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  • 1
    Electronic Resource
    Electronic Resource
    Notizen. Die Metallierung von N,N,N′,N′-Tetramethylethylendiamin (TMEDA) (1987)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 2081-2082 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Metalation of N,N,N′,N′,-Tetramethylethylenediamine (TMEDA)TMEDA may be metalated with good regioselectivity: tert-BuLi attacks preferably a methyl group whereas a methylene group is deprotonated by n-BuLi/tert-BuOK. Thus, trapping with Me3SnCl and hydrolytic work-up give either 53% of Me2N[CH2]2NMe(CH2SnMe3) (2) and 5% of (Me3Sn)(Me2N)C=CH2 (3) or 3 alone (42%), respectively. 3 is formed from deprotonated TMEDA by elimination of amide which can be trapped as Me2N(SnMe3) (5); some trans-(Me3Sn)CH=CH(NMe2) (4) is also obtained. The structures of the compounds follow mainly from 1H-, 13C-, 15N-, and 119Sn-NMR data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19871201220
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  • 2
    Electronic Resource
    Electronic Resource
    Dialkyl(η5-cyclopentadienyl)chromium Derivatives with Extreme Values of 1(2H-NMR Parameters (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 897-899 
    Details
    ISSN: 0009-2940
    Keywords: Dialkylchromium(III) half-sandwich molecules ; Paramagnetic 1(2H- and 13C-NMR data ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The title compounds CpCrR2(PR3′) (R = CH3, CH2C6H5, CH2SiMe3) and Cp★Cr(CH3)2(PMe3) (3b) have been prepared, and a piano-stool geometry has been established for 3b by X-ray structure analysis. Convenient observation of the hydrogen atoms 1′-H of R is only possible by 2H NMR giving signals which are up to 6200 Hz broad and shifted up to -1373 ppm.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891220518
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  • 3
    Electronic Resource
    Electronic Resource
    Pentabenzylcyclopentadienyl(triphenylphosphan)gold(I) (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 1423-1426 
    Details
    ISSN: 0009-2940
    Keywords: Cyclopentadienylgold(I) complexes ; Pentabenzylcyclopentadienyl metal complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Pentabenzylcyclopentadienyl(triphenylphosphine)gold(I)Pentabenzylcyclopentadienyl(triphenylphosphine)gold(I) was prepared by the reaction of chloro(triphenylphosphine)gold(I) with pentabenzylcyclopentadienyllithium and characterized by NMR spectroscopy and X-ray structural analysis. The molecule shows a linearly coordinated gold with a σ-bonded cyclopentadienyl ring with a “slip distortion”, typical for cyclopentadienylgold(I) compounds. Three of the five benzyl ligands are directed towards the metal.
    Notes: Pentabenzylcyclopentadienyl(triphenylphosphan)gold(I) wurde durch Reaktion von Chloro(triphenylphosphan)gold(I) mit Pentabenzylcyclopentadienyllithium erhalten und durch NMR-Spektroskopie und Röntgenstrukturanalyse charakterisiert. Das Molekül zeigt ein linear koordiniertes Gold-Atom, wobei der σ-gebundene Cyclopentadienyl-Ring die für Cyclopentadieylgold(I)-Verbindungen typische „slip distortion“ aufweist. Von den fünf Benzyl-Gruppen sind drei zum Metallatom hin gerichtet.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891220807
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