Photochemistry of Metallocenes

Laser flash photolysis has also been used to study the photophysics and photochemistry of metallocene-containing cryptands and their complexes with rare earth eations [69]. The metallocene moiety was shown to act as an efficient centre for the radiationless deactivation of the lanthanide excited state. Detailed time-resolved studies permitted the characterisation of the coordination chemistry about Dy " within the cryptate and showed, once again, that the functions within the host cryptand primarily responsible for coordination of the guest cation were the amide carbonyl groups. 

E. Koerner von Gustorf, F.-W. Grevels Photochemistry of Metal Carbonyls, Metallocenes, and Olefin Complexes. 

The number of reported instances where substituted metallocenes undergo phototransformations cleanly to products is still relatively small. The first incident was a disclosure37 by Finnegan and Hagen of a photochemical Fries rearrangement by Finnegan and Mattice.38 They examined the photochemistry of both phenyl ferrocenoate (7) and p-tolyl ferrocenoate (8) at low molarities in cyclohexane. For instance, a solution of 0.82 g 7 in 750 ml... 

Photochemistry of metal carbonyls 85 metallocenes and olefin com- (S81) plexes... 

Photolyses of ferrocene and ruthenocene in noncomplexing solvents generally leads to no net photochemistry. Other metallocenes, however, particularly d and d species, are more photosensitive than the d ° analogs (154). 

We have attempted to review the photochemistry of metal carbonyls, metallocenes, and olefin complexes under two aspects ... 

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