Intraligand charge-transfer spectra

The ion [Cr(bipy)3] in solution exhibits an ESR spectrum from which g = 1.9971 and the hwerfine splitting constant of Cr, is 20.4 x 10 cm". There is further splitting of the Cr hyperfine lines due to the N nuclei of the ligands, which indicates strong a bonding. Its electronic spectrum consists of charge-transfer and intraligand bands. ... 

FIGURE 1 A schematic absorption spectrum of a transition metal complex ion in the UV-VIS region. The central ion bands correspond to d d transitions the ligand bands correspond to charge transfer transitions and/or to intraligand transitions. 

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