Cation environment in the CoBr_2/PEG systems

摘要

UV-VIS spectra of the CoBr_2 in poly(ethylene glycol) (PEG) are presented and analyzed. PEG 200 and PEG 1000, i.e., two different chain length of the oligomer have been considered. The deconvolution of these spectra was performed to determine the local symmetry, or sub-species, of the complex ions formed in the CoBr_2/PEG systems. We found that the Co-coordination by some of the ligand's atoms of the polymer is dependent on the chain length of the PEG.