IR- und Raman-Spektren einiger Kaliumpentafluorometallate-monohydrate

The IR- and Raman Spectra of several compounds of the stoichiometryM ₂ ^I M ^IIIF₅H₂O and their deuterated analogs have been interpreted on the basis of their crystal structures. The compounds studied were divided into two classes regarding the bonding of water molecules. The main spectroscopic difference between the two classes was found in the region of H₂O vibrations in good agreement with theoretical predictions. The metal—fluorine and metal—oxygene vibrations gave no direct information concerning the two types of water.     

Infrarot- und ultraviolettspektroskopische Untersuchungen des Primycins

Ohne ZusammenfassungDem Gedächtnis an Prof. Dr.Ernst Späth ehrfurchtsvoll gewidmet.     

Die Infrarot- und RAMAN-Spektren der Alkalifluorosulfate

For the alkali fluorosulfates MSO₃F infrared spectra (M = Li, Na, K, Rb, Cs) and also RAMAN spectra (M = K, Rb, Cs) have been recorded. The results are discussed to get some information about the lattice structures. The C₃ axis of the anion has several possibilities of orientation in the unit cell for the salts with heavy cations.     

Die Analyse von Butadienpolymeren mit Infrarot- und Kernresonanzspektrometrie

Ohne Zusammenfassung     

Spektroskopische Untersuchungen an Schwefelverbindungen. IV. Darstellung,Infrarot- und Raman-Spektren von Derivaten des CH3SO2NH2 und (CH3SO2)2NH

The compounds I—XIV (see above) were prepared, in part for the first time, and investigated by infrared and Raman spectroscopy. The group vibrations of the CH₃SO₂N fragment occur in remarkably narrow regions which facilitate the rather complete assignment of the observed frequencies.     

Die Raman-Spektren von ZnTiO3 und CdTiO3

Raman Spectra of ZnTiO₃ and CdTiO₃ The laser Raman spectra of ZnTiO₃ and CdTiO₃ are recorded and discussed with the aid of a factor group analysis and in comparison with formerly reported IR data. The results allow a better insight into the vibrational behaviour of double oxides with ilmenite structure.     

Darstellung und Eigenschaften einiger Monoarylthalliumbis-dithiocarbamate und -xanthogenate

Synthesis and Properties of Some Monoarylthalliumbisdithiocarbamates and -xanthates The synthesis and properties of some compounds of the general formula R? T and are described. Crystalline substances were obtained, which can be characterized excellently by NMR spectroscopy. Reactions and NMR data are discussed.     

Thermolyse und photolyse einiger sila- und disilacyclobutane

The thermolysis of some 1,1-di- or 1,1,2-tri-substituted 1-silacyclobutanes leads to 1,3-disilacyclobutanes or to polymeric products. A possible intermediate silaalkene could not be stabilized, even in the presence of bulky substituents at the silicon atom. Photolysis of some di- or tri-substituted silacyclobutanes in methanol results in ring opening or in elimination of an alkene with further reaction of the intermediates with the solvent. Photolysis of the 1,1-diphenyl-2-methyl-l-silacyclobutane in cyclohexane leads to the 1,1,3,3-tetraphenyl-l,3-disilacyclobutane. The influence of the substituents at the silicon or the carbon atom on the reaction pathways is discussed. Photolysis of the 1,1,3,3-tetramethyl-2,4-diphenyl-l,3-disilacyclobutane occurs with ring opening and addition of methanol, whereas the 1,1,3,3-tetraphenyl-l,3-disilacyclobutane does not show any reaction.     

Synthese und Konformation einiger Tetraoxaspirane

Summary The synthesis of three new constitutionally symmetrical tetraoxaspirans with two oxygen atoms in the 7-membered ring is described. The structure of the compounds was determined by chemical and spectral evidence. Some aspects of the conformation of the compounds were studied using UV/VIS. Hypochromism was observed in the case of3.

     

Struktur und circular-dichroismus einiger steroidoxime

The correlation between the syn-anti geometry and circular dichroism of several O-benzyl or O-isopropyl substituted steroidoximes 1–22 was investigated. A simple sector rule was found for the longest wavelength CD band of the unsaturated oximes 1–13. The correlations are not so clear for the unsaturated derivatives 14–22.     

Darstellung und Reaktionen einiger Diphenylwismutalkoxide

Synthesis and Reactions of Some Diphenylbismuth Alkoxides The synthesis and some properties of compounds of the general formula (C₆H₅)₂BiOR are described. Nucleophilic displacement of the aloxy groups is readily achieved by reactions with thiols. Thus sulphur containing organobismuthines of the general formula (C₆H₅)₂BiSR are formed in nearly quantitative yield.     

Darstellung und Eigenschaften einiger Hexamethylcyclohexasilanderivate

Starting from hexamethylhexaphenylcyclohexasilane, some new hexamethyl-cyclohexasilane derivatives (Cl, Br, OCH₃, F) were prepared by exchange of the phenyl groups and characterized by analytical and spectroscopic methods.

Herrn Prof. Dr. mult.Victor Gutmann zum 65. Geburtstag gewidmet.     

Eigenschaften und Zustandsdiagramme einiger silberchalkogenidsysteme

Zusammenfassung Auf Grund einer von uns durchgeführten Untersuchung über die Zustandsdiagramme der Silberchalkogenidsysteme Ag₂Te-Ag₂Se, Ag₂Te-Ag₂S, Ag₂Se-Ag₂S und über die Diagonalquerschnitte Ag₂Se_0.5Te_0.5-Ag₂S, Ag₂S_0.5Te_0.5-Ag₂Se, Ag₂Se_0.5S_0.5-Ag₂Te wurden ein Projektion des Raumdiagramms der Liquidusflachen und einige der wichtigsten isothermen Schnitte des dreidimensionalen Systems Ag₂Te-Ag₂Se-Ag₂S aufgestellt. Nach der Interpretation der Art und Lage der einzelnen Phasen wurden für jedes der Systeme die elektrischen und wärmephysikalischen Eigenschaften bei Temperaturen von der des flüssigen Stickstoffes bis zu den Temperatures des Phasenübergangs untersucht und der thermoelektrische Wirkungsgrad (Z, K^–1) berechnet.

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On the basis of a previous investigation on the phase diagrams of the silverchalcogenide systems Ag₂Te-Ag₂Se, Ag₂Te-Ag₂S and Ag₂Se-Ag₂S and the diagonal sections Ag₂Se_0.5Te_0.5-Ag₂S, Ag₂S_0.5Te_0.5-Ag₂Se and Ag₂Se_0.5S_0.5-Ag₂Te, the projections of liquidus surfaces and more characteristic isothermal sections of the Ag₂Te-Ag₂Se-Ag₂S phase diagram were constructed. After interpretation of the types and situations of the separate phases in each of the systems studied, their electric and thermophysical properties were investigated in the temperature range from 77 K up to the temperatures of the phase transitions and the values of thermoelectric efficiency were calculated,Z, Ksu–1.

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Ag₂Te-Ag₂Se, Ag₂Te-Ag₂S, Ag₂Se-Ag₂S Ag₂Se_0.50.5-Ag₂S, Ag₂S_0.5Te_0.5-Ag₂Se, Ag₂Se_0.5S_0.5-Ag₂Te Ag₂Te-Ag₂Se-Ag₂S. . 77 . .

     

Darstellung und Reaktionen einiger Methylwismutalkoxide

Synthesis and Reactions of Some Methylbismuth Alkoxides The synthesis and some properties of compounds of the general formula CH₃Bi(OR)₂ are described. Displacement of the alkoxy groups is readily achieved by reaction with thiols. Thus sulfar containing organobisumthines of the general formula CH₃Bi(OR)₂ are formed in good yield. Insertion of CS₂ into the very reactive Bi? O bond takes to form the corresponding methylbismuth xanthates.     

Synthese und Eigenschaften einiger Iodtrisilane

The syntheses and properties of the iodotrisilanes (IH₂Si)₂SiH₂, (IH₂Si)₂SiHI, I₃SiSiI₂SiH₃, (I₃Si)₂SiH₂ and Si₃I₈ are reported. All trisilanes were synthesized from the appropriate phenyltrisilanes and hydrogen iodide, with the exception of I₅Si₃H₃, which was prepared by thermolysis of I₃SiSiH₃. The ²⁹ Si-chemical shifts and ²⁹Si²⁹Si-coupling constants are reported. ab]Die Synthesen und Eigenschaften der Iodtrisilane (IH₂Si)₂SiH₂, (IH₂Si)₂SiHI, I₃SiSiI₂SiH₃, (I₃Si)₂SiH₂ und Si₃I₈ werden beschrieben. Bis auf I₅Si₃H₃, das während der Thermolyse von I₃SiSiH₃, entstand, wurden alle Iodtrisilane aus den entsprechenden Phenyltrisilanen mit Iodwasserstoff hergestellt. Die ²⁹Si-Verschiebungen und ²⁹Si²⁹Si-Kopplungskonstanten werden mitgeteilt.     

Konstitution und Indikatoreigenschaften einiger Azofarbstoffe

Ohne ZusammenfassungDr. Zoltán Somogyi starb infolge einer schweren Verletzung am 14. Februar 1945 in Budapest.Gewidmet aus Anlaß des 100jährigen Bestehens des Laboratoriums Fresenius.     

Synthese und Eigenschaften einiger Phenoxyarylsilane

Ohne Zusammenfassung     

Die Papierchromatographie und Papierelektrophorese einiger anorganischer und Phenyl-Arsenverbindungen

Ohne Zusammenfassung