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  • 1
    Electronic Resource
    Electronic Resource
    Dialyse, Ultrafiltration und Koagulation von Molybdänsäure (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 184 (1929), S. 135-144 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Aus unseren Versuchen über die Dialyse und Ultrafiltration einer Molybdänsäurelösung (aus Ammoniummolybdat und Chlorwasserstoff) lassen sich folgende Schlüsse ziehen: aFrisch hergestellte Molybdänsäurelösung enthält beträchtliche Mengen des gelösten Stoffes im Molekularzustand. 1,550 g Molybdänsäure in 100 cm3 Lösung enthielten 47,8% molekular gelöst, so daß sie nicht durch ein Ultrafilter zurückgehalten wurden.bDie Menge der molekular gelösten Molybdänsäure nimmt mit der Zeit ab.cEin Zusatz von Säure vermehrt die Menge der kolloiden Molybdänsäure, während ein Zusatz von Alkali sie vermindert.
    Additional Material: 16 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291840110
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  • 2
    Electronic Resource
    Electronic Resource
    Hysteresis bei der Sol-Gel-Umwandlung (1930)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 194 (1930), S. 305-315 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19301940125
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  • 3
    Electronic Resource
    Electronic Resource
    Die Bildung der Gallerten von Vanadiumpentoxyd und anderen anorganischen Stoffen (1926)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 152 (1926), S. 399-404 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Feste durchsichtige Gallerten von Vanadiumpentoxyd lassen sich leicht herstellen durch Dialyse eines Sols von Vanadiumpentoxyd.Die Koagulation eines nicht dialysierten konzentrierten Sols von Vanadiumpentoxyd durch Elektrolyte führt zur Bildung einer Gallerte.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19261520142
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  • 4
    Electronic Resource
    Electronic Resource
    Peptisation und Bildung von komplexen Ionen (1926)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 152 (1926), S. 405-412 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die Versuchsergebnisse zeigen, daß der Bildung von komplexen Ionen aus einer wenig löslichen Substanz (besonders in frisch gefällter Form) die Bildung eines Kolloides vorausgeht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19261520143
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  • 5
    Electronic Resource
    Electronic Resource
    Verhalten von Kieselsäure, Vanadinsäure, Wolframsäure, Molybdänsäure, Antimonsäure und Tellursäure im Kolloidzustand (1930)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 190 (1930), S. 421-427 
    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.19301900142
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  • 6
    Electronic Resource
    Electronic Resource
    Zähigkeit und Gallertbildung von Cerihydroxyd-Sol (1927)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 164 (1927), S. 63-68 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Man erhält feste, durchsichtige Gallerten, wenn man zu einem Sol von Cerihydroxyd  -  hergestellt durch Dialyse einer Lösung von Ceriammoniumnitrat in der Kälte  -  Elektrolyte zusetzt. Die Gallertbildung findet nicht statt bei dem Sol desselben Stoffes, das in der Hitze hergestellt ist.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19271640104
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  • 7
    Electronic Resource
    Electronic Resource
    Study of polymer-polymer complex formation involving phenolic copolymer, non-ionic polymers, and polyelectrolytes (1991)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 184 (1991), S. 99-110 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Aus einem phenolischen Copolymeren bekannter Zusammensetzung und verschiedenen nicht ionischen Homopolymeren (PVP, PEO, PVA) sowie Polyelektrolyten wie PAA und PEI wurden in Lösung Mehrkomponenten-Interpolymerkomplexe hergestellt. Die Bildung dieser Komplexe wurde mit verschiedenen Methoden, wie Viskosimetrie, Potentiometrie, Konduktometrie und IR-Spektroskopie untersucht. Es wird ein Schema zur Erklärung der Art der Wechselwirkung zwischen den verschiedenen Polymerkomponenten vorgeschlagen.
    Notes: Multicomponent interpolymer complexes have been prepared by interacting a phenolic copolymer of known composition with several non-ionic homopolymers, e.g., PVP, PEO, PVA and polyelectrolytes, such as PAA and PEI. The formation of these complexes has been studied by several techniques, such as viscometry, potentiometry, conductometry, and IR spectra. A scheme has been presented to explain the mode of interaction of the various component polymers.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1991.051840109
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  • 8
    Electronic Resource
    Electronic Resource
    Study of three and four component intermacromolecular complexes involving acrylic copolymers, metal ions, and non-ionic polymers (1992)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 200 (1992), S. 1-13 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Poly(methacrylsäure-co-methacrylamid) und Poly(acrylsäure-co-acrylamid) wurden hergestellt und mit bekannten Methoden charakterisiert. Die jeweiligen Comonomereinheiten der beiden Copolymeren können durch Wasserstoffbrückenbindung und Ion-Dipol-Wechselwirkungen Komplexe bilden. Die nicht-komplexierten Einheiten der Intercopolymerkomplexe können noch entweder mit anderen Homopolymeren wie Poly(N-vinylpyrrolidon) oder Poly(oxyethylen) wechselwirken oder mit Übergangsmetallionen drei- und vierkomponentige Komplexe bilden. Die Bildung solcher Komplexe wurde mittels Viskosimetrie, Konduktometrie, Potentiometrie und IR- und UV-Spektroskopie untersucht.
    Notes: Poly(methacrylic acid-co-methacrylamide) and poly(acrylic acid-co-acrylamide) have been synthesized and characterized by known methods. The respective comonomer units of the two copolymers enter into complex formation through hydrogen bonding and ion-dipole interactions. The unreacted units in the intercopolymer complex also interact with homopolymers such as poly(N-vinylpyrrolidone) and poly(oxyethylene) as well as transition metal ions to form three and four component intermacromolecular complexes. Formation of these complexes could be shown through several experimental techniques, e.g. viscometry, conductometry, potentiometry, IR and UV spectrophotometry.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1992.052000101
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  • 9
    Electronic Resource
    Electronic Resource
    New method for the direct calculation of electron density in many-electron systems. I. Application to closed-shell atoms (1983)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 23 (1983), S. 1-26 
    Details
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new density-functional equation is suggested for the direct calculation of electron density ρ(r) in many-electron systems. This employs a kinetic energy functional T2 + f(r)T0, where T2 is the original Weizsäcker correction, T0 is the Thomas-Fermi term, and f(r) is a correction factor that depends on both r and the number of electrons N. Using the Hartree-Fock relation between the kinetic and the exchange energy density, and a nonlocal approximation to the latter, the kinetic energy-density functional is written (in a.u.) \documentclass{article}\pagestyle{empty}\begin{document}$$ t[\rho] = {\raise0.7ex\hbox{$1$} \!\mathord{\left/ {\vphantom {1 4}}\right.\kern-\nulldelimiterspace}\!\lower0.7ex\hbox{$4$}}\nabla ^2 \rho + {\raise0.7ex\hbox{$1$} \!\mathord{\left/ {\vphantom {1 8}}\right.\kern-\nulldelimiterspace}\!\lower0.7ex\hbox{$8$}}(\nabla \rho \cdot \nabla \rho)/\rho + C_k f({\bf r})\rho ^{5/3}, $$\end{document} where \documentclass{article}\pagestyle{empty}\begin{document}$ C_k = {\raise0.7ex\hbox{$2$} \!\mathord{\left/ {\vphantom {2 {10}}}\right.\kern-\nulldelimiterspace}\!\lower0.7ex\hbox{${10}$}}(3\pi ^2)^{2/3} $\end{document}. Incorporating the above expression in the total energy density functional and minimizing the latter subject to N representability conditions for ρ(r) result in an Euler-Lagrange nonlinear second-order differential equation \documentclass{article}\pagestyle{empty}\begin{document}$$ \left[{ - {\raise0.7ex\hbox{$1$} \!\mathord{\left/ {\vphantom {1 2}}\right.\kern-\nulldelimiterspace}\!\lower0.7ex\hbox{$2$}}\nabla ^2 + v_{{\rm nuc}} ({\bf r}) + v_{{\rm cou}} ({\bf r}) + v_{XC} ({\bf r}) + {\raise0.7ex\hbox{$5$} \!\mathord{\left/ {\vphantom {5 3}}\right.\kern-\nulldelimiterspace}\!\lower0.7ex\hbox{$3$}}C_k g({\bf r})\rho ^{2/3}} \right]\phi ({\bf r}) = \mu \phi ({\bf r}) $$\end{document} where μ is the chemical potential, we have ρ(r) = |φ(r)|2, and g(r) is related to f(r). Numerical solutions of the above equation for Ne, Ar, Kr, and Xe, by modeling f(r) and g(r) as simple sums over Gaussians, show excellent agreement with the corresponding Hartree-Fock ground-state densities and energies, indicating that this is likely to be a promising method for calculating fairly accurate electron densities in atoms and molecules.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560230104
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  • 10
    Electronic Resource
    Electronic Resource
    Quantum fluid dynamics of many-electron systems in three-dimensional space (1982)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 22 (1982), S. 871-888 
    Details
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In presence of external electric and magnetic fields, the Schrödinger equation for many-electron systems is transformed into a continuity equation and an Euler-type equation of motion in configuration space. Then, using the natural-orbital Hamiltonian, as defined by Adams, the two fluid-dynamical equations are derived in the three-dimensional space. This generates a “classical” view of such quantum systems, corresponding to an MCSCF wave function: The many-electron Schrödinger fluid consists of individual fluid components, each corresponding to a natural orbital and having its own charge density and current density. The local observables, viz., the net charge density and net current density, are obtained by merely summing over the natural orbitals, with the occupation numbers as weight factors; but, the net velocity field cannot be so obtained. Further, although each fluid component moves irrotationally in the absence of a magnetic field, the net velocity field is not irrotaional. The irrotational character of each velocity component is destroyed by rotation of the nuclear framework of the system while electron spin introduces an additional term, the spin magnetization moment, into each component current density. The physical significance of the fluid-dynamical equations as well as their advantages and disadvantages are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560220503
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