Journal of Physical Organic Chemistry p. 54 - 62 (1995)
Update date:2022-08-03
Topics:
Rosengaus, Jacqueline
Willlner, Itamar
2,3-Bis(aminocyclohexyl)-6-methoxy-1,3,5-triazine (1a) forms intermolecular H-bonded complexes with 3,3'-diacetyl-cis-azobenzene (4b) and 6,6'-diethoxy-cis-thioindogo (5b), (association constants K=4.9*104 and 3.5*105 l mol-1, respectvively).The thermal cis->trans isomerization of 4b and 5b to 3,3'-diacetyl-trans-azobenzene (4a), and 6,6'-diethoxy-trans-thioindigo (5a), is inhibited in the intermolecular complex 1a-4b and 1a-5b.Molecular mechanics calculations support the formation of the intermolecular H-bonded complexes between 1a and 4b or 5b.
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