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  • 1
    ISSN: 0044-2313
    Keywords: Polyiodides ; Triiodides ; N-Alkylurotropinium Ions ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Studies on Polyhalides. 23. Crystal Structures of N-Alkylurotropinium Triiodides UrRI3 with R = Methyl, Ethyl, n-Propyl, and n-ButylThe salts UrRI3 may be prepared by the reaction of N-alkylurotropinium iodides UrRI with iodine I2 at room temperature from aqueous solution.N-methylurotropinium triiodide C7H15N4I3 crystallizes monoclinically in P21/c with a = 1300.8(2) pm, b = 1276.0(3) pm, c = 859.3(2) pm, β = 94.75(2)° and Z = 4. The crystal structure is built up from layers of cations UrMe+ and of linear symmetric triiodide ions I3- alternating along [100].N-ethylurotropinium triiodide C8H17N4I3 crystallizes orthorhombically in Pnma with a = 1397.3(5) pm, b = 1221.3(2) pm, c = 886.2(2) pm and Z = 4. The cationic (UrEt+) and anionic (I3-) layers alternate along [0 10].N-propylurotropinium triiodide C9H19N4I3 crystallizes monoclinically in P21/c with a = 1885.7(5) pm, b = 1657.1(5) pm, c = 1700.5(4) pm, β = 112.39(2)° and Z = 12. The three independent cations and anions are slightly, but differently distorted.N-butylurotropinium triiodide C10H21N4I3 crystallizes monoclinically in P21/m with a = 991.8(3) pm, b = 757.8(2) pm, c = 1128.2(2) pm, β = 90.73(2)° and Z = 2. The crystal structure is stacked by alternating cationic and anionic layers along [001]. The triiodide ion is asymmetric and linear.
    Notes: Die Salze UrRI3 mit R = Me, Et, n-Pr und n-Bu lassen sich durch Umsetzung der N-Alkylurotropiniumiodide UrRI und Iod I2 bei Raumtemperatur aus wäßriger Lösung gewinnen.N-Methylurotropiniumtriiodid C7H15N4I3 kristallisiert in der monoklinen Raumgruppe P21/c mit a = 1300,8(2) pm, b = 1276,0(3) pm, c = 859,3(2) pm, β = 94,75(2)° und Z = 4. In der Kristallstruktur folgen Schichten aus den Kationen UrMe+ und aus gestreckt symmetrischen Triiodid-Ionen I3- längs [100] aufeinander.N-Ethylurotropiniumtriiodid C8H17N4I3 kristallisiert in der orthorhombischen Raumgruppe Pnma mit a = 1397,3(5) pm, b = 1221,3(2) pm, c = 886,2(2) pm und Z = 4. Schichten aus symmetrischen Kationen und Anionen sind längs [010] abwechselnd gestapelt.N-Propylurotropiniumtriiodid C9H19N4I3 kristallisiert in der monoklinen Raumgruppe P21/c mit a = 1885,7(5) pm, b = 1657,1(5) pm, c = 1700,5(4) pm, β = 112,39(2)° und Z = 12. Die drei jeweils unabhängigen Kationen und Triiodid-Ionen sind geringfügig, aber unterschiedlich verzerrt.N-Butylurotropiniumtriiodid C10H21N4I3 kristallisiert in der monoklinen Raumgruppe P21/m mit a = 991,8(3) pm, b = 757,8(2) pm, c = 1128,2(2) pm, β = 90,73(2)° und Z = 2. Die Struktur ist entlang [001] im Wechsel aus kationischen und anionischen Schichten aufgebaut.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 328 (1986), S. 643-647 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A Contribution to the Nickelcatalysed Transesterification and to the Addition of Acrylic Acid Methylester to Alcohols
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 332 (1990), S. 1102-1104 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Preparation of Alkali Metal Addition Compounds by Crystallization from Solution; Di-metal Adducts of Anthracene
    Type of Medium: Electronic Resource
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