Oxydation von elementarem Phosphor mit polysulfidischem Schwefel

Oxidation of Elemental Phosphorus by Polysulfidic Sulfur Red and white phosphorus are oxidized by aqueous solutions of alkali polysulfides. The reaction products are mixtures of thiophosphates, which contain compounds with phosphorus in different oxidation states. Some novel thiopolyphosphates have been isolated from these mixtures, their anions having chains or rings of directly connected phosphorus atoms. Reactions of tetraphosphorus trisulfide under the same conditions also lead to thiopolyphosphates with P? P bonds.     

Zur umsetzung von butylbromid mit elementarem zinn

The reaction of elemental tin with alkyl halides in the presence of suitable catalysts gives dialkyltin dihalides and trialkyltin halides. Of the various catalysts used on the n-butyl bromide—tin system, tetraalkylammonium salts were found to be the most effective. A mechanism for their catalytic action is proposed.     

Reaktionen von elementarem Schwefel mit halogenierten Methanen

Reactions of elemental Sulfur with Halogenated Methanes At 250°C a reaction between CCl₄ and sulfur forms S₂Cl₂ and CS₂ (besides small amounts of S₃Cl₂ and S₄Cl₂). CHCl₃ and sulfur above 200°C under catalytic influence of AlCl₃ are forming HCl, S₂Cl₂, and CS₂; CH₂Cl₂ and sulfur also are reacting (with AlCl₃ or AI as catalyst) to CS₂ and HCl. Only at 345°C one gets,CS₂, HCl, and H₂S from CH₃Cl and sulfur. At 160°C forms HBR,BR₂, and CS₂. Aluminium is necessary for the reaction of CH₂Br₂ at 250°C with sulfur, forming CS₂ and HBr. A mixture of products (CS₂,H₂S, HBr, CH₃SCH₃, and (CH₃)₃SBr) results from CH₃ Br and sulfur at 250°C. CH₃I and sulfur produce CS₂,I₂, and H₂S at 145°C. The same products are formed from CH₂I₂ and sulfur with aluminium as catalyst at 175°C.     

Die Wechselwirkung von elementarem Schwefel mit Ag-Feld-Emittern

Ohne Zusammenfassung     

Nachweis von elementarem Schwefel durch Reaktion mit Bleithiophenolat

Ohne Zusammenfassung     

Umsetzungen von ω-alkenylsubstituierten Zirconocendichloridkomplexen mit n-Alkyllithiumverbindungen in Gegenwart von Alkenen bzw. Alkinen

The reaction of ω-alkenyl substituted zirconocene dichloride complexes with two equivalents of n-butyllithium is strongly influenced in the presence of alkenes and alkynes. Metallacyclic zirconocene complexes of novel structures are obtained. The additives alkenes and alkynes compete with the ω-alkenyl substituents and the intermediate 1-butene for the formation of a metallacyclic structure. The reaction of ω-alkenyl substituted zirconocene dichloride complexes with two equivalents of ethyllithium and n-hexyllithium gives analogous reactions and metallacycles as with n-butyllithium.