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  • 1
    Electronic Resource
    Electronic Resource
    Über die Bestimmung des Hydroxylamins mit Permanganat (1923)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 130 (1923), S. 199-204 
    Details
    ISSN: 0863-1786
    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/zaac.19231300120
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  • 2
    Electronic Resource
    Electronic Resource
    79. Bioanalytisches System zur On-line-Überwachung von Biomedien in Labor, Technikum und Betrieb (1998)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 70 (1998), S. 1119-1120 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330700981
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  • 3
    Electronic Resource
    Electronic Resource
    Über 3d-Element-AroxideProf. Dr. Gerhard Röbisch zum 65. Geburtstage am 12. September 1987 gewidmet (1987)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 551 (1987), S. 61-66 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On 3d-Element AroxidesTHF adducts of CuCl2, CoCl2, and CrCl3 react with phenol, substituted phenols, and 2-naphthol in presence of NaNH2 or triethylamine giving the corresponding metal aroxides. Cu(OC6H5)2 · DMF and Fe(OC6H5)2 · DMF are electrochemical synthesized. The magnetic, spectroscopic, and thermal behaviour of these compounds have been investigated.
    Notes: Die Tetrahydrofuranaddukte des CuCl2, CoCl2 und CrCl3 reagieren mit Phenol, substituierten Phenolen und 2-Naphthol bei Gegenwart von NaNH2 bzw. Triethylamin zu den entsprechenden Metallaroxiden. Cu(OC6H5)2 · DMF Fe(OC6H5)2 · DMF werden auf elektro-chemischem Wege synthetisiert. Die magnetischen, spektroskopischen und thermischen Eigenschaften dieser Komplexe werden untersucht.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19875510806
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  • 4
    Electronic Resource
    Electronic Resource
    Koordinationszahl 4 oder 6 für Lithium??: Die Kristallstruktur von wasserfreiem Lithiumpermanganat, Li[MnO4] (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 1419-1425 
    Details
    ISSN: 0044-2313
    Keywords: Lithium permanganate, Li[MnO4] ; preparation ; crystal structure ; neutron powder data ; MAPLE calculation ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Coordination Number 4 or 6 for Lithium?: The Crystal Structure of Lithium Permanganate, Li[MnO4]Waterless 7Li[MnO4] was obtained by dehydration of 7Li[MnO4] · 3 D2O at 60°C above P4O10 in vacuum as violet powder.The structure determination by neutron diffraction measurements via pulsed polychromatic neutron source [time-of-flight powder diffractometer; profile-R-value = 2.1%, Bragg-R-value = 7.4%] confirms the space group Cmcm with a = 551.402(8), b = 839.754(15), c = 635.911(10) pm (Z = 4); parameters see text. The crystal structure of Li[MnO4] corresponds to the CrVO4-type with coordination number 6 for lithium and 4 for manganese.The Madelung Part of Lattice Energie, MAPLE, the Effective Coordination Numbers, ECoN and the charge distribution were calculated and discussed.
    Notes: Durch Trocknung von 7Li[MnO4] · 3 D2O bei 60°C über P4O10 im Vakuum wurde wasserfreies 7Li[MnO4] als violettes Pulver erhalten.Die Strukturaufklärung mittels Neutronenbeugungsmessungen im gepulsten polychromatischen Neutronenstrahl [Flugzeitdiffraktometer; Profil-R-Wert = 2,1%, Bragg-R-Wert = 7,4%] belegt die Raumgruppe Cmcm mit a = 551,402(8), b = 839,754(15), c = 635,911(10)pm (Z = 4); Parameter siehe Text. Die Kristallstruktur von Li[MnO4] entspricht dem CrVO4-Typ mit der Koordinationszahl 6 für Lithium und 4 für Mangan.Der Madelunganteil der Gitterenergie, MAPLE, Effektive Koordinationszahlen, ECoN und die Ladungsverteilung wurden berechnet und diskutiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190817
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  • 5
    Electronic Resource
    Electronic Resource
    Steroid phosphorus compounds. V - mass spectrometry of phosphinic esters of monohydroxy steroidsAbbreviations: E1 = estrone; A = androsterone; 3αEt = 3α-etiocholanolone; 3βEt = 3β-etiocholanolone; DHEA = dehydroepiandrosterone; DHT = 5α-dihydrotestosterone: T = testosterone: PO, PS and P = the dimethylphosphinic, dimethylthiophosphinic and dimethylphosphinous ester groups of the corresponding hydroxy steroid, respectively. (1976)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 3 (1976), S. 64-70 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The mass spectra of the dimethylphosphinic, dimethylthiophosphinic and dimethylphosphinous ester derivatives of several monohydroxy steroids are reported. The fragmentations of the derivatized steroids largely depend on the nature of the the phosphorus-containing ester group. Phenolic ester derivatives exhibit the base peak at the molecular ion, whereas the spectra of the secondary phosphinic esters are dominated by very intense protonated phosphinic acid ions [Me2 P(XH)(OH)]+ at m/e 95 (X = O) or at m/e 111 (X = S). The present results also indicate the low ionization potential for the phosphinic ester group. Due to their good gas chromatographic properties, these steroid derivatives appear to be particularly suitable for gas chromatographic mass spectrometric analysis of biochemical materials.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200030205
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  • 6
    Electronic Resource
    Electronic Resource
    Anwendungscharakteristika verschiedener Ätzverfahren bei Metallen - Vergleichende Untersuchung metallographischer Ätzverfahren - (1984)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 15 (1984), S. 386-393 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Applicability of Different Etching Methods for Metals - Comparing Investigation of Metallographic Etching ProceduresThe feasibility of different etching techniques in laboratory practice is mainly appointed by the reproducibility of the metallographic micro-structure, which is dependent on the etching method, the etching time and a practical handling of the etching procedure. Comparing investigations concerning the applicability of chemical, electrolytic and ionic etching methods for metals and alloys in electrotechnical industry - with the aim to estimate efficiency and reproducibility of the micro-structure resulting from the different techniques - have been done. Micro-structure estimation will be done by different methods of light-microscopy.In any case physical ion-etching turns out to be the less problematic etching method - in comparison with chemical and electrolytic techniques. Ion etching shows a good reproducibility and allows the simultaneous etching of different materials. The summarizing valuation of the different etching methods includes a list of optimum etching parameters for copper, brass copper-tin and copper-beryllium alloys.
    Notes: Die Einsatzmöglichkeiten unterschiedlicher Ätzverfahren in der Laborpraxis werden im wesentlichen bestimmt durch die Reproduziorbarkeit der ausgebildeten Gefügestrukturen - als Funktion einer bestimmten Ätzmethode, der Ätzzeit und der problemlosen Handhabung der Ätzprozedur. Zur Anwendbarkeit des chemischen und elektrolytischen Ätzens, sowie des Ionenätzens bei Metallen und Legierungen der Elektrotechnik wurden vergleichende Untersuchungen mit dem Ziel durchgeführt, eine Beurteilung von Güte und Reproduzierbarkeit der nach den verschiedenen Ätzprozessen entstandenen Gefügebilder zu ermöglichen.Die Abbildung der Gefügestrukturen geschieht mit Hilfe unterschiedlicher lichtmikroskopischer Beobachtungsverfahren.Das physikalische Ionenätzen erweist sich gegenüber chemischen und elektrolytischen Ätzverfahren in allen Fällen als die problemlosere Ätzmethode, die neben einer guten Reproduzierbarkeit zudem ein gleichzeitiges Ätzen unterschiedlicher Materialien in einem Werkstoff ermöglicht.Eine zusammenfassende Wertung der verschiedenen Ätzverfahren umfaßt die Angabe optimaler Ätzparameter für die Werkstoffe Kupfer, Messing, CuSn 8 und Kupfer-Beryllium.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19840151105
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  • 7
    Electronic Resource
    Electronic Resource
    Separation of alkadiene-1-ol isomers by gas-liquid chromatography (1978)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 1 (1978), S. 71-72 
    Details
    ISSN: 0935-6304
    Keywords: Gas Chromatography ; Capillary, glass ; Separation of the four 10,12-Hexadecadiene-1-ol isomers ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Complete gas-liquid chromatographic separation of the four 10, 12-hexadecadiene-l-ol isomers using a FFAPcoated glass capillary column is described.These measurements are of importance for the analysis of pheromones from biological sources and for the control of material from stereospecific syntheses.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240010115
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  • 8
    Electronic Resource
    Electronic Resource
    Adsorption phenomena of 2, 3, 7, 8-tetrachlorodibenzodioxin and OCDF in high resolution gas chromatography (1987)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 10 (1987), S. 41-42 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography ; Capillary columns ; PCDD's ; PCDF's ; Adsorption phenomena ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240100109
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of aging and moisture on the reactivity of a graphite epoxy prepreg (1981)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 21 (1981), S. 474-482 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The effect of moisture on the curing reaction of Hercules 3501-6/AS graphite-epoxy prepreg was investigated. Test samples of prepreg were aged under humid conditions, while control samples were aged under identical temperature conditions but with negligible humidity. Determinations of the amounts of moisture absorbed and desorbed fom the samples were accomplished gravimetrically. Dielectric analysis was used to monitor the relative reaction rates and overall activation energies of the prepreg after various aging periods. Changes taking place in monomer concentrations were observed using high performance liquid chromatography (HPLC). As aging continued, samples aged under humid conditions displayed, significant decrease in the overall activation energy accompanied by increased reaction rates. This change did not occur in the control samples. Samples aged in high humidity showed increased conversion of monomers to polymer when compared to dry aged samples. The aging time required before the above changes became apparent was temperature dependent; the higher the aging temperature, the sooner the changes in reactivity occurred.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760210807
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  • 10
    Electronic Resource
    Electronic Resource
    Arbeiten zur Chromatographie von Epoxydverbindungen. III. Papierchromatographie der Allyläther des 4,4′-Dioxydiphenyl-propan-2,2 (1961)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 13 (1961), S. 188-196 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Allyläther des 4,4′-Dioxydiphenyl-propan-2,2 lassen sich auf mit Formamid vorbehandeltem Papier mit Gemischen von Benzin und Chloroform als Fließmittel chromatographieren und mit diazotiertem Benzidin bzw. Kaliumpermanganat nachweisen.Dieses Verfahren ermöglicht eine laufende Kontrolle des Reaktionsverlaufs bei der präparativen Darstellung des 4,4′-Dioxydiphenyl-propan-mono- und -diallyläthers sowie eine schnelle und exakte Untersuchung des Reinheitsgrades der Reaktionsprodukte.Ferner stellt das von uns ausgearbeitete Verfahren eine neue Methode zur Untersuchung der CLAISEN-Umlagerung dar. Es konnte damit festgestellt werden, daß diese Umlagerung beim Diallyläther des 4,4′-Dioxydiphenyl-propan-2,2 bereits bei 130 °C beginnt.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19610130311
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