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Caro‐Cryptands: Tris‐carotenoid macrobicyclic ligands–synthesis, crystal structure, and dinuclear copper(I) complexes
Author(s) -
Lehn JeanMarie,
Vigneron JeanPierre,
BkoucheWaksman Itka,
Guilhem Jean,
Pascard Claudine
Publication year - 1992
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.19920750410
Subject(s) - cryptand , chemistry , tris , crystal structure , copper , condensation , crystallography , molecule , polymer chemistry , molecular wire , stereochemistry , ion , organic chemistry , biochemistry , physics , thermodynamics
The tris‐carotenoid macrobicycles 1 and 2 were obtained in good yields in a one‐step macrobicyclisation condensation between the tripode N(CH 2 CH 2 NH 2 ) 3 and the polyolefinic dialdehydes 5 and 6 . They form dinuclear cryptates by complexation of two Cu I ions. The crystal structure of the tris‐carotenoid compound 2 confirms that it contains three parallel polyolefinic strands. These substances may formally be considered as prototypes of molecular ‘cables’ formed by three electron‐conducting molecular wires.