The quest for chain-link hydrogen-bonded capsules: Self-assembly of C-methyl calixresorcinarene with 5,5′-bipyrimidine
The self-assembly of the tetradentate ligand 5,5′-bipyrimidine with C-methyl calixresorcinarene is reported. The structures of three different three-dimensional hydrogen-bonded networks formed on self-assembly are presented. Two structures contain ligand-bridged resorcinarenes with a "chain-link" capsule motif. The third structure has the resorcinarenes diagonally cross-linked by the bipyrimidine ligand without forming distinct bridged capsules.
Barnes, Charles L., and Eric Bosch. "The Quest for Chain-Link Hydrogen-Bonded Capsules: Self-Assembly of C-Methyl Calix  resorcinarene with 5, 5 ‘-Bipyrimidine." Crystal growth & design 5, no. 3 (2005): 1049-1053.
Crystal Growth and Design