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  • 1
    ISSN: 0044-2313
    Keywords: Sodium tellurides ; dialkyl tellurides ; X-ray structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Reactions of Sodium Telluride, Na2Te - Crystal Structure of [Na(CH3OH)3]2Te2Sodium telluride, Na2Te 1, is easily obtained by reaction of sodium with hexagonal tellurium in 1,2-dimethoxy-ethane in the presence of catalytic amounts of naphthalene. Upon exposure to oxygen 1 reacts with methanol forming [Na(CH3OH)3]2Te2 2, which crystal structure was determined. Compound 1, prepared in situ, can be conveniently converted into dialkyl tellurides, R2Te (R = C2H5, i-C3H7, CH2 = CH—CH2 3).
    Notes: Natriumtellurid, Na2Te 1, läßt sich auf bequeme Art und Weise aus Natrium und hexagonalem Tellur in 1,2-Dimethoxy-ethan als Reaktionsmedium in Anwesenheit katalytischer Mengen an Naphthalin gewinnen. Bei der Einwirkung von Sauerstoff auf 1 in Gegenwart von Methanol entsteht [Na(CH3OH)3]2Te2 2, dessen Kristallstruktur ermittelt wurde. In situ gewonnenes 1 kann auf einfache Weise in Dialkyltelluride, R2Te, übergeführt werden (R = C2H5, i-C3H7, CH2 = CH—CH2 3).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1925-1930 
    ISSN: 0044-2313
    Keywords: alkylcyclophosphanes ; n.m.r. spectra ; molecular structure ; electron diffraction ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese von Alkylcyclophosphanen aus rotem Phosphor - Molekülstruktur von i-Pr4P4 mittels ElektronendiffraktionAus rotem Phosphor und Natrium wurde in Gegenwart geringer Mengen an Naphthalin in 1,2-Dimethoxyethan als Reaktionsmedium ein Natriumpolyphosphid, (NaP)X, 1 erhalten, das bei Einwirkung von Alkylhalogeniden in Abhängigkeit von der Art des Alkylrestes zu unterschiedlichen Alkylcyclophosphanen reagiert. Im einzelnen wurden erhalten Me5P5 2, Et5P5 3 (mit nicht eindeutig geklärter Konstitution), i-Pr4P4 4 und t-Bu4P4 5.Die Identifizierung von 1 erfolgte röntgenographisch, die von 2-5 mittels ihrer 1H-, 13C-, 31P-NMR- und MS-Spektren. Die Molekülstruktur von 4 wurde durch Elektronendiffraktion ermittelt.
    Notes: A polyphosphide of the type (NaP)X 1 was obtained from red phosphorus and sodium in presence of small amounts of naphthalene in 1,2-dimethoxyethane as solvent. 1 reacts with alkyl halides in dependence on the kind of alkyl group with formation of different alkylcyclophosphanes. As definite compounds Me5P5 2, Et5P5 3 (with not definite constitution), i-Pr4P4 4 and t-Bu4P4 5 could be isolated.1 was identified by X-ray diffraction, 2-5 by means of their 1H, 13C, 31P n.m.r. and mass spectra. The molecular structure of 4 was identified by electron diffraction.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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