1971–1976 – Profiting from a New Beginning in Geneva | Zendy

Kurt Schaffner | Zendy

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1971–1976 – Profiting from a New Beginning in Geneva

Author(s) -

Kurt Schaffner

Publication year - 2009

Publication title -

chimia international journal for chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.387

H-Index - 55

eISSN - 2673-2424

pISSN - 0009-4293

DOI - 10.2533/chimia.2009.846

Subject(s) - intramolecular force , chemistry , excited state , photochemistry , naphthalene , acceptor , excimer , methane , stereochemistry , organic chemistry , fluorescence , atomic physics , physics , quantum mechanics , condensed matter physics

A few projects of organic photochemistry, which have been investigated in Geneva in 1971–76, are reviewed summarily. They include excited state-selective processes from the n,?* and ?,?* triplets and selectively occurring ? ? ?* induced reactions of ?,?-unsaturated cyclic ketones, oxadi-?-methane rearrangements and 1,3-acetyl shifts of ?,?-unsaturated methyl ketones, and di-?-methane rearrangements of benzoylnaphthobarrelene compounds. Furthermore, intramolecular triplet energy transfer dependence on rigid donor–acceptor syn-anti topologies between indanone and naphthalene moieties most likely reflects competition between radiationless energy dissipation by through-space aromatic ? interaction (amounting to intramolecular exciplex action) and through-?-bond exchange transfer. Finally, electronically integrating actinometry and time-resolved IR spectroscopy of excited states and reaction intermediates are mentioned.

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