In geringer Konzentration findet man Scandium in einigen hundert Mineralen. Es ist daher auch in Erzkonzentraten, z. B. russischen und chinesischen Wolframit- und Tantalitkonzentraten, enthalten. Auch bei der Aufbereitung uranhaltiger Erze fallen Scandiumverbindungen an. Scandiummetall wird nach vorheriger Reinigung und Aufkonzentration durch Umsetzung zum Fluorid und dessen Reduktion mit Calcium erzeugt.
Six bacterial strains able to degrade aerobically 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC) were isolated. The bacteria used PBTC as sole source of phosphorus in the presence of an alternative source of carbon. The microorganisms were taken from various ecosystems, e.g. river water, river sediment and activated sludge. PBTC up to a concentration of 1 mM (270 mg/l) was completely degraded by a defined mixed culture.
Paramagnetic complexes also can be studied by 2D-NMR spectroscopy. The interpretation of the spectra is decisively facilitated by this technique. The title compound 1 is the first transition-metal complex containing a thiophosphinic acid amido ligand.
Chemischer InformationsdienstVolume 16, Issue 28 Physical Organic Chemistry ChemInform Abstract: FIRST APPLICATION OF THE 2D NMR TECHNIQUE IN SPECTRAL ANALYSIS OF A PARAMAGNETIC COMPLEX, FOR EXAMPLE: BIS(R-(+)-P,P-DIETHYLTHIOPHOSPHINIC ACID-N-α-METHYLBENZYLAMIDO)NICKEL(II) W. PETERS, W. PETERSSearch for more papers by this authorM. FUCHS, M. FUCHSSearch for more papers by this authorH. SICIUS, H. SICIUSSearch for more papers by this authorW. KUCHEN, W. KUCHENSearch for more papers by this author W. PETERS, W. PETERSSearch for more papers by this authorM. FUCHS, M. FUCHSSearch for more papers by this authorH. SICIUS, H. SICIUSSearch for more papers by this authorW. KUCHEN, W. KUCHENSearch for more papers by this author First published: July 16, 1985 https://doi.org/10.1002/chin.198528055AboutPDF 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. Volume16, Issue28July 16, 1985 RelatedInformation
Auch paramagnetische Komplexe können 2D-NMR-spektroskopisch untersucht werden. Die Interpretation der Spektren wird durch diese Technik entscheidend erleichtert. Die Titelverbindung 1 ist der erste Übergangsmetallkomplex mit einem Thiophosphinsäureamidoliganden.