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  • 1970-1974  (7)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 2089-2094 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal and Molecular Structure of triptych-Boroxazolidine (Triethanolamine Borate)The crystal structure of triptych-boroxazolidine, C6H12BNO3, has been determined by X-ray diffraction. The intensity data were collected by a Pailred diffractometer and the structure was solved by direct methods. The molecule has threefold symmetry along the intermolecular B—N bond with the length 1.677 ± 0.006 Å.
    Notes: Die Struktur von triptych-Boroxazolidin, C6H12BNO3, wurde röntgenographisch mit Hilfe direkter Methoden bestimmt. Das Molekül besitzt eine dreizählige Symmetrieachse entlang einer innermolekularen B—N-Bindung mit der Länge 1.677 ± 0.006 Å.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 3761-3764 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal Structure of 1,2 Dichlor-1-cyclobutene-dione (Squaric Acid Dichloride)The crystal structure of the title compound, C4Cl2O2, has been determined by X-ray diffraction. The innermolecular distances are considerably influenced by electron delocalization.
    Notes: Die Kristallstruktur von 1,2-Dichlor-1-cyclobuten-dion, C4Cl2O2 wurde röntgenographisch bestimmt. Die innermolekularen Abstände weisen auf eine erhebliche Elektronendelokalisation im planaren Molekül hin.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 1139-1144 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal Structure of Diphenylphosphinic AcidDiphenylphosphinic acid, C12H11O2P, crystallizes in the monoclinic space group P21/c with four molecules in the unit cell. a = 11.441(4) Å, b = 6.059(3) Å, c = 15.722(7) Å, β = 99.93(3)°. The molecules are linked to chains by hydrogen bonds along the twofold screw axis. The O…H—O distance is 2.468(8) Å; the P—O distances are 1.486(6) Å and 1.526(6) Å.
    Notes: Diphenylphosphinsäure, Cl2H11O2P, kristallisiert mit 4 Formeleinheiten pro Elementarzelle in der Raumgruppe P21/c. a = 11.441(4) Å, b = 6.059(3) Å, c = 15.722(7) Å, β = 99.93(3)°. Die einzelnen Moleküle sind in Richtung der zweizähligen Schraubenachsen durch Wasserstoffbrückenbindungen der Länge 2.468(8) Å, zu Ketten verknüpft. Die Bindungsabstände d(P=O) bzw. d(P—OH) betragen 1.486(6) bzw. 1.526(6) Å.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 86 (1974), S. 598-599 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 13 (1974), S. 600-601 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 382 (1971), S. 163-176 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The infrared and RAMAN spectra of Cr3O102-, CrO4O132- and CrO3 have been measured and assigned. The force constant of a modified valence force field have been calculated and compared with the force constants of CrO42-, Cr2O72-, CrO3F-, CrO3Cl-, CrO2F2 and CrO2Cl2. The valence force constant fCrO depends almost linearly on the distance d(CrO). The bending frequency δ(CrOCr) has to be reassigned.The unit cell parameters of α- and β-Cs2Cr3O10 and Cs2Cr4O13 have been determined by means of Guinier X-ray powder techniques.
    Notes: Die Infrarot- und RAMAN-Spektren der Alkalisalze von Cr3O102- und Cr4O132-, sowie von CrO3 wurden registriert und zugeordnet. Die Kraftkonstanten eines modifizierten Valenzkraftfeldes wurden berechnet und mit den Kraftkonstanten in CrO42-, Cr2O72-, CrO3F-, CrO3Cl-, CrO2F2 und CrO2Cl2 verglichen. Zwischen der Größe der Valenzkraftkonstante fCrO und dem Abstand d(CrO) besteht ein fast linearer Zusammenhang. Die Deformationsschwingung λ(CrOCr) in Cr2O72- wird neu zugeordnet. Das spektroskopische Verhalten von CrO-Brückenbindungen wird diskutiert.Von α- und β-Cs2Cr3O10 sowie Cs2Cr4O13 wurden die Elementarzellenparameter mit Hilfe von Röntgenpulveraufnahmen nach Guinier ermittelt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 385 (1971), S. 230-242 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The RAMAN and infrared spectra of the anions Nb6O819, Ta6O8-19, Mo6O2-19 and W6O2-19 have been recorded. A normal coordinate analysis has been performed in order to assign unequivocally the observed bands and to obtain force constants. The ratio of the force constants of the terminal, bridging and central metal-oxygen bonds is close to 8:4:1.
    Notes: Die RAMAN- und Infrarotspektren der Anionen Nb6O8-19 und Ta6O8-19, sowie Mo6O2-19 und W6O2-19 wurden registriert. Eine Normalkoordinatenanalyse ermöglichte die eindeutige Zuordnung der Metall - Sauerstoff-Valenz- und Deformationsschwingungen sowie die Berechnung von Kraftkonstanten. Die Valenzkraftkonstanten der endständigen, verbrückenden und zentralen Metall - Sauerstoff-Bindungen verhalten sich ungefähr wie 8:4:1.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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