Karl-Christian Buschbeck – författare

Alloys of Uranium with Alkali Metals, Alkaline Earths, and Elements of Main Groups III and IV. The description of uranium and its compounds, for which the Gmelin Institute has started a series of volumes supplementing the main volume of 1936, follows in its arrangement closely the order chosen for the transuranium volumes. Part A treats "The Element", Part B "The Metal and its Alloys", Part C "The Compounds", Part D "The Chemistry in Solution", and finally Part E "The Coordination Compounds". Part E, "The Coordination Compounds" comprises two volumes which already have been finished and are available - completely written in English. Series A comprises 7 volumes which are all available. Series C will comprise 14 volumes of which only volume 6 is missing. Series D consists of 4 volumes dealing with the chemistry in solution, which already have been finished and are available. The present volume describes the alloys and the intermetallic compounds with the metals of main groups I to IV - those systems with semimetals such as boron and germanium are to be found in corresponding volumes in Uranium C series. In the volume B 2 main emphasis is given to the binary systems. The most frequently investigated systems are uranium-beryllium and uranium-aluminium because of their special scientific (U-Be) and technological (U-Al) importance.

The description of uranium and its compounds, for which the Gmelin Institute has started a series of volumes supplementing the main volume of 1936, follows in its arrangement closely the order chosen for the transuranium volumes.

The 3rd supplement continues the updating of the original 20 volumes on boron compounds published between 1974 and 1979. The first supplement consisting of 3 volumes covered all the literature uniformly up to the end of 1977, whereas the two volumes of the 2nd supplement have extended the literature coverage of boron compounds to 1980 and the four volumes of the 3rd supplement to 1984. The present volume continues the description of boron compounds with halogens, presenting those with chlorine, bromine and iodine. The compounds with chalcogens are completed here along with those of boron with S, Se, Te and Po. The final chapter on carboranes contains the carboranes themselves, together with metallacarboranes, and in the last section a description of carborane-containing polymers, mostly derived from the three isomeric dicarbadodecarboranes. Volume 4 of the 3rd supplement brings this supplement series to an end. It will be supplemented by a separately appearing index volume, which contains all the boron compounds dealt with in volumes 1 - 4 of this supplement series.

The first supplement consisting of 3 volumes covered all the literature uniformly up to the end of 1977, whereas the two volumes of the 2nd supplement have extended the literature coverage of boron compounds to 1980 and the four volumes of the 3rd supplement to 1984.

The 3rd supplement continues the updating of the original 20 volumes on boron com­ pounds published between 1974 and 1979. The first supplement to this series brought the literature closing date uniformly to the end of 1977, whereas the two volumes of the 2nd supplement have extended the literature coverage of boron compounds to 1980. Selection and presentation of data parallel the style selected for the two previous supplement volumes, which appeared in 1980/1 and 1982/3, respectively. The Gmelin Principle of the Last Position is largely adhered to, excepting substituted polyboron species containing boron-boron bonds (all of which are found in Chapter 2 within the system boron-hydrogen). Examples of organic derivatives are included, especially in those cases where the carbon-free species are not known; and the carboranes are treated comprehensively. The literature is considered through 1984. Part 1 of the present 3rd supplement contains the systems boron-noble gases and boron­ hydrogen; Part 2 contains the system boron-oxygen. Part 3 will contain the systems boron­ nitrogen, boron-fluorine, and boron-chlorine; the remaining systems and a formula indexwill be included in the final 4th part of this supplement. The first chapter of the present volume on the compounds of boron and oxygen provides sections on the binary boron oxides, including some radicals, and the anhydrous berate ions. The following chapter describes boron-oxygen compounds with hydrogen or organyl groups.

Der vorliegende Band A 3 der System-Nr. 61 ,.Silber" setzt die Behandlung des Elements mit den Kapiteln 1 Chemisches Verhalten des Metalls 2 Chemisches Verhalten des Ions 3 Nachweis und Bestimmung 4 Toxicität 5 Kolloides Silber A2 die Kapitel Geschichtliches, Kosmochemie, Geochemie, Mineralien, fort, nachdem in Silber A 1 und Lagerstätten, Technologie und Darstellung des Silbers, Silberisotope, Atom und Molekeln sowie Physikalische Eigenschaften des Metalls behandelt worden waren. Das beim Silber recht umfang­ reiche Kapitel ,.Elektrochemie" soll den abschließenden Band Silber A 4 bilden. Die Verbindungen des Silbers werden in den Lieferungen von Silber B behandelt, während für die Legierungen der Band Silber C vorgesehen ist. Im chemischen Verhalten des metallischen Silbers spielen die Verzunderungs-und Anlaufvorgänge bei der Einwirkung von 0 und H S sowie auch der Halogene, vor allem des Jods, eine besondere 2 2 Rolle. Begünstigt sind diese Reaktionen durch die hohe Beweglichkeit des Ag-Ions im Ag-Gitter. 1 11 Das Chemische Verhalten des Silber-Ions (Ag und Ag ), vorzugsweise in wäßriger Lösung, enthält neben den Reaktionen mit Halogenid-Ionen die Behandlung einer ganzen Anzahl durch Ag+ kata­ lytisch beeinflußter Reaktionen, die vor allem hinsichtlich ihrer Kinetik untersucht wurden. Hierzu 1 gehören die Aktivierung von H durch Ag-Ion sowie Oxydationsreaktionen, bei denen intermediär Ag'' als eigentlicher Träger der Oxydation gebildet wird.