Catalytic activity in the reversion of an energy storing valence photoisomerization

Autor:	Guilford Jones, B R Ramachandran
Rok vydání:	1976
Předmět:	Chemical potential Chemical kinetics Valence (chemistry) Photoisomerization Chemistry Organic Chemistry Molecule Quantum efficiency Photochemistry Excitation Catalysis
Zdroj:	The Journal of Organic Chemistry. 41:798-801
ISSN:	1520-6904 0022-3263
DOI:	10.1021/jo00867a011
Popis:	Valence photoisomerization of endo-tricyclo(5.2.1.0(2,6))-deca-4,8- diene-3-one gives a cage structure in quantitative chemical yield and with a quantum efficiency of 0.4 (350 nm). The efficiency of storage of electronic excitation energy as chemical potential energy is 8%. The photoisomer is thermally quite stable but can be reverted to dienone in the presence of Rh(I) complexes at 140-180C. Catalyst instability prohibits significant recycling of the system. Rate studies bear significantly on the mechanism of Rh(I) catalyzed valence isomerizations.
Databáze:	OpenAIRE
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