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  • Inorganic Chemistry  (13)
  • 07.60.Fs  (2)
  • 73.40  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Ellipsometric measurement of magnetooptical nonreciprocal effects (1986)
    Springer
    Applied physics 39 (1986), S. 15-18 
    Details
    ISSN: 1432-0649
    Keywords: 07.60.Fs ; 78.20.Ls ; 42.60.-v
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract To detect small rotation rates with a ring laser the two counter-propagating beams must be uncoupled. This lock-off can be realized using nonreciprocal optical effects yielding different optical path lengths for the two waves. Usually magnetooptical effects are employed for nonreciprocity. To measure, instead of calculating from optical constants, the magnitude of this nonreciprocal effects an ellipsometric method is proposed. Lock-off elements using Faraday or Kerr effect (polar and transverse, respectively) are treated. First measurements were made on FeNi films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695587
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  • 2
    Electronic Resource
    Electronic Resource
    Regularization in ellipsometry (1988)
    Springer
    Applied physics 45 (1988), S. 1-5 
    Details
    ISSN: 1432-0649
    Keywords: 02.60.Nm ; 07.60.Fs ; 78.20.−e
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The continuous variation of the refractive index with the depth in the vicinity of surfaces can be determined by ellipsometry without destroying the object of measurements. The presented method does not impress any given structure to the profile and is applicable to just the range of layer thicknesses interesting to optics (about λ/4 to λ/2). The theoretical approach to interpret the measured data leads to an integral equation that is numerically inverted by regularization to filter out the destabilizing effects of measurement errors. The regularizing operator and regularization parameter responsible for this “filtering” are founded on physical arguments and experiment, respectively. These results can be transferred to other regularization problems based on quantities related to volume (e.g. density, temperature).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692332
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  • 3
    Electronic Resource
    Electronic Resource
    Microwave evaluation of the conductive filler particles of carbon black-rubber composites (1993)
    Springer
    Applied physics 56 (1993), S. 299-302 
    Details
    ISSN: 1432-0630
    Keywords: 72.20 ; 73.40 ; 82.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Samples of carbon black loaded nitrile rubber are measured at microwave frequencies (waveguide transmission and reflection). The observed dielectric relaxation is interpreted using a two phase effective medium model (Böttcher formula). The two phases are identified with free rubber as insulating matrix and a conductive filler of a priori unknown parameters (volume fraction, permittivity, conductivity). Supported by SEM and de measurements the results allow to associate the filler phase with adsorbate covered carbon black. In this way the bulk conductivity of carbon black loaded rubber can be explained by (statistical) percolation, which has been not possible taking pure carbon black particles as the percolating elements. Because the effective conductivity of the filler particles deduced from the microwave measurements characterizes mainly the particles' surface it is supposed that the adsorbate may become conductive by the chemical and physical interactions of polymer and carbon black during the preparation of the composite. Reference is made to the doping of rubber resulting in conductivities of the same order of magnitude.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324345
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  • 4
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie N-organylsubstituierter Metallamide. XIX. Umsetzung von [Co(NPh2)2]2 mit CO - ein neuer Weg zur Synthese eines Innerkomplexes des Cobalt(II) mit einem Anthranilsäurederivat; Molekularstruktur von [Co(NPh(o—C6CONPh2))2] (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 569 (1989), S. 183-191 
    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 N-substituted Metal Amides. XIX. Reaction of [Co(NPh2)2]2 with CO - a New Way for the Synthesis of an Chelate Complex of Cobalt (II) with an Derivative of Anthranilic Acid; Molecular Structure of [Co(NPh(o—C6H4CONPh2))2]Reaction of CO (1 atm, room temperature) with [Co(NPh2)2]2 (I) in benzene (mole ratio 3 : 1) gives Co(CO)3(NPh2)4(benzene)1·6 (II). By adding more CO to the reaction mixture (mole ratio 6 : 1) Co4(CO)12 (III) and a dark red compound of the analytical composition C50H38CoN4O2 (IV) could be isolated. The structure of the red compound was determined by X-ray diffraction. This investigation show IV to be a cobalt(II) complex of an derivative of the anthranilic acid, [Co(NPh(o—C6H4CONPh2))2] (IV). The cobalt coordination in this compound is a distorted tetrahedron. Crystal data of IV: space group P1 with a = 12.449(1) Å, b = 12.431(1) Å, c = 13.223(1) Å, α = 95.47(1)°, β = 95.37(1)°, γ = 94.10(1)°, and Z = 2.
    Notes: Bei der Umsetzung von CO (1 atm, Raumtemperatur) mit [Co(NPh2)2]2 (I) in Benzen im Molverhältnis 3 : 1 entsteht Co2(CO)3(NPh2)4(benzen)1,6 (II); im Molverhältnis 6 : 1 bildet sich ein Reaktionsgemisch, aus dem Co4(CO)12 (III) sowie eine dunkelrote Verbindung der analytischen Zusammensetzung C50H38CoN4O2 (IV) isoliert werden kann. Die Röntgenstruktur-bestimmung von IV ergab, daß es sich um den ein Anthranilsäurederivat als Liganden enthaltenden Komplex [Co(NPh(o—C6H4CONPh2))2] IV handelt, der eine verzerrt tetraedrische Koordination aufweist.Kristalldaten für IV: Raumgruppe P1 mit a = 12,449(1) Å, b = 12,431(1) Å, c = 13,223(1) Å, α = 95,47(1)°, β = 95,37(1)°, γ = 94,10(1)° und Z = 2.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895690120
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  • 5
    Electronic Resource
    Electronic Resource
    Struktur und Eigenschaften von ternären und quaternären Seltenerd  -  Übergangsmetall-Oxidsystemen vom K2NiF4-und CaFe2O4-Typ (1970)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 377 (1970), S. 316-320 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New compounds from K2NiF4- and CaFe2O4-type were prepared by solid state reactions. From X-ray, magnetic and X-ray spectroscopic investigations the scatter of intensities, ratio of valences and the magnetic behaviour of the individually compounds are discussed.
    Notes: Durch Festkörperreaktionen wurden neue Verbindungen vom K2NiF4- und CaFe2O4-Typ dargestellt.Auf Grund von röntgenographischen, magnetischen und röntgenspektroskopischen Messungen wurden der Intensitätsverlauf, die Wertigkeitsverhältnisse und das magnetische Verhalten der einzelnen Verbindungen diskutiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19703770314
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  • 6
    Electronic Resource
    Electronic Resource
    Kristall- und MolekülStruktur von Bis(1,1-diäthyl-3-benzoyl-thioureato)palladium(II) (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 433 (1977), S. 237-241 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal and Molecular Structure of Bis(1,1-diethyl-3-benzoyl-thioureato)palladium(II)The crystal structure of the complex bis(1,1-diethyl-3-benzoyl-thioureato)palladium(II) has been determined by X-ray crystal structure analysis. The substance crystallizes monoclinic, space group P21/n and cell dimensions a = 13.63, b = 19.88, c = 10.48 Å, β = 101.4° and 4 formula units in the unit cell. The structure was solved by conventional heavy atom methods and has been refined to a final R-value of 0.12. The S and O atoms are arranged in cis-position. Each Pd—S and Pd—O distances are different. The chelate rings are arranged in a plane.
    Notes: Die Kristallstruktur von Bis(1,1-diäthyl-3-benzoyl-thioureato)palladium(II) wurde durch Röntgeneinkristallstrukturanalyse bestimmt. Die Verbindung kristallisiert monoklin, Raumgruppe P21/n mit a = 13,63, b = 19,88, c = 10,48 Å, β = 101,4° Z = 4. Die Struktur wurde mit Hilfe der Schweratommethode gelöst und bis zu einem R-Wert von 0,12 verfeinert. Die S- und O-Ligatoratome sind in cis-Stellung angeordnet. Alle Pd—S- und Pd—O-Abstände sind unterschiedlich lang. Die Chelatringe sind eben gebaut.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774330127
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  • 7
    Electronic Resource
    Electronic Resource
    Wechselwirkungen zwischen Hetero-π-Systemen und Zentralmetallen niedriger Oxydationsstufen: Stöchiometrische Verknüpfungsreaktionen von Azomethinen und 1,3-Dienen am Nickel(0) (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 472 (1981), S. 149-161 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Interactions between Hetero-π-Systems and Central Metals in Low Oxidation States: Stoichiometric Reactions of Azomethines and 1,3-Dienes with Nickel(0)Azomethines and 1,3-Dienes react with Ni(COD)2 under oxydative coupling to form different types of organo nickel(II) compounds. The route of this reactions depends on the nature of the azomethines and dienes and can be controlled by kinetic and thermodynamic parameters. The new complexes are investigated by IR, MS, and H-NMR measurements. The reaction of cinnamaldehydanil and dienes with Ni(COD)2 gives a binuclear complex. X-ray analysis shows that 2 C7N-chains are bonded to 2 Nickel(II) central atoms.
    Notes: Azomethine und 1,3-Diene reagieren mit Ni(COD)2 unter oxidativer Kopplung der Komponenten zu verschiedenen Typen von Metallorganokomplexen. Der Verlauf dieser Reaktionen in Abhängigkeit von der Azomethin- und der Dienkomponente wird untersucht. Es wird gezeigt, daß sich die Reaktionen in Abhängigkeit von kinetischen und thermodynamischen Parametern steuern lassen und zu neuen Nickel(II)-organokomplexen führen, die mittels IR-, MS- und H-NMR-Messungen charakterisiert werden. Bei der Umsetzung von Zimtanil und Dienen mit Ni(COD) werden Zweikernkomplexe gebildet, in denen 2 C7N-Ketten die Zentralatome verknüpfen. Die Röntgenstrukturanalyse eines dieser Komplexe sichert den strukturellen Aufbau der Ketten.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814720118
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  • 8
    Electronic Resource
    Electronic Resource
    Metallchelate ungesättigter geminaler Dichalcogenoliganden mit gemischten S,Se-Ligatoren Kristall- und Molekülstruktur von Tetra-n-butylammonium-bis(1,1-dicyanoethylen-2,2-thioselenolato)nickelat(II), [(n-C4H9)4N]2[Ni(SSeC—C(CN)2)2] (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 477 (1981), S. 71-84 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metal Chelates of Unsaturated Geminal Dichalcogeno Ligands Containing S as well as Se Ligators. Crystal and Molecular Structure of Tetra-n-butylammonium-bis(1,1-dicyanoethylene-2,2-thioselenolato)nickelate(II), [(n-C4H9)4N]2[Ni(SSeC—C(CN)2)2]Synthesis and properties of chelates of the thioseleno ligands 1,1-dicyanoethylene-2,2-thioselenolate (bis-chelates with Ni2+, Pd2+, Pt2+, Cu2+, Au3+, Zn2+, Cd2+, Se2+, Te2+, UO22+; tris-chelate mit Cr3+, Fe3+, Co3+, Rh3+, In3+; 1:1-chelate mit Cu+, Au+), cyanthioselenocarbimate (bis-chelates with Ni2+, Pd2+) and 0-β-methoxyethyl-thioselenocarbonate (bis-chelates with Ni2+, Pd2+, Pt2+, Zn2+; tris-chelate mit Cr3+, Co3+, Rh3+) are reported. The X-ray crystal structure of [(n-C4H9)4N]2[Ni(SSeC—C(CN)2)2] shows a planar NiS2Se2 arrangement. From the space group P21/c (a = 14,043(1) Å, b = 8.704(1) Å, c = 20.647(2) Å, β = 108.56(1)°) and Z = 2 follows a trans position of the thioseleno ligands. The same magnitude of the C-S and C-Se distance refers to a hindrance of the equalization of the bonding in the chelate. The structure is compared with those of similar compounds.
    Notes: Synthese und Eigenschaften von Chelaten mit den Thioselenoliganden 1,1-Dicyanoethylen-2,2-thioselenolat (Bis-Chelate mit Ni2+, Pd2+, Pt2+, Cu2+, Au3+, Zn2+, Cd2+, Se2+, Te2+, UO22+; Tris-Chelate mit Cr3+, Fe3+, Co3+, Rh3+, In3+; 1:1-Chelate mit Cu+, Au+), Cyanthioselenocarbimat (Bis-Chelate mit Ni2+, Pd2+) und O-β-Methoxyethyl-thioselenocarbonat (Bis-Chelate mit Ni2+, Pd2+, Pt2+, Zn2+; Tris-Chelate mit Cr3+, Co3+, Rh3+) werden berichtet. Die Röntgenkristallstrukturanalyse der Verbindung [(n-C4H9)4N]2[Ni(SSeC—C(CN)2)2] zeigt eine planare NiS2Se2-Anordnung. Aus der Raumgruppe P21/c (a = 14,043(1) Å, b = 8,704(1) Å, c = 20,647(2) Å, β = 108,56(1)°) und Z = 2 folgt eine trans-Stellung der beiden Thioselenoliganden. Die gleiche Größe des C-S- und C-Se-Abstandes weist auf eine Behinderung des Bindungsausgleichs im Chelat hin. Die Struktur wird mit der ähnlicher Metallchelate verglichen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814770608
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  • 9
    Electronic Resource
    Electronic Resource
    Die Kristall- und Molekülstruktur von CuBr · (C2H5)4P2 (monokline Form) (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 422 (1976), S. 149-154 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal and Molecular Structure of CuBr · (C2H5)4P2 (Monoclinic Form)The crystal structure of the copper(I) complex CuBr · (C2H5)4P2 has been determined by X-ray structure analysis. The substance crystallizes monoclinic, space group C2h5-P21/n with a = 10.78, b = 15.74, c = 7.54 Å, β = 84.6° and 4 formula units in the unit cell. The structure was solved by conventional heavy atom methods and has been refined to a final R-value of 0.14. The structure is characterized by continous chains, the copper atoms are tetrahedrally coordinated and linked together by alternating double bridges of two bromine atoms and two biphosphine molecues, respectively.
    Notes: Die Kristallstruktur von Tetraäthylbiphosphin-Kupfer(I)-bromid, CuBr · (C2H5)4P2, wurde mit Hilfe einer Röntgenkristallstrukturanalyse bestimmt. Die Verbindung kristallisiert monoklin in der Raumgruppe C2h5-P21/n mit den Gitterkonstanten a = 10,78, b = 15,74, c = 7,54 Å, β = 84,6° und 4 Formeleinheiten pro Elementarzelle. Die Struktur wurde mit Hilfe der Schweratom-Methode gelöst und bis zu einem R-Wert von 0,14 verfeinert. Sie besteht aus unendlichen Ketten. Die Cu-Atome sind tetraedrisch koordiniert und über alternierende Doppelbrücken aus 2 Br-Atomen bzw. 2 Biphosphin-Molekülen verknüpft.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764220207
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  • 10
    Electronic Resource
    Electronic Resource
    Strukturuntersuchungen an Pseudochalkogen-Phosphor-Verbindungen. I. Kristall- und MolekülStruktur von Triphenylphosphonio-dicyanmethylid (1980)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 469 (1980), S. 179-187 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure Investigations on Pseudochalcogene Phosphorus Compounds. I. Crystal and Molecular Structure of Triphenylphosphonio DicyanomethylideThe title compound with the formula Ph3PC(CN)2 crystallizes in the monoclinic space group P21/c with cell parameters a = 948 pm, b = 1080 pm, c = 1756 pm, β = 104.5°. The structure has been solved by the heavy atom method. The refinement using anisotropic temperature factors for all non-hydrogen atoms yielded a final R value of 0.115. The molecular geometry including interatomic distances and bond angles is compared with literature data and discussed. The P—C bond lengths have been found to P—C(ylide) = 175.3 pm and P—C(phenyl) = 180.8 pm (average value).
    Notes: Die Verbindung Triphenylphosphonio-dicyanmethylid Ph3PC(CN)2 (1) kristallisiert in der monoklinen Raumgruppe P21/c, Gitterkonstanten: a = 948 pm, b = 1080 pm, c = 1756 pm, β = 104,5°. Die Struktur von 1 konnte nach der Schweratommethode gelöst und unter Verwendung anisotroper Temperaturparameter für die Nicht-Wasserstoffatome bis zu einem R-Wert von 0,115 verfeinert werden. Die Molekülgeometrie sowie die Bindungslängen und-winkel werden mit entsprechenden Literaturwerten verglichen und diskutiert. Für die Bindungslängen zwischen Phosphor und Kohlenstoff wurden die Werte P—C(Ylid) = 175,3 pm und P—C(Phenyl) = 180,8 pm (Mittelwert) gefunden.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19804690125
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