ISSN:
0044-2313
Keywords:
Polyiodides
;
Pentaiodide
;
Heptaiodide
;
N-Propylurotropinium Ion
;
Crystal Structures
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Studies on Polyhalides. 26. On N-Propylurotropinium Polyiodides UrPrIx with x = 5 and 7: Crystal Structures of a Pentaiodide and a HeptaiodideThe salts UrPrIx with x = 5 and 7 are formed by the reaction of N-propylurotropinium iodide UrPrI with excess iodine I2 at room temperature from aqueous solution. N-propylurotropinium pentaiodide C9H19N4I5 crystallizes monoclinically in P21/n with a = 1007.6(3) pm, b = 1362.5(3) pm, c = 2899.0(9) pm, β = 91.49(3)º and Z = 8. The crystal structure is built up from parallel chains of cations UrPr+ and pairs of V-shaped pentaiodide anions I5- along [0 1 0]. N-propylurotropinium heptaiodide C9H19N4I7 crystallizes triclinically in P1 with a = 970.4(1) pm, b = 971.1(1) pm, c = 1357.8(2) pm, α = 106.83(1)º, β = 92.28(1)º, γ = 105.17(1)º and Z = 2. The crystal structure is stacked by alternating cationic and anionic double layers along [0 0 1]. The heptaiodide layer shows a two-dimensional network.
Notes:
Die Verbindungen UrPrIx mit x = 5 und 7 lassen sich durch Umsetzung von N-Propylurotropiniumiodid UrPrI mit überschüssigem Iod I2 bei Raumtemperatur aus wäßriger Lösung gewinnen. N-Propylurotropiniumpentaiodid C9H19N4I5 kristallisiert in der monoklinen Raumgruppe P21/n mit a = 1007,6(3) pm, b = 1362,5(3) pm, c = 2899,0(9) pm, β = 91,49(3)º und Z = 8. In der Kristallstruktur ordnen sich Kationen UrPr+ und Dimere aus stark aufgeweiteten V-förmigen Anionen I5- entlang [0 1 0] zu parallelen Strängen an. N-Propylurotropiniumheptaiodid C9H19N4I7 kristallisiert in der triklinen Raumgruppe P1 mit a = 970,4(1) pm, b = 971,1(1) pm, c = 1357,8(2) pm, α = 106,83(1)º, β = 92,28(1)º, γ = 105,17(1)º und Z = 2. In der Kristallstruktur wechseln sich Doppelschichten aus Kationen UrPr+ und aus vernetzten Anionen I7- längs [0 0 1] ab.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19966220809
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