Improved physical properties and rotational dynamics in a molecular gyroscope with an asymmetric stator structure.
Org Lett
; 8(16): 3417-20, 2006 Aug 03.
Article
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| MEDLINE
| ID: mdl-16869624
ABSTRACT
[structure see text] A molecular gyroscope consisting of a 1,4-diethynylphenylene rotator linked to trityl and triptycyl groups (3) showed significantly improved physical properties and faster rotational dynamics than analogous symmetric bis(trityl) (1) or bis(triptycyl) (2) structures. An activation energy of 7.9 kcal/mol for 3 was determined by 2H NMR. This is ca. 4-6 kcal/mol lower than that of compound 1. The different dynamics of the three compounds can be qualitatively understood in terms of their different packing coefficients.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Org Lett
Asunto de la revista:
BIOQUIMICA
Año:
2006
Tipo del documento:
Article
País de afiliación:
Estados Unidos