High-fidelity Recognition of Organotrifluoroborate Anions (R−BF3−) as Designer Guest Molecules |
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| Authors: | Edward G Sheetz Zhao Zhang Alyssa Marogil Minwei Che Dr Maren Pink Dr Veronica Carta Prof Dr Krishnan Raghavachari Prof Dr Amar H Flood |
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| Institution: | Department of Chemistry, Indiana University Bloomington, 800 E. Kirkwood Ave, Bloomington, IN 47405 USA |
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| Abstract: | The recognition of boron compounds is well developed as boronic acids but untapped as organotrifluoroborate anions (R−BF3−). We are exploring the development of these and other designer anions as anion-recognition motifs by considering them as substituted versions of the parent inorganic ion. To this end, we demonstrate strong and reliable binding of organic trifluoroborates, R−BF3−, by cyanostar macrocycles that are size-complementary to the inorganic BF4− progenitors. We find that recognition is modulated by the substituent's sterics and that the affinities are retained using the common K+ salts of R−BF3− anions. |
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| Keywords: | anion recognition cyanostar designer guest high fidelity organotrifluoroborate |
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