Metal-to-metal electron-transfer emission in cyanide-bridged chromium : ruthenium complexes : effects of configurational mixing between ligand field and charge transfer excited states

doi:10.1021/ic8011266

Repozytorium Uniwersytetu Jagiellońskiego (RUJ)
→
Bibliografia Publikacji Pracowników UJ
→
Publikacje naukowe
→
Zobacz pozycję

Brak obsługi JavaScript w Twojej przeglądarce. Niektóre funkcje tej strony mogą być niedostępne.

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	10.1021/ic8011266
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