A novel p-sulfonatocalixarene/ytterbium(III) pyridine N-oxide inclusion complex has been structurally authenticated by X-ray diffraction studies and shows the self-assembly of the large calixarene tectons into extended sheets through intricate hydrogen bonding.
Atwood, JL., Dalgarno, SJ., Hardie, MJ., & Raston, CL. (2004). Hydrogen-bonded arrays of a ytterbium(III) p-sulfonatocalixarene complex. New Journal of Chemistry, 28(2), 326-328. https://doi.org/10.1039/b311288h