The S–S− residue is regarded as a potent nucleophile, because the S− anion is strongly activated by the α-effect of the lone pair of the adjacent sulfur atom. Indeed, the persulfurated cysteine residue is highly reactive and nucleophilic addition occurs with various electrophilic moieties...
Large electron density transfer from electron lone pair of the electron donor to electron acceptor leads to the formation of a new electronic structure and results in changes in geometry and vibrational frequency. These changes are attributed to two major factors: electron density redistribution and ...
When scanning electron microscopy is used the surface as well as a cross section of the contactor should be imaged.If a liquid material is used as a blocking agent in the formulation of the contactor, and the contactor is operated under conditions where the pores remain substantially fully ...