Monatshefte fur Chemie p. 1413 - 1426 (1987)
Update date:2022-08-03
Topics:
Falk, Heinz
Woess, Helmut
Several 10-arylbilatrienes-abc substituted with various substituents in position "4" of the phenyl residue were prepared.Configurational and conformational analysis using NOE-measurents, UV-VIS spectra together with PPP-SCF-LCAO-MO-CI-calculations, ring current effects and pKa-determinations showed the bilin chromophor to adopt a more or less undisturbed (Z,Z,Z)-sp,sp,sp-geometry, compared to bilatrienes-abc.The plane of the aryl moiety is, however, heavily twisted against the mean plane of the bilin chromophor-the torsional angle is estimated to be about 60 deg. - Keywords: 10-Aryl-bilatrienes-abc; Conformational Analysis
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