Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1975-1979  (26)
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 81 (1977), S. 343-349 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 80 (1976), S. 1516-1518 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 3441-3445 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sulfur Oxygen Compounds, 28X-Ray Structure Analysis of Ammonium Tetrasulfur Pentanitride Oxide, NH4[S4N5O]NH4[S4N5O] crystallizes in a monoclinic lattice of space group C2/m with 4 molecules in the unit cell. Both ions are of symmetry CS with average bond distances dNH = 1.01, dSN = 1.619, dSO = 1.433, and dSS = 2.632 Å. The structure of the anion can be derived from the S4N4 cage molecule by substituting one sulfur-sulfur bond by a S—N—S bridge with an additional terminal oxygen atom at one of the bridge head atoms.
    Notes: NH4[S4N5O] kristallisiert in einem monoklinen Gitter der Raumgruppe C2/m mit 4 Molekülen in der Elementarzelle und starken intermolekularen NHN- und NHO-Wasserstoffbrücken. Anionen und Kationen besitzen die Symmetrie Cs, die mittleren Kernabstände betragen dNH = 1.01, dSN = 1.619, dSO = 1.433, dSS = 2.632 Å. Die Struktur des Anions leitet sich vom Käfig des S4N4 durch Ersatz einer SS-Bindung durch eine S—N—S-Brücke ab, wobei eines der Brückenkopfatome zusätzlich ein Sauerstoffatom trägt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3553-3560 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sulfur Compounds, 47. Crystal and Molecular Structure of 1,3-Bis(4-chlorophenyl)trisulfane 2-Oxide, (p-ClC6H4)2S3O(p-ClC6H4)2S3O crystallizes in a molecular lattice of space group Cc with 4 molecules in the monoclinic unit cell without strong intermolecular interactions. The molecular symmetry is approximately Cs, the most important bond lengths are dSS=2.125, dSO=1.449, and dCS=1.780 Å. The central S3O unit resembles the thionyl chloride molecule but the two dihedral angles CSSS are unusually large (176.8°), which is rationalized by substituent interaction with the oxygen atom as well as by packing effects. In solution two conformational isomers exist as shown by vibrational spectra.
    Notes: (p-ClC6H4)2S3O kristallisiert in einem monoklinen Molekülgitter der Raumgruppe Cc mit 4 Molekülen in der Elementarzelle und ohne nennenswerte intermolekulare Wechselwirkungen. Die Molekülsymmetrie ist annähernd Cs, die wichtigsten Kernabstände sind: dSS=2.125, dSO=1.449 und dCS=1.780 Å. Die S3O-Gruppe besitzt eine ähnliche Geometrie wie Thionylchlorid, jedoch sind die Torsionswinkel CSSS mit 176.8° ungewöhnlich groß, was auf die Wechselwirkung des O-Atoms mit den Substituenten und auf Packungseffekte im Gitter zurückgeführt wird. IR- und Raman-Spektren zeigen, daß in Lösung zwei Konformationsisomere vorliegen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 423-429 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sulfur Oxygen Compounds, 29. Sulfane Oxides by Oxidation of Organic Trisulfanes and TetrasulfanesOrganic tri- and tetrasulfanes R2Sn (R = tBu, 2-C10H7, n = 3, 4) are oxidized by trifluoro peracetic acid yielding sulfane oxides, R2SnO (1-3) and R2SnO2 (4, 5) with oxygen atoms at the terminal atoms of the sulfur chains. Properties, infrared and mass spectra of 1-5 are reported. Decomposition at normal pressure yields sulfones but according to the mass spectra pyrolysis in a vacuum generates sulfane oxides of types RSnOH and RSnO2H (n = 1-4). The spectra of the trisulfane oxides (RS)2SO (R = tBu, 2-C10H7) which are isomers of 1 and 2, respectively, are reported for comparison.
    Notes: Durch Oxidation von Bisorganyl-tri- und -tetrasulfanen R2Sn (R = tBu, 2-C10H7, n = 3, 4) mit Trifluorperessigsäure werden die Sulfanoxide R2SnO (1-3) und R2SnO2 (4, 5) mit O-Atomen an den Enden der Schwefelkette dargestellt. Die thermischen Eigenschaften, Infrarot- und Massen-spektren werden mitgeteilt. 1-5 zersetzen sich bei Normaldruck zu Sulfonen; Pyrolyse im Vakuum ergibt den Massenspektren zufolge zum Teil monosubstituierte Sulfanoxide RSnOH und RSnO2H (n = 1-4). Die Spektren der mit 1 bzw. 2 isomeren Trisulfanoxide (RS)2SO (R = tBu. 2-C10H7) werden zum Vergleich mitgeteilt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 88 (1976), S. 854-855 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 457 (1979), S. 165-173 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Molecular Composition of the Sulfur from Acidified Sodium ThiosulfateThe decomposition of sodium thiosulfate in hydrochloric acid solution under special conditions yields a deep-yellow oil which is shown by infrared, Raman, and NMR spectroscopy as well as by molecular weight determinations to consist of the cyclic molecules S6, S7 and S8, whose concentrations decrease in that order, together with traces of sulfanes, H2Sn. These results support the reaction mechanism proposed by Davis which involves the intermediate formation of sulfane monosulfonic acids.
    Notes: Mittels NMR-, IR- und Raman-Spektren sowie Molmassebestimmungen wird gezeigt, daß der bei der Zersetzung von Natriumthiosulfat in salzsaurer Lösung unter speziellen Bedingungen entstehende Schwefel aus S6, S7 und S8 sowie Spuren von Sulfanen (H2Sn) besteht, wobei die relativen Konzentrationen der Schwefelringe in der angegebenen Reihenfolge abnehmen. Diese Ergebnisse stützen den von Davis vorgeschlagenen Reaktionsmechanismus, bei de m Sulfanmonosulfonsäuren als Zwischenprodukte angenommen werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 90 (1978), S. 54-55 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 90 (1978), S. 134-135 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: SS-Bindungen sind außergewöhnlich flexibel und haben Eigenschaften, die bei anderen homonuclearen Bindungen bisher nur vereinzelt beobachtet wurden: die Kernabstände variieren zwischen 1.8 und 3.0 Å, die Valenzwinkel zwischen 90 und 180°, die Diederwinkel zwischen 0 und 180°, und die Bindungsenergien reichen bis 430 kJ/mol. SS-Valenzschwingungen können im Bereich 177-820 cm-1 auftreten, und Kraftkonstanten von 1.4 bis 6.3 mdyn/Å wurden berechnet. Diese Vielfalt wird an Beispielen mit isolierten und kumulierten SS-Bindungen erläutert.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...