Synthesis and Crystal Structures of Isolable Terminal Aryl Hexatriyne and Octatetrayne Derivatives: Ar−(C≡C)nH (n = 3, 4)

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Abstract
Unprecedented stability has been observed in terminal aryl hexatriyne and terminal aryl octatetrayne derivatives by judicious choice of a bulky, nonplanar headgroup [viz., 4-(3,6-di-tert-butyl-N-carbazolyl)phenyl] which hinders topochemical intermolecular interactions in the crystal lattice.

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