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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 18 (1995), S. 259-262 
    ISSN: 0935-6304
    Keywords: Enantioselective GC ; Permethylated α- and β-cyclodextrin stationary phases ; Flumecinol (3-trifluoromethyl-α-ethylbenzhydrol) ; α-Ethylbenzhydrol derivatives ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Flumecinol and related compounds can, without derivatization, be separated into their enantiomers by gas chromatography on cyclodextrin phases; permethylated β-cyclodextrin dissolved in OV-1701 can be particularly recommended. Thermodynamic data describing the different intensities of interaction of the individual enantiomers with the stationary phases were determined. The values measured imply different separation mechanisms for the compounds investigated.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 327 (1987), S. 251-265 
    ISSN: 1434-601X
    Keywords: 21.10−k ; 21.10.Hw ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High spin states of126Ba have been populated via the116Sn (13C, 3n) reaction and were investigated by inbeam gamma-ray spectroscopy. Partially NaJ (Tl)-BGO anti-compton shields were used. Two positive parity band crossings were established. The yrast band was observed up to a tentative 18+ level. The gamma-bands and two band structures of negative parity were found. In addition a tentative 3− state has been seen. Two-quasiparticle Routhians are constructed from the one-quasiparticle Routhians of the bands in the odd neighbouring isotopes and isotones and are compared to the ones observed in126Ba. This leads to ah 11/2 g 7/2-neutron structure of the strongly coupled negative parity bands and a two-quasiproton structure of the decoupled bands of negative parity. The branching and mixing ratios for the neutron bands are analyzed.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Redetermination of the Crystal and Molecular Structure of Heptasulfur Imide, S7NHThe following data were obtained from a single crystal x-ray structure analysis of S7NH carried out at -160°C and leading to a R value of 0.026: space group Pbnm, lattice dimensions a = 7.607, b = 7,823, c = 13.091 Å, Z = 4, density 2.04 g · cm-3. The molecules consist of puckered rings of site symmetry Cs with average bond distances dSS = 2.053, dSN = 1,676, dNH = 0,91 Å. The coordination of the nitrogen is almost planar which ist rationalized in terms of a 3-center, π-bond. There are indications for weak intermolecular S…H hydrogen bonds.
    Notes: Eine bei -160°C ausgeführte und bis zum R-Wert von 2,6% verfeinerte Röntgenstrukturanalyse von Heptaschwefelimid ergab folgende Kristalldaten: Raumgruppe Pbnm, Gitterkonstanten a = 7,607, b = 7,823, c = 13,091 Å, Z = 4, Dichte 2,04 g · cm-3. Die kronenförmigen S7NH-Moleküle besitzen die Lagesymmetrie Cs; die mittleren Kernabstände sind dSS = 2,053, dSN = 1,676, dNH = 0,91 Å. Das Stickstoffatom ist nahezu planar koordiniert, was mit einer Dreizentren-π-Bindung erklärt wird. Die Struktur enthält keine N…H-, wohl aber schwache intermolekulare S…H-Wasserstoffbrücken.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 334 (1992), S. 41-48 
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Gas Chromatographic Investigation of Stereoisomeric Cyclotrideca-1,5,9-trienesUsing achiral phases of different polarity in capillary gas chromatography on the one hand and a chiral cyclodextrine phase on the other hand it is demonstrated, that a ring-enlargement sequence starting from (E, E, Z)-cyclododeca-1,5,9-triene yields five of the six theoretically possible isomeric cyclotrideca-1,5,9-trienes and (E, Z)-trans-bicyclo[10.1.0]trideca- 4,8-diene. With all achiral phases only three of the isomeric trienes and the bicyclic isomer were separated from each other; (E, Z, E)- and (Z, E, Z)-cyclotrideca-1,5,9-triene are eluated in only one (the fifth) peak, these isomers were separated on the cyclodextrine phase. Moreover, this chiral phase separates the enantiomers of the bicyclic isomer.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 25 (1987), S. 1092-1092 
    ISSN: 0749-1581
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0749-1581
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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