The title compound, C(7)H(14)BrN(2) (+)·Br(-), was prepared by nucleophilic substitution of DABCO (systematic name: 1,4-diaza-bicyclo-[2.2.2]octa-ne) with dibromo-methane in acetone. The structure features Br⋯H close contacts (2.79 and 2.90 Å) as well as a weak bromine-bromide inter-action [3.6625 (6) Å].

The stereospecific hydrolysis of bulky aminophosphine boranes is reported for the first time. The resulting phosphinous acid boranes, upon activation, undergo stereospecific nucleophilic substitution reaction at the phosphorous center with amine nucleophiles. The combination of these two processes provides a novel access to bulky P*-ligands.

The ability of the pyridinium adduct of 1,3-dimethyl-5-methylenebarbituric acid (2) to undergo nucleophilic substitution reaction has been examined. Various types of nucleophiles, including cyanide, barbiturate, sulfide anions and 1,2-bis(diphenylphosphino)ethane substitute the pyridinium fragment in 2 leading to synthesis of new organic derivatives.

Herein we report on the facile preparation of brominated SWCNTs based on two complementary reductive activation routes. The respective brominated SWCNTs are highly reactive and can be used in nucleophilic substitution reactions and represent versatile starting materials for the generation of sidewall functionalized SWCNTs with a high density of functional moieties.

We report here a benchmark study on the bimolecular nucleophilic substitution (S(N)2) reaction between hydride and methane, for which we have obtained reference energies at the coupled cluster toward full configuration-interaction limit (CC-cf/CBS). Several wavefunction (HF, MP2, coupled cluster) and density functional methods are compared for their reliability regarding these reference data.