The title compounds, CHO and CHO, were formed by careful hydrolysis of the corresponding diethyl esters. Their single crystals were grown from an ethyl acetate/hexane mixture. Crystals of both compounds have monoclinic (2) symmetry with a single mol-ecule in the asymmetric unit. Both crystal structures are very similar and display four -CO-OH⋯O=C(OH)- hydrogen bonds, forming a two-dimensional double-layered framework.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073000 | PMC |
| http://dx.doi.org/10.1107/S2056989018009593 | DOI Listing |
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