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  • 1
    ISSN: 0044-2313
    Keywords: Synthesis ; Crystal structure ; Crown ether ; Lanthanides ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: [La2I2(OH)2(dibenzo-18-crown-6)2]I(I3), a Cationic Dimeric in-cavity Complex with Iodide and Triiodide as AnionsSingle crystals of [La2I2(OH)2(dibenzo-18-crown-6)2]I(I3) are obtained from the reaction of LaI3 and dibenzo-18-crown-6 in acetonitrile. The crystal structure monoclinic, C2/m, Z = 4, T = 293 [100] K, a = 2179(3) [2162.3(3)], b = 1070.3(3) [1069.6(1)], c = 1118.2(3) [1110.6(1)] pm, β = 93.1(1) [92.83(1)]°, R1 = 0.0601 [0.0411], wR2 = 0.1449 [0.1014] contains hydroxide-bridged cationic dimers and iodide as well as triiodide as anions.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0044-2313
    Keywords: Lanthanum ; Bromide ; Crown Ether Complexes ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of the Monomeric Out-of-cavity Complex [LaBr3(12-crown-4)(acetone)]Colourless crystals of [LaBr3(12-crown-4)(acetone)] are obtained upon reaction of LaBr3 with 12-crown-4-ether in acetone. The crystal structure (monoclinic, P21/n, Z = 4; a = 968.1(1), b = 1317.9(1), c = 1459.8(2) pm, β = 102.09(1)°, R1 = 0.0445, wR2 = 0.0985) contains neutral out-of-cavity complexes of the composition [LaBr3(12-crown-4)(acetone)]: La3+ is coordinated by the four O-ligator atoms of the 12-crown-4-ether, the three bromide ions and the oxygen atom of one acetone molecule in the fashion of a distorted square antiprism.
    Notes: Bei der Umsetzung von LaBr3 mit 12-Krone-4-Ether in Aceton erhält man farblose Kristalle von [LaBr3(12-Krone-4)(Aceton)]. Die Kristallstruktur (monoklin, P21/n, Z = 4; a = 968,1(1); b = 1317,9(1); c = 1459,8(2) pm; β = 102,09(1)°; R1 = 0,0445; wR2 = 0,0985) ist aus neutralen “out-of-cavity”-Komplexen der Zusammensetzung [LaBr3(12-Krone-4)(Aceton)] aufgebaut: La3+ wird von den vier O-Ligatoratomen des 12-Krone-4-Ethers, den drei Br- -Ionen und dem O-Atom des Aceton-Moleküls in Form eines verzerrten quadratischen Antiprismas koordiniert.
    Additional Material: 3 Ill.
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  • 3
    ISSN: 0044-2313
    Keywords: Samarium ; Iodide ; Crown Ether Complexes ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of the Monomeric in-cavity Complex [SmI3(dibenzo-18-crown-6)]Red crystals of [SmI3(dibenzo-18-crown-6)] are obtained by reaction of SmI3 with dibenzo-18-crown-6-ether in acetonitrile. The crystal structure (tetragonal, P43212, Z = 4; a = 962.7(1) pm, c = 2690.0(3) pm; R1 = 0.041; wR2 = 0.101) contains the neutral molecules [SmI3(dibenzo-18-crown-6)]. Distorted triangular SmI3 units are surrounded perpendicularly by one molecule of the crown ether so that a coordination number of 9 results for Sm3+ (three iodide ions and the six oxygen atoms of the crown ether).
    Notes: Bei der Umsetzung von SmI3 mit Dibenzo-18-Krone-6-Ether in Acetonitril erhält man rötliche Kristalle von [SmI3(Dibenzo-18-Krone-6)]. Die Kristallstruktur (tetragonal, P43212, Z = 4; a = 962,7(1) pm, c = 2690,0(3) pm; R1 = 0,041; wR2 = 0,101) ist aus neutralen Molekülen der Zusammensetzung [SmI3(Dibenzo-18-Krone-6)] aufgebaut: Verzerrt trigonal-planare SmI3-Einheiten sind von einem Molekül des Kronenethers umgeben, so daß Sm3+ die Koordinationszahl 9 hat (durch drei Iodid-Ionen und die sechs Sauerstoffatome des Kronenethers).
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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