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The use of the triptycene framework for observing O⋯C=O molecular interactions

Lari, Alberth ; Pitak, Mateusz B. ; Coles, Simon J. ; Bresco, Emma ; Belser, Peter ; Beyeler, Andreas ; Pilkington, Melanie ; Wallis, John D.

In: CrystEngComm, 2011, vol. 13, p. 6978-6984

The triptycene skeleton has been used to measure (1,5) interactions between aldehyde groups, placed at both sp³ centres, and hydroxy or methoxy groups, placed at the respective ortho position on a benzene ring; HO⋯CHO interactions of 2.621–2.624 Å and MeO⋯CHO interactions of 2.528–2.584 Å were observed with the O⋯C vector making angles of 105.3–133.7° with the carbonyl bond. The...