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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 394 (1972), S. 157-170 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of CF3COOH with Chlorophosphines RnPCl3-n (R = C2H5, C6H5; n = 1, 2) gave the thermal and storage instable mixed anhydrides RnP(OCOCF3)3-n (Alkyl- and Aryl phosphonic- and Phosphinic acid-Trifluoroacetic acid anhydrides) (1, 4, 8, 13). During storage at room temperature or advantageously at controlled temperature increase these anhydrides undergo rearrangement and condensation, yielding intermediates, which could be isolated in the cases of [CF3CO(C2H5)P(O)]2O (Ethyl-trifluoroacetyl phosphinic acid anhydride) (2), C6H5P(O)(OCOCF3)2 (Bistrifluoroacetyl benzene phosphonic acid) (5) and (C2H5)2P(O)OP(C2H5)2(COCF3)2 Diethylphosphinic acid-bistrifluoroacetyl-diethylorthophosphinic acid anhydride (9). The thermally stable final products are formed.
    Notes: Umsetzung von CF3COOH und Chlorphosphinen RnPCl3-n (R = C2H5, C6H5; n = 1, 2) liefert thermisch und lagerinstabile gemischte Anhydride RnP(OCOCF3)3-n (Alkyl- bzw. Aryl-Phosphonsäure und -Phosphonigsäure-Trifluoressigsäureanhydride) (1, 4, 8, 13): Diese gehen bei Lagerung bei Raumtemp., in besser kontrol-lierbarer Weise bei definierter Temperatursteigerung unter Umlagerung und Kondensation über die in Einzelfällen faßbaren Zwischenstufen Äthyl-trifluoracetylphosphonsäurean-hydrid [CF3CO(C2H5)P(O)]2P (2), Bis-trifluoracetylbenzolphosphonsäure C5H5P(O)(COCF3)2 (5) und Diäthylphosphinsäure-bistrifluoracetyl-diäthylorthophosphinsäureanhydrid (C2H5)2P(O)OP(C2H5)2(COCF3)2 (9) in die unter Decarbonylierung entstehenden stabilen End-produkte Bis-trifluormethyl-äthan(benzol)phosphonsäureanhydrid [R(CF3)P(O)]2O (3, 7) und Dialkyl(aryl)phosphinsäure-bistrifluormethyl-dialkyl(diaryl)orthophosphinsäure-anhydrid R2P(O)OP(R2)(CF3)2 (11, 14) über.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 404 (1974), S. 161-163 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Perfluoroalkylated Acids of Phosphorus. II. On Trifluoromethyl Benzene Phosphinic AcidBis-(trifluoromethyl-benzene) phosphinic acid anhydride 1, easily formed by CF3COOH and C6H5PCl2, yields on reaction with aqueous Na2CO3 solution the sodium salt of trifluoromethyl benzene phosphinic acid 2. The acid itself is isolated by ion exchange as a hygroscopic and highly acidic substance.
    Notes: Das aus CF3COOH und C6H5PCI2 leicht zugängliche Bis-(trifluormethyl-benzol-)phosphinsäure-anhydrid 1 läßt sich mit wäßriger Na2CO3-Lösung zum Na-trifluormethyl-benzol-phosphinat umsetzen, aus dem über Ionenaustausch die freie, hygroskopische und stark acide Trifluormethyl-benzol-phosphinsäure 2 dargestellt werden konnte.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Perfluoroalkylated Acids of Phosphorus. III. Diphenyl Trifluoromethyl and Diphenyl Trifluoroacetyl Phosphinic Oxide as Intermediates in the Preparation of Diphenyl Phosphinic Acid(Bis-Trifluoromethyl Diphenyl Orthophosphinic Acid) Anhydride(C6H5)2P(O)CF3 (3) and (C6H5)2P(O)C(O)CF3 (2) were identified as intermediates in the thermal rearrangement and condensation of (C6H5)2POCOCF3 by IR-, NMR- and mass spectroscopy. An improved method for the preparation of (C6H5)2P(O)—O—P(C6H5)2(CF3)2 is given.
    Notes: (C6H5)2P(O)CF3 3 und (C6H5)2P(O)C(O)CF3 2 wurden IR-, NMR- und massenspektroskopisch als Zwischenprodukte der thermischen Umlagerung und Kondensation von (C6H5)2POCOCF3 nachgewiesen. Eine verbesserte Darstellungsmethode für (C6H5)2P(O)—O—P(C6H5)2(CF3)2 wird angegeben.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0044-2313
    Keywords: N-chloro-N-methylammonium hexafluoroarsenate, -stibate ; syntheses ; i.r., n.m.r. spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: About the Preparation of N-Chloro-N-Methylammonium Salts (CH3)nNCl4-n+MF6- (n = 1-3; M = As, Sb) and (CH3)2NClX+MF6- (X = F, Br)Simple one-step methods for the preparation of the methylated chloroammonium salts (CH3)nNCl4-n+MF6- (n = 1-3; M = As, Sb) and for (CH3)2NClX+MF6- (X = F, Br) are reported. Their vibrational and NMR-spectroscopical data are discussed in comparison.
    Notes: Es werden einfache, einstufige Synthesewege für die Darstellung der methylierten Chlorammoniumsalze (CH3)2NCl4-n+MF6- (n = 1-3; M = As, Sb) und für (CH3)2NClX+MF6- (X = F, Br) angegeben. Die schwingungs- und NMR-spektroskopischen Daten der Kationen werden zusammenhängend diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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