Malayan Agricultural Journal · 1933 · 40 citations · 0 references
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Invited for this month's cover is the group of Andreas Kornath at the Ludwig-Maximilian University of Munich (Germany). The cover picture shows the crystal structures of protonated γ-butyrolactone ([(CH<sub>2</sub> )<sub>3</sub> OCOH][AsF<sub>6</sub> ]) and γ-butyrolactam ([(CH<sub>2</sub> )<sub>3</sub> NHCOH][AsF<sub>6</sub> ]). Both salts were synthesized by reacting the neutral compounds in the superacidic system HF/AsF<sub>5</sub> at low temperature. Interestingly, the X-ray structure analyses revealed not only structural parameters of the salts, but also the existent of C⋅⋅⋅F contacts in both species. Quantum chemical calculations were performed to investigate the nature of these contacts. Read the full text of their Full Paper at 10.1002/open.202000220.