Guest control in the self-assembly of H-shaped host to cyclopentanoid (5, < inf > 4 < /inf > < sup > 3 < /sup > ) net

Abstract

The H-shaped molecule 1,4-di[bis(4′-hydroxyphenyl)methyl]benzene (1a) and its octamethyl derivative (1b) crystallize in solvated and guest-free forms. CH3NO2 and CHCl3 solvents afforded the rare (5,43) net of contiguous pentagons in a two-dimensional (2D) sheet for 1a and 1b, respectively. The tetrahedral carbon centers are 3-connected nodes and hydrogen bonding OH groups are 4-center nodes of congruent cyclopentanoid rings. The first examples of pentagon layer tiling in a lattice inclusion host are reported. © 2008 American Chemical Society.