[Empyema necessitatis caused by Campylobacterrectus. Rapid identification by MALDI-TOF MS].

Empyema necessitatis (EN) is a very rare complication of a pleural empyema, in which the infection extends to adjacent soft tissues. Anaerobic bacteria are very rare etiologic agents of EN, which occurs in the course of chronic infections. We present the first case of empyema necessitatis caused by Campylobacter rectus.

Zinc Ammonio-dodecaborates: Synthesis, Lewis Acid Strength, and Reactivity.

Two series of zinc salts, [EtZn][A] and Zn[A], with weakly coordinating anions [A] as counterions have been prepared, and their activities as catalysts for hydrosilylation reactions of 1-hexene, benzophenone, and acetophenone have been investigated. The counterions and per- and partially chlorinated 1-ammonio--dodecaborate anions [MeNBCl] [], [PrNBHCl] [], [BuNBHCl] [], and [HexNBHCl] [] were chosen as potential and more readily available alternatives to carborate anions such as [CHBCl] and [HexCBCl]. The basicity of anion [] was determined as being close to that of the triflimide anion [N(SOCF)], and the fluoride ion affinities (FIAs) of compounds [EtZn][] and Zn[] are lower than those of the Lewis acids B(CF) and Zn[HexCBCl].