A three-dimensional hydrogen-bonded network based on a rare topology has been constructed using an organic molecule synthesized in the solid state. The molecule is obtained using a supramolecular protecting-group strategy that is applied to a solid-state [2+2] photodimerization. The photodimerization affords a novel head-to-head cyclo-butane product. The cyclo-butane possesses tetrahedrally disposed -hydrogen-bond donor (phenolic) and -hydrogen-bond acceptor (pyridyl) groups. The product self-assembles in the solid state to form a network that exhibits twofold interpenetration. The cyclo-butane adopts different conformations to provide combinations of hydrogen-bond donor and acceptor sites to conform to the structural requirements of the net.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6830215 | PMC |
| http://dx.doi.org/10.1107/S2052252519011382 | DOI Listing |
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