The absorption, magnetic circular dichroism (MCD), and Zeeman spectra of K2CuF4 single crystals were measured below 5 K. An unambiguous assignment of the d-d transitions can be made from the experimental spectra. Two zero-phonon magnetic dipole origins were observed, and their energies, intensities, polarization properties, and MCD parameters agree with those given by a ligand field model for a tetragonally elongated complex. The extensive vibrational fine structure on one of the transitions has been partially analyzed. An electric dipole vibronic origin must be interpreted on the basis of a Z)4i factor group rather than the Dlh site symmetry of the CuF6*~chromophore.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.