Monatshefte für Chemie / Chemical Monthly

, Volume 117, Issue 12, pp 1413–1422 | Cite as

Synthese und Röntgenkristallstruktur eines (15E)-Dihydrobilatrien-abc-Derivats

  • Ulrike Gabriella Wagner
  • Christoph Kratky
  • Heinz Falk
  • Gerhard Kapl
Organische Chemie Und Biochemie

Synthesis and X-ray crystal structure of a (15E)-dihydrobilatriene-abc-derivate

Abstract

The crystal structure of the (15E)-configurated 2,3-dihydrobilatriene-abc2, representing a model compound for the active form of the phytochrome chromophore, was determined at room temperature and at 97 K. Compared to the crystal structure of the corresponding (15Z)-derivative1, the molecule of2 shows a similar helix conformation, but with considerably larger helix pitch. The azide hydrogen atoms are localized at the nitrogen atoms of rings A, C and D. The distribution of bond lengths and bond angles is compatible with previous crystal structures and with the canonical formula. Tautomeric form, conformation and crystal packing are understandable on the basis of the observed intra- and intermolecular hydrogen bonds.

Keywords

Crystal structure of (15E)-2,3 dihydrobilatriene-abc Dihydrobilatriene-abc Phytochrome model compound 

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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Ulrike Gabriella Wagner
    • 1
  • Christoph Kratky
    • 1
  • Heinz Falk
    • 2
  • Gerhard Kapl
    • 2
  1. 1.Institut für Physikalische ChemieKarl-Franzens-Universität GrazGrazÖsterreich
  2. 2.Institut für ChemieJohannes-Kepler-Universität LinzLinzÖsterreich

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