Darstellung und strukturelle und spektroskopische charakterisierung der triiodide [M(12-Krone-4)2]I3 mit M = Na und Rb

Zehra Edis; Samir Haj Bloukh

doi:10.5560/ZNB.2014-4044

Darstellung und strukturelle und spektroskopische charakterisierung der triiodide [M(12-Krone-4)₂]I₃ mit M = Na und Rb

Translated title of the contribution: Preparation and structural and spectroscopic characterization of triiodides [M(12-Crown-4)₂]I₃with M = Na and Rb

College of Pharmacy and Health Sciences

University of Cologne

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

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.

Translated title of the contribution	Preparation and structural and spectroscopic characterization of triiodides [M(12-Crown-4)₂]I₃with M = Na and Rb
Original language	German
Pages (from-to)	995-1002
Number of pages	8
Journal	Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
Volume	69
Issue number	9-10
DOIs	https://doi.org/10.5560/ZNB.2014-4044
State	Published - 1 Oct 2014

Keywords

Alkali metal
Crown ether
Crystal structure
Phase transitions
Spectroscopy
Triiodide

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title = "Darstellung und strukturelle und spektroskopische charakterisierung der triiodide [M(12-Krone-4)2]I3 mit M = Na und Rb",

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) {\AA} 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) {\AA} 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 = "Alkali metal, Crown ether, Crystal structure, Phase transitions, Spectroscopy, Triiodide",

author = "Zehra Edis and Bloukh, \{Samir Haj\}",

note = "Publisher Copyright: {\textcopyright} 2014 Verlag der Zeitschrift f{\"u}r Naturforschung, T{\"u}bingen.",

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AU - Edis, Zehra

AU - Bloukh, Samir Haj

PY - 2014/10/1

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N2 - 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.

AB - 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.

KW - Alkali metal

KW - Crown ether

KW - Crystal structure

KW - Phase transitions

KW - Spectroscopy

KW - Triiodide

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M3 - Article

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ER -

Darstellung und strukturelle und spektroskopische charakterisierung der triiodide [M(12-Krone-4)₂]I₃ mit M = Na und Rb

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