The HO2 + SO2 → HOSO + 3O2 reaction without and with (H2O)n (n = 1–3) have been investigated using CCSD(T)/CBS//M06-2X/aug-cc-pVTZ methods, and canonical variational transition state theory with small curvature tunneling.

Bis(pyrazolyl)borate complexes [BBN(pz R ) 2 ]Cu(I) were evaluated as catalysts in the reaction of carbene/nitrene transfer and addition to C=C bonds of a wide range of aromatic, heterocyclic and aliphatic olefins. The complexes exhibit high catalytic efficiency and selectivity in both processes.

A series of new copper(I) complexeshave been synthesized and fully characterized. Single crystal studies of these complexes showed weak intramolecular CÀ H⋅⋅⋅Cu interactions which can be assigned as agostic or anagostic interactions. Their catalytic application in carbene insertion into NÀ H and BÀ H bonds demonstrates wide substrate scope, high yields and selectivity.