... (2001 [Yamato, T., Sakaue, N., Tanaka, K. & Tsuzuki, H. (2001). New J. Chem. 25, 434-439.] ), which exists as an equilibrium mixture of crown, syn-saddle and anti-saddle conformers. Yamato et al. (2001 [Yamato, T., Sakaue, N., Tanaka, K. & Tsuzuki, H. (2001). New J. Chem. ...