Absolute configuration of crotsparine,crotsparinine and sparsiflorine

Absolute configurations of crotsparine, crotsparinine and sparsiflorine have been determined.     

An ab initio study of ground state, electronic and thermodynamical properties of GaP and Ga2P

In the present paper, we report an ab initio calculation of the ground state, electronic and thermodynamical properties like constant volume lattice specific heat, vibrational energy, internal energy, and entropy for GaP and Ga₂P is presented. These properties are obtained after calculating the phonon spectrum over the entire Brillouin zone. The calculations were performed using the ABINIT program package, which is based on density functional theory (DFT) method and the use of pseudopotentials and plane wave expansion. Difference in the ground state properties such as electronic structure and thermodynamical properties are discussed. The thermodynamical properties follow the expected trend. There is a good agreement between present theoretical and limited available experimental data in the case of ground state such as lattice constant and bulk modulus and electronic properties. With the increase of Ga atoms in the unit cell the semiconducting nature of Ga₂P turns to metallic. There is a noticeable difference in the thermodynamical properties in the case of both gallium compounds.     

Bromodimethylsulfonium bromide (BDMS): a useful reagent for conversion of aldoximes and primary amides to nitriles

An operationally simple and high yielding procedure has been developed for the preparation of nitriles from aldoximes and primary amides using bromodimethylsulfonium bromide (BDMS) as a novel and efficient reagent in the absence of any added base or catalyst. The optimal protocol is applicable to access a wide range of cyano compounds including aromatic, heterocyclic, and aliphatic species. The conversion of aldoximes to nitriles takes place at room temperature in acetonitrile, whereas acetonitrile at reflux temperature is required for rapid conversion in the case of primary amides.     

Studien über Adsorption. VI

Ohne Zusammenfassung Deutsch von K. Popp (Leipzig).     

Nachweis und Bestimmung des Mangans sowie seine Trennung von anderen Elementen

Ohne Zusammenfassung     

Kolloidflockung durch Sonnenlicht

Ohne Zusammenfassung Deutsch von Alfred Kuhn (Leipzig).     

Beziehungen zwischen Hydratation und Stabilität eines Sols und die anomale Koagulationswirkung des Fluorions auf einige Hydroxydsole

Ohne Zusammenfassung Uebersetzt von W. R?diger (Leipzig).     

Ueber die Viskosität einiger hydrophober Sole und ihre Beeinflussung durch Elektrolytzusätze

Ohne Zusammenfassung Uebersetzt von R. K?hler (Leipzig).