The features of a combustion with elementary fluorine for the case of compact SiC ceramics and model substances for boron containing ceramics (H3BO3 and Na2B4O7) were investigated with the aim of their decomposition and analysis. On-line detection of the gaseous decomposition products by quadrupole mass spectrometry using electron impact ionisation was studied. Limitations by blanks and transport interferences were investigated. Standard addition as well as the isotope dilution technique were used for calibration in the case of B, C and W at the trace and major component level.

Infrared spectra in the gaseous phase have been recorded for the first time for urea and the isotopomers urea-D4, urea-15N2 and urea-13C. On the base of these data a normal coordinate calculation has been performed, resulting in an optimized force field of urea, showing that, due to the very small intermolecular forces, the internal force constants increase by evaporation. This is especially true for the C=O-bond with a force constant increased by 10%.

Elemental gold reacts with UF6 in the presence of CO in anhydrous HF to form quantitatively a complex compound, whose IR spectra and analysis are consistent with the formula [Au(CO)2][UF6].

Dicarbonylgold(I) Hexafluorouranate(VI), Au(CO)2UF6Elemental gold reacts with UF6 in the presence of CO in anhydrous HF to form quantitatively a complex compound, whose IR spectra and analysis are consistent with the formula [Au(CO)2][UF6].

AbstractCrF5 is shown to be the highest chromium fluoride always obtained during combustion of chromium with fluorine under various conditions.

Spectroscopic Studies of Higher Chromium Fluorides. Controversy over the Existence of Chromium Hexafluoride, CrP6Combustion of chromium with fluorine under various conditions led always to CrF5 as the highest chromium fluoride. The properties of pure CrF5 have been reinvestigated and IR, UV spectra of the gas‐phase molecule, and also the vapor pressure have been measured for the first time. Furthermore, it has been shown that the IR spectrum of matrix‐isolated CrF5 is identical to the IR spectrum of CrF6 quoted in the literature. It appears, that in principle the existence of CrF6 is doubtful.

AbstractDie IR‐ und Ramanspektren der monomeren Hexamethoxide des Wolframs und Molybdäns sowie des ionischen [Me4Sb]+[Sb(OMe)6]− (dargestellt aus [Sb(OMe)5]2 und Me4SbOMe; Me = CH3) werden aufgenommen und der Punktgruppe C3i zugeordnet. Kraftkonstantenrechnungen für W(OMe)6 und für [Sb(OMe)6]− ergeben praktisch identische WO‐ und SbO‐Valenzkraftkonstanten (2,56 N/cm), dagegen sind die übrigen Kraftkonstanten signifikant verschieden.

Angewandte ChemieVolume 92, Issue 3 p. 226-227 Zuschrift Direkte Photolyse von Uranhexafluorid als präparativ nutzbare endotherme Reaktion† Frank S. Becker Dipl.-Phys., Frank S. Becker Dipl.-Phys. Projektgruppe für Laserforschung der Max-Planck-Gesellschaft D-8046 GarchingSearch for more papers by this authorDr. Eberhard Jacob, Dr. Eberhard Jacob Abteilung Physikalische Chemie, M.A.N. — Neue Technologie Postfach 5006 20, D-8000 München 50Search for more papers by this author Frank S. Becker Dipl.-Phys., Frank S. Becker Dipl.-Phys. Projektgruppe für Laserforschung der Max-Planck-Gesellschaft D-8046 GarchingSearch for more papers by this authorDr. Eberhard Jacob, Dr. Eberhard Jacob Abteilung Physikalische Chemie, M.A.N. — Neue Technologie Postfach 5006 20, D-8000 München 50Search for more papers by this author First published: März 1980 https://doi.org/10.1002/ange.19800920335Citations: 5 † 3. Mitteilung über Chemie der Uranfluoride und -oxidfluoride. Wir danken Prof. K. L. Kompa, Garching, und Prof. F. Seel, Saarbrücken, für Diskussionsbeiträge. — 2. Mitteilung: E. Jacob, Z. Anorg. Allg. Chem. 400, 45 (1973). AboutPDF ToolsRequest permissionAdd to favorites ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Für die Laserisotopentrennung beim Uran erscheint die UF6-Photodissoziation als besonders aussichtsreich. In einer neuen Apparatur gelang die direkte Spaltung von (50 g) UF6 mit UV-Licht in UF5 und hochreines Fluor fast quantitativ (39 h). Prinzipiell sollte es daher möglich sein, bei der Laserisotopentrennung ohne Fänger („Scavenger”︁) auszukommen und Fluor im Kernbrennstoff-Kreislauf zurückzugewinnen. Citing Literature Volume92, Issue3März 1980Pages 226-227 This is the German version of Angewandte Chemie. Note for articles published since 1962: Do not cite this version alone. Take me to the International Edition version with citable page numbers, DOI, and citation export. We apologize for the inconvenience. RelatedInformation

Laser isotopic separation of uranium could profit from UF6 photodissociation. Direct cleavage of UF6 (50 g) by UV light into UF5 and highly pure fluorine was achieved almost quantitatively (39 h) in a new apparatus. It should be possible in principle to accomplish laser isotope separation without scavengers and to recover fluorine in the nuclear fuel cycle.

Chemischer InformationsdienstVolume 8, Issue 39 Preparative Inorganic Chemistry ChemInform Abstract: LOW-TEMPERATURE COCONDENSATION OF FLUORINE COMPOUNDS. 3. DIFLUOROOXOBROMINE(V) ION, BROF2+ M. ADELHELM, M. ADELHELMSearch for more papers by this authorE. JACOB, E. JACOBSearch for more papers by this author M. ADELHELM, M. ADELHELMSearch for more papers by this authorE. JACOB, E. JACOBSearch for more papers by this author First published: September 27, 1977 https://doi.org/10.1002/chin.197739023AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume8, Issue39September 27, 1977 RelatedInformation

A simple method for the purification of fluorine gas is described. With the exception of nitrogen and argon, all impurities usually present in commercial fluorine can be readily removed by 1) conversion of O2 to non-volatile O+2 salts, and 2) a 70 to 63°K trap-to-trap distillation.

Das erste Fluorokation eines Übergangsmetalls , nämlich [ReF 6 ] + , wurde aus ReF 7 und SbF 5 bei 250°C in Form des Salzes (1) oder durch Hochdruckfluorierung eines stöchiometrischen Rhenium‐Antimon‐Gemisches bei 400°C und anschließendes Tempern bei 200°C in Form des Salzes (2) gewonnen. magnified image

Angewandte Chemie International Edition in EnglishVolume 15, Issue 3 p. 158-159 Communication Xenon Oxide Difluoride, XeOF2†‡ Dr. Eberhard Jacob, Dr. Eberhard Jacob Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany) Abteilung für Anorganische Chemie der Universität, Oberer Eselsberg O 26, 7900 Ulm (Germany)Search for more papers by this authorDipl.-Chem. Robert Opferkuch, Corresponding Author Dipl.-Chem. Robert Opferkuch Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany) Abteilung für Anorganische Chemie der Universität, Oberer Eselsberg O 26, 7900 Ulm (Germany)Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany)Search for more papers by this author Dr. Eberhard Jacob, Dr. Eberhard Jacob Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany) Abteilung für Anorganische Chemie der Universität, Oberer Eselsberg O 26, 7900 Ulm (Germany)Search for more papers by this authorDipl.-Chem. Robert Opferkuch, Corresponding Author Dipl.-Chem. Robert Opferkuch Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany) Abteilung für Anorganische Chemie der Universität, Oberer Eselsberg O 26, 7900 Ulm (Germany)Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany)Search for more papers by this author First published: March 1976 https://doi.org/10.1002/anie.197601582Citations: 6 † Low-temperature co-condensation of fluorine compounds, Part 2.—Part 1:ref.[1]. ‡ Dedicated to Professor Josef Goubeau on the occasion of his 75th birthday AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article.Citing Literature Volume15, Issue3March 1976Pages 158-159 RelatedInformation

Xenonoxiddifluorid (1) , das bisher nur spektroskopisch nachgewiesen worden war, konnte jetzt als hellgelber, bis −25°C stabiler Festkörper isoliert werden: Ein festes Mischkondensat aus XeF 4 und Wasser setzt sich zwischen −80 und −50°C zu (1) um. magnified image

AbstractDie Darstellung von Xe0F2 gelingt durch Umsetzung eines festen Mischkondensats von XeF4 und H2O (Molverhältnis l : 1,1) zwischen ‐80 und ‐50°C. Der bei dieser Hydrolyse freiwerdende HF wird zur Vermeidung von Nebenreaktionen kontinuierlich abgepumpt.

Angewandte Chemie International Edition in EnglishVolume 15, Issue 3 p. 159-160 Communication Hexafluororhenium(VII), [ReF6]+† Dr. Eberhard Jacob, Dr. Eberhard Jacob Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany) Abteilung für Anorganische Chemie der Universität, Oberer Eselsberg O 26, 7900 Ulm (Germany)Search for more papers by this authorManfred Fähnle, Corresponding Author Manfred Fähnle Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany) Abteilung für Anorganische Chemie der Universität, Oberer Eselsberg O 26, 7900 Ulm (Germany)Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany)Search for more papers by this author Dr. Eberhard Jacob, Dr. Eberhard Jacob Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany) Abteilung für Anorganische Chemie der Universität, Oberer Eselsberg O 26, 7900 Ulm (Germany)Search for more papers by this authorManfred Fähnle, Corresponding Author Manfred Fähnle Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany) Abteilung für Anorganische Chemie der Universität, Oberer Eselsberg O 26, 7900 Ulm (Germany)Institut für Kernverfahrenstechnik des Kernforschungszentrums, Postfach 3640, 7500 Karlsruhe 1 (Germany)Search for more papers by this author First published: March 1976 https://doi.org/10.1002/anie.197601591Citations: 9 † Dedicated to Professor Josef Goubeau on the occasion of his 75th birthday AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article.Citing Literature Volume15, Issue3March 1976Pages 159-160 RelatedInformation