Zusammenfassung
The cyclopentadienyl (Cp) ligand coordinates to high- and low-oxidation state transition metals as well as main group metals. Consequently, a variety of different excited states and photoreactions is possible, This diversity is illustrated by selected examples. Recent observations are emphasized. Spectral and photochemical properties are related to the following electronic transitions: ...
Zusammenfassung
The cyclopentadienyl (Cp) ligand coordinates to high- and low-oxidation state transition metals as well as main group metals. Consequently, a variety of different excited states and photoreactions is possible, This diversity is illustrated by selected examples. Recent observations are emphasized. Spectral and photochemical properties are related to the following electronic transitions: metal-centered (e.g, Cp2NbCl2, TlCp), intraligand, ligand-to-metal charge transfer (e.g. CpReO3, CpTiCl3, Cp2TiS5, TlCp), metal-to-ligand charge transfer, ligand-to-ligand charge transfer (e.g. Cp2Zr-2,2'-biquinoline(2+)), metal-to-metal charge transfer (e.g. Cp2Ti[NCRu(CN)(5)](2)(6-)), outer sphere charge transfer (e.g. CoCp2+Mn(CO)(5)(-), CpWH2 x 9,10-phenanthrenequinone) and charge-transfer-to-solvent. The Cp ligand may be directly involved in these electronic transitions or act as a spectator ligand. (C) 2001 Elsevier Science B.V. All rights reserved.
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