015-03-19

Published in Print: 2014-10-01


Citation Information: Zeitschrift für Naturforschung B, Volume 69, Issue 9-10, Pages 995–1002, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.5560/znb.2014-4044.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung.

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