Honeycomb molecular network based upon a hydrate of 4,6-dichlororesorcinol and the photoproduct rtct-tetrakis(pyridin-4-yl)cyclobutane

The formation of a self-interpenetrated honeycomb molecular network based upon 4,6-dichlororesorcinol (4,6-diCl res), a water molecule, and the photoproduct rtct-tetrakis(pyridin-4-yl)cyclobutane (rtct-TPCB) is reported. Interestingly, only three of the four pyridine rings on the central cyclobutane ring are found to engage in O — H...N hydrogen bonds with either the 4,6-diCl res or an included water molecule, resulting in a three-connected net. Notably, the solid (4,6-diCl res) · (rtct-TPCB) · (H2O), C6H4Cl2O2 · C24H20N4 · H2O, contains channels that run along the crystallographic b axis, which are found to be interpenetrated. Although rtct-TPCB has been employed as a bridging ligand in the formation of numerous metal – organic materials, surprisingly neither the single-component X-ray structure nor any multi-component molecular solids based upon this stereoisomer have been reported previously. Lastly, the single-crystal X-ray structure of the photoproduct rtct-TPCB is also reported.

Source: Acta Crystallographica Section C - January 22, 2021 Category: Chemistry Authors: Santana, C.L. Battle, J.D. Unruh, D.K. Groeneman, R.H. Tags: crystal engineering hydrogen bonding [2   2] cycloaddition reaction organic solid state crystal structure interpenetration resorcinol photoproduct research papers Source Type: research