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  • 1
    Electronic Resource
    Electronic Resource
    Darstellung, Struktur und Reaktionen von N,N-Difluorsulfonyl-fluoridamidProfessor K.-H. König zum 60. Geburtstage am 30. Mai 1986 gewidmet (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 539 (1986), S. 191-194 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation, Structure, and Reactions of N,N-DifluorosulfonylfluoridamideFSO2NF2 is obtained in high yield by fluorination of FSO2NH2 at room temperature. The reaction of FSO2NF2 with Et2NH yields FSO2NEt2 and HNF2. The structure of FSO2NF2 was determined by electron diffraction analysis.
    Notes: Die Fluorierung von FSO2NH2 bei Raumtemperatur führt in kurzer Zeit in hoher Ausbeute zu FSO2NF2. Die Umsetzung von FSO2NF2 mit Et2NH liefert FSO2NEt2 und HNF2. Der molekulare Aufbau von FSO2NF2 wurde durch Elektronenbeugung bestimmt. Das Molekül besitzt Cs-Symmetrie. Auffallend ist der relativ lange S—N-Abstand von 175,5(6) pm.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865390819
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  • 2
    Electronic Resource
    Electronic Resource
    High resolution electron microscopy studies of Ba4Nb14O23Dedicated to Professor Harald Schäfer on his 80th Birthday (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 133-137 
    Details
    ISSN: 0044-2313
    Keywords: Barium niobium oxide, Ba4Nb14O23 ; cluster ; electron microscopy ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Untersuchungen an Ba4Nb14O23 mittels hochauflösender Elektronenmikroskopie.Die neue Verbindung Ba4Nb14O23, wurde durch Tempern von Gemengen von Ba5Nb4O15, Nb2O5 und Nb bei 1 450°C unter Ar erhalten. Ba4Nb14O23 wurde durch Untersuchungen mittels hochauflösender Elektronenmikroskopie und Röntgenpulveruntersuchungen charakterisiert. Die Verbindung kristallisiert orthorhombisch C-zentriert mit a=20.782(4), b=12.448(3), c=4.147(1) Å und Z=2. Die Kristallstruktur von Ba4Nb14O23 kann als intergrowth zwischen BaNbO3 und NbO beschrieben werden. Charakteristische Baueinheiten sind Dreierketten spitzenverknüpfter Nb6-Oktaeder, die über Stränge perowskitartiger Baugruppen zu einem dreidimensionalen Netzwerk verknüpt sind.
    Notes: The new compound, Ba4Nb14O23, has been prepared by heating mixtures of Ba5Nb4O15, Nb2O5 and Nb at 1 450°C under Ar. Ba4Nb14O23 has been studied by means of high resolution electron microscopy and X-ray powder diffraction techniques. It has a C-centered orthorhombic unit cell with a=20.782(4), b=12.448(3), c=4.148(1) Å and Z=2. The structure of Ba4Nb14O23 can be considered as being an intergrowth between BaNbO3 and NbO. Characteristic building units are triple chains of corner sharing Nb6 octahedra which are connected via columns of the perovskite type structure to a three dimensional network.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190122
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  • 3
    Electronic Resource
    Electronic Resource
    A Structural Study of Selenobenzamides: Crystal Structures and Dynamic 13C NMR (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 49-54 
    Details
    ISSN: 0009-2940
    Keywords: 4-(p-Bromoselenobenzoyl)morpholine ; 4-[(p-(Dimethylamino)selenobenzoyl]morpholine ; Hindered rotation ; Hammett treatment ; Selenoamides ; Amides ; Selenium compounds ; Structure elucidation ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The solid-state structures of (p-bromoselenobenzoyl)morpholine (2a) and [p-(dimethylamino)selenobenzoyl]morpholine (2b) were determined by X-ray diffraction. Both molecules show a flat selenoamide group. The larger contribution of resonance stabilization by the aromatic ring carrying the p-dimethylamino substituent is reflected by the smaller interplanar angle Θ between the aromatic ring and the selenoamide group [53.3(1)° vs. 81.1(1)°] and by the shorter length of the C=Se bond [1.824(5) Å vs. 1.840(3) Å]. The Gibbs free energy of activation of C-N bond rotation (ΔG≠rot) of five p-substituted (selenobenzoyl)morpholines was determined by dynamic 13C NMR. The activation barriers were found to range from 61.6 kJ/mol (X = NNMe2) to 75.1 kJ/mol (X = H). The ΔG≠rot values of the corresponding (thiobenzoyl)morpholines were found to be from 3.2 kJ/mol (X = NMe2) to 5.0 kJ/mol (X = H) lower. In both cases, ΔG≠rot showed an excellent linear Hammett correlation with s̰+p.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971300108
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  • 4
    Electronic Resource
    Electronic Resource
    Substitutionsreaktionen an Alkylbenzolen unter Verwendung von Trimethylsilylazid und Tetrafluor-1,2-ethandisulfenyl-dichlorid (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 1071-1072 
    Details
    ISSN: 0009-2940
    Keywords: 1,3,2-Dithiazolidines ; Staudinger reaction ; Sulfenyl halides ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Substitution reactions of Alkylbenzenes by Use of Trimethylsilyl Azide and Tetrafluoro-1,2-ethanedisulfenyl Dichloride1,3,2-Dithiazolidines 4 are obtained in moderate and good yields from various alkylbenzenes 1, trimethylsilyl azide (2), and tetrafluoro-1,2-ethanedisulfenyl dichloride (3). A radical mechanism is proposed for this reaction.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891220610
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  • 5
    Electronic Resource
    Electronic Resource
    Darstellung von 1,2-Bisalkinylthioether des TetrafluorethansProfessor Ulrich Wannagat zum 65. Geburtstage am 31. Mai 1988 gewidmet (1988)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 560 (1988), S. 55-58 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation of 1,2-Bisalkinylthioether of 1,1,2,2-Tetrafluoroethane1,2-Bisalkinylthioether of 1,1,2,2-tetrafluoroethane are obtained by known procedures with lithiumalkinylides, prepared in situ, and 1,1,2,2-tetrafluoroethane-1,2-bissulfenylchloride.The reactions proceed at low temperatures in non polar solvents. 2a-2e are obtained in acceptable yields. The compounds are air stable but moisture sensitive. The products have been characterized on the basis of n.m.r., i.r., and mass spectra.
    Notes: 1,2-Bisalkinylthioether des 1,1,2,2-Tetrafluorethans werden nach bekannten Verfahren mit in situ hergestellten Lithiumalkinyliden und 1,1,2,2-Tetrafluorethan-1,2,-bissulfenylchlorid 1 erhalten. Die Umsetzungen in unpolaren Lösungsmitteln bei tiefen Temperaturen ergeben die hydrolyseempfindlichen, luftstabilen Verbindungen 2a-2e. Die Produkte werden anhand von NMR-, IR- und Massenspektren charakterisiert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19885600107
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  • 6
    Electronic Resource
    Electronic Resource
    Ueber einige Abkömmlinge aromatischer Amine (1890)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 23 (1890), S. 2587-2599 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.189002302154
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