In the process of examining the reaction scope, we managed to obtain SC-XRD data on compounds 7, 8, 9, and 17 (Figure 3, bottom). In this suite, the C1•••C3 transannular distances are still unusually short but all slightly longer than that of 2, 21 decreasing in the order of: 8 (1.812(2) Å) ~ 9 (1.8123(18) Å) > 7 (1.809(2) Å) > 17 (1.802(2) Å). The C3-S bonds (ranging from 1.806(1) Å in 17 to 1.8119 (12) Å in 9) and the S-Feq bonds (average distances of ~1.62-1.64 Å in the series) are also both notably longer in these Ar-SF4-BCP-Cl compounds than in 2. The C1-Cl bond distance in these four compounds varies but is centered around that of 2, ranging from 1.752(1) Å in 8 to 1.766(1) Å in 7. Another noticeable difference is that the qC3-S-Feq in these Ar-SF4-BCP-Cl compounds, on average, is closer to 90º than in 2, where the equatorial fluorine atoms of the SF5 group seem to pucker away from the BCP ring. This could be attributed to an increased repulsive interaction between the equatorial fluorine atoms and the BCP ring in 2, as 2 exhibits a shorter C3-S bond than the Ar-SF4-BCP-Cl compounds. The unit cell for 18 contains two symmetry-independent moieties (only one shown).