Excited singlet states of "hairpin" polyenes

URN to cite this document:: urn:nbn:de:bvb:355-epub-55499
DOI to cite this document:: 10.5283/epub.5549

Froelich, Wolfgang ; Dewey, Harry J. ; Deger, Hans ; Dick, Bernhard ; Klingensmith, Kenneth A. ; Puettmann, Wilhelm ; Vogel, Emanuel ; Hohlneicher, Georg ; Michl, Josef

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Date of publication of this fulltext: 05 Aug 2009 13:50

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Item type:

Article

Journal or Publication Title:

Journal of the American Chemical Society

Publisher:

American Chemical Society

Volume:

105

Number of Issue or Book Chapter:

Page Range:

pp. 6211-6220

Date:

1983

Additional Information (public):

CAN 99:139187 22-9 Physical Organic Chemistry 1070-89-9 Role: PRP (Properties) (Wittig reaction of methyltriphenylphosphonium bromide with diformylcycloheptatriene in presence of); 1779-49-3 Role: RCT (Reactant), RACT (Reactant or reagent) (Wittig reaction of, with sodium bis(trimethylsilyl)amide and diformylcycloheptatriene); 55759-42-7 Role: RCT (Reactant), RACT (Reactant or reagent) (Wittig reactions of, divinylbicyclododecapentaene and tricycloheptadecaheptaene from); 60237-65-2 Role: RCT (Reactant), RACT (Reactant or reagent) (Wittig reactions of, divinyltricycloheptadecaheptaene and tetracyclodocosanonaene from); 4692-14-2P; 50785-96-1P; 68539-85-5P; 86846-94-8P; 86846-95-9P; 86846-96-0P Role: SPN (Synthetic preparation), PREP (Preparation) (prepn. and excited singlet states of); 7333-67-7 Role: RCT (Reactant), RACT (Reactant or reagent) (reaction of, with butyllithium and diformylcycloheptatriene); 28172-94-3 Role: PRP (Properties) (treatment with methyltriphenylphosphonium bromide and sodium bis(trimethylsilyl)amide, divinylcycloheptatriene from)

Institutions:

Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Bernhard Dick

Identification Number:

Value	Type
1983:539187	Other
10.1021/ja00358a003	DOI

Keywords:

Electron configuration; Fluorescence; Magnetic circular dichroism; Ultraviolet and visible spectra (of hairpin polyenes); Molecular orbital (PPP-CI, of hairpin polyenes); Energy level excitation (singlet, of hairpin polyenes); polyene hairpin UV fluorescence; excited singlet hairpin polyene; electron configuration hairpin polyene; MO hairpin polyene

Dewey Decimal Classification:

500 Science > 540 Chemistry & allied sciences

Status:

Published

Refereed:

Yes, this version has been refereed

Created at the University of Regensburg:

Item ID:

5549

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Abstract

The synthesis and UV-visible, polarized-fluorescence and MCD spectra of 6 U-shaped hairpin polyenes (e.g., I) are reported. Qual. arguments and results of p-electron calcns. permit the identification of 4 excited singlet states and their assignment to mixts. of singly and doubly excited configurations. The hairpin polyenes represent a link between the all-trans-polyenes on the 1 hand and the ...