Comparative Lewis Acidity in Fluoroarylboranes: B(o‑HC6F4)3, B(p‑HC6F4)3, and B(C6F5)3
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https://figshare.com/articles/dataset/Comparative_Lewis_Acidity_in_Fluoroarylboranes_B_i_o_i_HC_sub_6_sub_F_sub_4_sub_sub_3_sub_B_i_p_i_HC_sub_6_sub_F_sub_4_sub_sub_3_sub_and_B_C_sub_6_sub_F_sub_5_sub_sub_3_sub_/2452918
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The Lewis acidic fluoroarylborane B(o-HC6F4)3 (2) was prepared and its Lewis acid strength assessed in comparison to the known, related boranes B(C6F5)3 (1) and B(p-HC6F4)3 (3). Experimental methods based on spectroscopic probes and equilibrium measurements were used to show that B(C6F5)3 is the strongest Lewis acid of the three; while the Lewis acidities of 2 and 3 are comparable, the p-H-substituted isomer is slightly stronger in the tests employed. This contrasts with predictions made on the basis of computed bond formation energies, as recently reported by Durfey and Gilbert.
创建时间：
2016-02-20
