Abstract
The 77 K emission spectra and excited-states decays of trans-Cr(py)/sub 4/F/sub 2//sup +/, cis-Cr(phen)/sub 2/F/sub 2//sup +/, cis-Cr(bpy)/sub 2/Cl/sub 2//sup +/, trans-Cr(py)/sub 4/FBr/sup +/, and Cr(bpy)/sub 3//sup 3 +/ have been recorded in hydroxylic and nonhydroxylic glasses. The character of the emission depends upon the relative dispositions of the /sup 2/E level and one of the /sup 2/T/sub 1/ components. The energies of these levels are determined by intramolecular and environmental factors, and solvent-induced level inversion occurs in cis-Cr(phen)/sub 2/F/sub 2//sup +/. Multiple solvate effects are most important when the two excited levels are proximate. The emission spectral changes in DMF/H/sub 2/O solutions suggest that the solvent cavity size depends on the composition. Evidence to support the assignment of a negative pi-donation angular overlap model parameter to pyridine is presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
