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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 5 (1986), S. 1-10 
    ISSN: 0278-4513
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A one-dimensional computer model of multiphase, chemically reacting flow has been used to analyze a number of DIERS Phase III venting tests.
    Additional Material: 11 Ill.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 68 (1996), S. 1079-1080 
    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
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  • 3
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 16 (1955), S. 1-9 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: 38 Dialkylesters of o-phthalic acid are examined as plasticizers for polyvinyl chloride. The plasticizer efficiency is determined by means of dielectric measurements for the molar plasticizer concentration c = 0.1. In the case of isomeric esters the n-alkylesters always have the highest plasticizer efficiency while with the n-alkylesters the efficiency increases proportionally with the length of the alkyl chain. The influence of chain length and branching of the alkylgroup also shows itself in the viscosity of the pure plasticizer. From the graphical representation of the relationship between plasticizer efficiency Δ T and viscosity η conclusions may be drawn concerning the structure of the alkyl groops.
    Notes: 38 o-Phthalsäuredialkylester werden als Weichmacher für Polyvinylchlorid (PVC) untersucht. Die Weichmacher-Wirksamkeit wird, wie in früheren Arbeiten, mit Hilfe dielektrischer Messungen bestimmt, für die molare Weichmacher-Konzentration c = 0,1. Bei isomeren Estern hat der n-Alkylester immer die höchste Weichmacher-Wirksamkeit und bei den n-Alkylestern steigt die Weichmacher-Wirksamkeit mit der Länge des Alkyls linerar an. Die Länge und Verzweigung des Alkyls macht sich auch in der Viskosität des reinen Weichmachers bemerkbar. Die Kombination von Weichmacher-Wirksamkeit Δ T und Viskosität in dem Diagramm Δ T = f (η) führt zu Hinweisen auf den strukturellen Aufbau der Alkyle.
    Additional Material: 4 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 87 (1975), S. 630-631 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 26 (1995), S. 553-559 
    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: Bestimmung der Spannungstensoren in dünnen, texturierten Kupferschichten mittels Röntgenbeugung bei streifendem EinfallIonenplattierte Kupferschichten wurden mittels Röntgenbeugung hinsichtlich Texturen und Eigenspannungen untersucht. Die vollständigen Orientierungsverteilungsfunktionen wurden bestimmt und scharfe (111)-Fasertexturen gefunden. Die Messung der Dehnungen erfolgte unter streifendem Strahleinfall. Zur Berechnung der Spannungstensoren wurden sowohl texturgewichtete elastische Moduln als auch texturunabhängige elastische Moduln verwendet. Die Bedeutung der Texturmessung für die Spannungstensorbestimmung wird diskutiert. Die gefundenen Spannungen können als thermisch verursacht verstanden werden.
    Notes: Ion-platted thin copper films were examined for residual stresses and texture by X-ray diffraction. The complete orientation distribution functions were determined and sharp (111)-fibre textures were found. The strains were measured by grazing incidence diffraction. The stress tensors were calculated using both texture-weighted elastic compliances and texture-independent X-ray elastic constants. The importance of the texture measurement for the stress tensor determination is discussed. The found stresses can be interpreted as thermally induced.
    Additional Material: 5 Ill.
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  • 6
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The lifetime of cation selective carrier-PVC-membranes partially depends on the components' remaining in the membrane. An exchange of monomeric by polymeric plasticizers with low tendency to migrate lengthens the function time drastically. Other than for Na+ - and NH4+-selective membranes, it is essential for K+ - and Ca2+-selective membranes and optional for H+-selective membranes to incorporate lipophilic anions in order to make the phase transfer catalysis more efficient. The resistence to saponification of phthalic acid polyester gives H+-selective membranes a high stability of measured values even in the alkaline range.For anion selective PVC-membranes, instead of cation selective plasticizers the plasticizing qualities of a liquid charged ligand should be used.The tubular carrier-PVC-membranes of our ion selective flow through measuring systems are diffusion welded to the ends of two PVC-tubes [1] so that they are absolutely tight with no risk of potential leakage. Migration of the membrane components plasticizer and ionophore across this border as well as their extraction [2, 3] into the measuring solution [4] will naturally reduce the membrane's functionning time [5].
    Additional Material: 3 Ill.
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  • 7
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Substituted Alkinyles as Axial Ligands at Hemine Like Bound Iron(III) - Incorporation into a Spectrochemical Series.Substituted lithium alkynyles Li—C≡C—R (R = tBu, Ph, p-Cl—C6H4, Me3Si, iPr3Si, Ph3Si) react with the hemine like macrocyclic iron(III) complex 6,13-di(ethoxycarbonyl)-5, 14-dimethyl-1, 4, 8, 11-tetraazatetradeca-4,6,12,14-tetraenato[2-]iron(III)-iodide (formula 2;) in tetrahydrofuran to form anionic low-spin di-adducts [fe(C≡C—R)2]-. The incorporation of the alkynyles into a spectrochemical series of the axial ligands (studied by the sharp equatorial-ligand-to-metal CT absorption band) results in the wavelength-sequence (nm): OH- (≍ 510) « N3- (≍ 625) 〈 tBu—C≡C- (664) 〈 NH3 (666) 〈 Ph—C≡C- (692) 〈 Ph—NH2 (695) 〈 Me3Si—C≡C- (698) 〈 SCN- (713) 〈 Ph3Si—C ≡ C- (716) 〈 CN- (739) 〈 4-picoline (759) 〈 pyridine (765) 〈 nicotinamide (776) 〈 methylnicotinat (788) 〈 pyrazine (798) and points to a significant π-acceptor ability of the silyl substituents.
    Additional Material: 2 Tab.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 399 (1973), S. 225-230 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A New Contribution to the Phosphazo ReactionThe reaction of acrylonitrile with phosphorus pentachloride gives ClCH2CCl2CCl2NPCl3 (I) and a hexachlorophosphate with the composition C3H2Cl14NP3 (II). For the first time the structure of (II) has been exactly determined by using 1H- and 31P-NMR-spectra. The course of reaction was studied in detail. 3-chloropropionitrile has been found as the product of a secondary reaction. The reaction of butyramide with PCl5 has also been investigated, and was found to be analogous.
    Notes: Bei der Umsetzung von Acrylnitril mit PCl5 entsteht neben ClCH2CCl2CCl2NPCl3 (I) auch das Hexachlorophosphat mit der Zusammensetzung C3H2Cl14NP3 (II). Die Struktur von (II) konnte durch 1H- und 31P-NMR-Untersuchungen erstmals eindeutig bestimmt werden. Der gesamte Reaktionsablauf wurde untersucht. Infolge einer Sekundärreaktion entsteht u. a. 3-Chlorpropionitril. Die Umsetzung von Butyramid mit PCl5 wird ebenfalls beschrieben. Sie zeigt einen analogen Verlauf.
    Additional Material: 3 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 406 (1974), S. 214-220 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Phosphazo Compounds from Anilines with Phosphorus PentachlorideThe reaction of anilines with PCl5 gives the monomer compound ArNPCl3. This will dimerize in many cases to (ArNPCl3)2. There are no indications for the former postulated intermediate product ArNHPCl4. We can correlate the tendency to dimerize with the basicity of the anilines. This is confirmed by the measurements of the constants of basicity in acetonitrile.
    Notes: Bei der Reaktion von Anilinen mit PCl5 entsteht die monomere Verbindung ArNPCl3. Diese dimerisiert in vielen Fällen zu (ArNPCl3)2. Für die früher postulierte Zwischenstufe ArNHPCl4 gibt es keine Hinweise. Die Neigung zur Dimerisation ist mit der Basizität der Aniline korrelierbar. Dies wird durch die Messung der Basenkonstanten in Acetonitril bestätigt.
    Additional Material: 2 Tab.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 479 (1981), S. 113-118 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structural Chemistry of Organotitanium Compounds: Structure of [(π-C5H5)2Ti(NO3)]2OCareful hydrolysis of (π-C5H5)2Ti(NO3)2 in tetrahydrofuran yields crystals of [(π-C5H5)2Ti(NO3)]2O (A). Crystal data of A: monoclinic, space group P21/c; lattice constants: a = 12.656(4), b = 10.181(5), c = 16.197(3) Å, ß = 93.57(3)º, Z = 4. As an X-ray analysis shows, the NO3 groups act as monodentate ligands with Ti—O distances of 2.085 and 2.059 Å. The ligands are arranged in a nearly tetrahedral way around the Ti atoms. The bond angle at the bridging O atom is 171.8º.
    Notes: Bei der vorsichtigen Hydrolyse von (π-C5H5)2Ti(NO3)2 in Tetrahydrofuran entsteht der Zweikernkomplex [(π-C5H5)2Ti(NO3)]2O (A) Kristalldaten von A: monoklin, Raumgruppe P21/c; Gitterkonstanten: a = 12,656(4), b = 10,181(5), c = 16,197(3) Å, ß = 93,57(3)º und Z = 4. Eine Röntgenstrukturanalyse ergibt, daß die Nitratgruppen als einzähnige Liganden mit Ti—O-Abständen von 2,085 und 2,059 Å fungieren. Die Ti-Atome weisen eine annähernd tetraedrische Koordination auf. Der Winkel am Brücken-O-Atom beträgt 171,8º.
    Additional Material: 2 Ill.
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