Repozytorium Uniwersytetu Jagiellońskiego
Metal-to-metal electron-transfer emission in cyanide-bridged chromium : ruthenium complexes : effects of configurational mixing between ligand field and charge transfer excited states
Metal-to-metal electron-transfer emission in ...
Opis pozycji
| tytuł: | Metal-to-metal electron-transfer emission in cyanide-bridged chromium : ruthenium complexes : effects of configurational mixing between ligand field and charge transfer excited states |
| autor: | Chen Yuan-Jang, Odongo Onduru S., McNamara Patrick G., Szaciłowski Konrad  , Endicott John F. |
| tytuł czasopisma: | Inorganic Chemistry |
| tom: | 47 |
| numer: | 23 |
| data wydania: | 2008 |
| strony: | 10921-10934 |
| ISSN: |
0020-1669 |
| eISSN: |
1520-510X |
| DOI: | |
| język: | angielski |
| język czasopisma: | angielski |
| abstrakt w j. angielskim: | Irradiations of the transition metal-to-transition metal charge transfer (MMCT) absorption bands of a series of cyanide-bridged chromium(III)-ruthenium(II) complexes at 77 K leads to near-infrared emission spectra of the corresponding chromium(II)-ruthenium(III) electron transfer excited states. The lifetimes of most of the MMCT excited states increase more than 10-fold when their am(m)ine ligands are perdueterated. These unique emissions have weak, low frequency vibronic sidebands that correspond to the small excited-state distortions in metal-ligand bonds that are characteristic of transition metal electron transfer involving only the non-bonding metal centered d-orbitals suggesting that the excited-state Cr(II) center has a triplet spin configuration. However, most of the electronically excited complexes probably have overall doublet spin multiplicity and exhibit an excitation energy dependent dual emission with the near in energy Cr(III)-centered and MMCT doublet excited states forming an unusual mixed valence pair. |
| typ: | artykuł w czasopiśmie |
| podtyp: | artykuł |
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