Selective synthesis and structural study of amino amide trichlorozincates

Thermo-responsive polymer catalysts for polyester recycling processes: switching from homogeneous catalysis to heterogeneous separations

“…This electron-withdrawing effect reveals a change in the chemical environment of the imidazolium moieties of the polymer chains, which could be attributed to the shielding provided by an increase in electron density conveyed by Zn m Cl n anions. 46,47 The latter also relates to the susceptibility of the anion populations to form hydrogen bond interactions with the protons of the imidazolium groups in the polymer backbone. 46,48 Raman spectroscopy is a widely used technique to describe speciation of halometallate ILs 42,45,46 as well as the coordination number of the corresponding anions via the analysis of M-Cl vibrations (typically found within the 250-600 cm −1 range).…”