Organic Letters 2014-02-21

Preparation and characterization of a halogen-bonded shape-persistent chiral alleno-acetylenic inclusion complex.

Silvia Castro-Fernández, Inmaculada R Lahoz, Antonio L Llamas-Saiz, José Lorenzo Alonso-Gómez, María-Magdalena Cid, Armando Navarro-Vázquez

Index: Org. Lett. 16(4) , 1136-9, (2014)

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Abstract

A chiral bidentate inclusion complex has been formed by halogen-bond interaction between the pyridyl moieties of a pyridoallenoacetylenic host and octafluorodiiodobutane. X-ray crystallography showed that the guest adopts a chiral conformation inside the molecular channels formed by stacking of the host units. A 10 ppm shielding of the (15)N NMR resonance for the pyridil units provided evidence of the formation of the halogen-bond complex in solution.