Computational organic chemist Steven Bachrach discussed the dication, noting that the weak bonds forming the upright edges of the pyramid, shown as dashed lines in the structure he drew, have a Wiberg bond order of about 0.54; it follows that the total bond order for the apical carbon is 5 × 0.54 + 1 = 3.7 < 4, and thus the species is not hypervalent, but it is hypercoordinate.
Steven Bachrach, a computational organic chemist, discussed the dication, highlighting the weak bonds forming the upright edges of the pyramid structure (represented by dashed lines). These bonds have a Wiberg bond order of approximately 0.54. Consequently, the total bond order for the apical carbon is calculated as 3.7, which is less than 4. This finding indicates that the species is not hypervalent but rather hypercoordinate.