A Liquid‐Crystal Study of Heptalene | Zendy

Gottarelli Giovanni | Zendy; Hansen HansJürgen | Zendy; Spada Gian Piero | Zendy; Weber Roland H. | Zendy

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A Liquid‐Crystal Study of Heptalene

Author(s) -

Gottarelli Giovanni,

Hansen HansJürgen,

Spada Gian Piero,

Weber Roland H.

Publication year - 1987

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.19870700222

Subject(s) - chemistry , liquid crystal , biphenyl , perpendicular , crystallography , orientation (vector space) , stereochemistry , line (geometry) , condensed matter physics , organic chemistry , physics , geometry , mathematics

The chiral structure of heptalene is characterised, for a given configuration, by helicities, which are opposite in the direction ( x ) of the central C(5a)‐C(10a) bond and in the direction ( y ) of a line perpendicular to it, passing through the C(3)‐and C(8)‐atoms. These two helicities can be experimentally established and differentiated by the handedness of the cholesteric mesophases induced in a biphenyl‐type liquid crystal (LC) by chiral heptalenes with substituents favouring the x or y orientation along the nematic director of the LC.

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