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  • Inorganic Chemistry  (21)
  • General Chemistry  (19)
  • 1
    Electronic Resource
    Electronic Resource
    Synthesis and Characterisation of New Arsonium Salts and Crystal Structures of Trimethylarsonium Undecafluorodiarsenate (CH3)3AsH+As2F11- and Trimethylarsonium Hexafluoroantimonate (CH3)3AsH+SbF6- (1999)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1999 (1999), S. 2249-2254 
    Details
    ISSN: 1434-1948
    Keywords: Arsonium salts ; Superacidic systems ; Structure elicidation ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of trimethylarsane in the superacidic systems hydrogen/fluoride antimony pentafluoride and hydrogen fluoride/arsenic pentafluoride leads to trimethylarsonium fluorometallates. These salts are stable up to 60 °C and 5 °C, respectively. Structures were successfully elucidated in the cases of trimethylarsonium undecafluorodiarsenate and trimethylarsonium hexafluoroantimonate. (CH3)3AsH+As2F11- crystallizes in the monoclinic space group P21/n with four formula units per unit cell with the dimensions a = 7.362(1), b = 12.589(1), c = 13.598(1) Å and β = 95.37(1)°. (CH3)3AsH+SbF6- crystallizes in the monoclinic space group P21/m with four formula units per unit cell with the dimensions a = 8.313(1), b = 8.855(1), c = 13.285(1) Å and β = 94.358(1)°.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Photoelectron-Spectrum and Electronic Structure of Perfluoro(2,4-dimethyl-3-oxa-2,4-diazapentane) (CF3)2N-O-N(CF3)2 (1998)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 1377-1380 
    Details
    ISSN: 1434-1948
    Keywords: Ab initio calculations ; Electronic structure ; Photoelectron spectroscopy ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The electronic structure of the title compound 1 has been investigated by UV photoelectron spectroscopy and quantum chemical calculations. 1 has two nearly degenerate nN lone-pair orbitals which form the two highest occupied MOs. The third highest occupied MO is mainly localized at the oxygen atom (n0). All calculations indicate that the molecule has a twisted C2 conformation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Über die Darstellung von Arsendichloridtrifluorid, AsCl2F3 (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 506 (1983), S. 178-184 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Preparation of Arsenic Dichloride Trifluoride, AsCl2F3AsCl2F3 is prepared by pyrolysis of [AsCl4]+ [AsF6]-. The vibrational spectra of the new low temperature compound are reported and the valence force constants are calculated. The formation of AsCl2F3 by ligand exchange reactions is discussed.
    Notes: AsCl2F3 wird durch Pyrolyse von [AsCl4]+ [AsF6]- präparativ dargestellt. Es werden die Schwingungsspektren der neuen Tieftemperaturverbindung gemessen und ihre Valenzkraftkonstanten berechnet. Die auf Ligandenaustauschreaktionen beruhende Bildung wird diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19835061121
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  • 4
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Schwefelhalogenide. 8. Trifluormethylbromsulfan - Gasphasenstruktur und Normalkoordinatenanalyse (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 531 (1985), S. 31-40 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Sulfur Halides. 8. Trifluoromethylbromosulfan - Gas Phase Structure and Normal Coordinate AnalysisAn improved method to prepare CF3SBr is reported. An electron-diffraction measurement has been carried out and the following molecular parameter are obtained (rα° values in Å and degree): C—F = 1.331(3), C—S = 1.814(6), S—Br = 2.162(6), CSBr = 99.4(3), FCF = 108.7(9), Tilt = 5.5(5).A reassignment of the vibrational frequencies based on IR-matrix and Raman measurements is given and the valence force constants of CF3SBr are calculated.
    Notes: Es wird über ein verbessertes Verfahren zur Darstellung von CF3SB1 und die Bestimmung der Molekülstruktur durch Elektronenbeugung berichtet. Folgende Parameter werden erhalten (rα°-Werte in Å und Grad): C—F = 1,331(3), C—S = 1,814(6), S—Br = 2,162(6), CSBr = 99,4(3), FCF = 108,7(9), Tilt = 5,5(5).Auf Grund von IR-Matrix- und Raman-Messungen erfolgt eine Neuzuordnung der Schwingungsfrequenzen, die durch eine Normalkoordinatenanalyse unterstützt wird.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855311206
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  • 5
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Schwefelhalogenide. IV. Über Versuche zur Darstellung von festem Dijoddisulfan bei tiefen Temperaturen (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 443 (1978), S. 217-224 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions of the Chemistry of Sulfur Halides. IV. On the Preparation of Solid Disulfurdiiodide at Low TemperaturesBy the reaction of disulfurdichloride with hydrogene iodide at low temperatures we got a solid instable compound. Its infrared spectrum can be assigned to disulfurdiiodide mixed with an adduct of disulfurdiiodide and iodide. In contrary to this we obtained a mixture of sulfur and iodine by the reaction of disulfurdichloride with alkali iodides.
    Notes: Bei der Reaktion von Dichlordisulfan mit Jodwasserstoff-Gas entstehen bei tiefen Temperaturen feste instabile Verbindungen, deren IR-Spektren auf ein Gemisch von Dijoddisulfan und einem Dijoddisulfan-Jod-Addukt hindeuten. Die Umsetzung von Dichlordisulfan mit Alkalijodiden liefert dagegen die Zersetzungsprodukte Schwefel und Jod.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784430124
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  • 6
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Schwefelhalogenide. 11. UV/VIS-spektroskopische Untersuchung Über die Existenz von CF3S(O)I und das Schwingungsspektrum von CF3S(O)Br (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 537 (1986), S. 169-174 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contribution to the Chemistry of Sulfur Halides. 11. UV/VIS Spectroscopic Investigations on the Existence of CF3S(O)I and the Vibrational Spectrum of CF3S(O)BrThe very instable compound CF3S(O)I is identified by correlating its UV/VIS absorptions (245, 310, 340 nm) with those of the homologous trifluoromethylsulfinylhalides and by the decomposition products. The assigned vibrational spectrum of CF3S(O)Br is given.
    Notes: Sehr instabiles CF3S(O)I wird durch Vergleich seiner UV/VIS-Absorptionen bei 245, 310, 340 nm innerhalb der Reihe der Trifluormethylsulfinylhalogenide und durch seine Zerfallsprodukte identifiziert. Es wird die Zuordnung der Schwingungen von CF3S(O)Br angegeben.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865370618
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  • 7
    Electronic Resource
    Electronic Resource
    NMR-spektroskopische Untersuchungen an gemischt-halogenierten Bortrihalogenid-Addukten mit Dimethyl-N-Chloramin (1987)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 549 (1987), S. 195-198 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N.M.R. Spectroscopical Studies on Mixed Halogenated Boron Trihalide Adducts of Dimethyl-N-ChloroamineIt is reported about the formation and n.m.r. spectroscopical characterization of mixed boron trihalide adducts (CH3)2NCl · BF2Cl and (CH3)2NCl · BFCl2.
    Notes: Es wird über die Bildung und NMR-spektroskopische Charakterisierung der gemischten Bortrihalogenid-Addukte (CH3)2NCl · BF2Cl und (CH3)2NCl · BFCl2 berichtet.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19875490620
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  • 8
    Electronic Resource
    Electronic Resource
    Bildung, Struktur und Reaktionen von Methyl(methylimino)boran (1988)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 121 (1988), S. 61-66 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation Structure and Reactions of Methyl(methylimino)-boraneThe iminoborane MeB≡NMe is formed by gas-phase thermolysis of the aminoborane Me2BN(SiMe3)OSiMe3 or the azidoborane Me2BN3. The NMR shifts at -80°C, the IR spectrum in Armatrix, and the PE spectrum correspond to a molecular structure comparable to that of 2-butyne, MeC≡CMe. The title compound is thermally stabilized by cyclotrimerisation, it is butyloborated at the BN bond by tributylborane, and it adds benzyl azide by a [2 +3] cycloaddition.
    Notes: Das Iminoboran MeB≡NMe entsteht bei der Gasphasenthermolyse des Aminoborans Me2BN(SiMe3)OSiMe3 oder des Azidoborans Me2BN3. Die Kernresonanzverschiebungen bei -80°C, das Infrarotspektrum in Argonmatrix und das Photoelektronenspektrum sprechen für einen Molekülbau, der dem von 2-Butin, MeC≡CMe, ähnlich ist. Die Titelverbindung stabilisiert sich thermisch durch Cyclotrimerisierung. Von Tributylboran wird sie an der BN-Bindung butyloboriert, und mit Benzylazid geht sie eine [2 + 3]-Cycloaddition ein.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19881210110
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  • 9
    Electronic Resource
    Electronic Resource
    Über die Bildung von Trichlorosulfonium (IV)-hexafluoro-arsenat(V) (1981)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 114 (1981), S. 3737-3739 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Formation of Trichlorosulfonium (IV) Hexafluoroarsenate(V)Sulfur reacts with chlorine and arsenic Trifluoride under pressure to give [SCl3]+[AsF6]-. As an intermediate oxidizing substance [AsCI4]+ is identified by spectroscopy. Depolarization-Raman-spectra confirm the assignment made in literature.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19811141125
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  • 10
    Electronic Resource
    Electronic Resource
    Structure of O-Methyl-N,N-bis(trifluoromethyl)hydroxylamine, (CF3)2NOCH3 (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 653-656 
    Details
    ISSN: 0009-2940
    Keywords: Hydroxylamine, O-methyl-N,N-bis(trifluoromethyl)-, gas-phase structure of ; Electron diffraction ; Calculations, ab initio ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The molecular structure of (CF3)2NOCH3 was determined by gas electron diffraction. The molecular intensities were reproduced by use of a single conformation with syn orientation of the O-CH3 group relative to the nitrogen lone pair. This was confirmed by ab initio calculations (HF/3-21G(*), polarization functions only on nitrogen, and MP2/6-31G*). The observed structure demonstrates that the generalized anomeric effect is of minor importance to this compound. The following skeletal geometric parameters (bond lengths [pm] and angles [°] with 3-s̰ uncertainties) were derived: N-C 142.9(7), N-O 142(3), O-C 145(3), CNC 118.0(9), CNO 108.1(17), and NOC 109.4(17). The experimental structure is well reproduced by the ab initio calculations.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961290610
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