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Table 1

Calculated diatropic, paratropic, and net current strengths (RCSs, in nA T−1) at the B3LYP/aug-cc-pVTZ level.

Molecules Diatropic Paratropic Net current
benzene 16.9 −5.1 11.8
c-C3H2 12.5 0.0 12.5
c-(C)C3H2 8.7 −5.3 3.5
c-(O)C3H2(a) 10.0 −6.8 3.2
9.9 0.0 9.9
c-C3HC2H 16.0 −2.4 13.6
c-C3HCN 12.2 −0.8 11.4
11.5 −0.6 10.9
c-HCCN 12.7 −2.2 10.5
c-CNC 13.3 −0.5 12.7
c-CNN 15.9 −3.0 12.9
c-HCNN+ 14.5 −0.1 14.4
14.9 −0.7 14.2
12.2 −1.6 10.6
c-C5H5 17.8 −4.6 13.1
14.7 −5.5 9.2
c-C4H4 2.7 −22.7 −20.0
c-C8H8 8.5 −9.7 −1.3
c-C8H8(b) (planar) 2.9 −42.9 −40.1
c-C10H10(b) (planar) 24.2 −4.1 20.1
c-C6H5CN (benzonitrile) 16.5 −5.3 11.2
m-benzyne 14.9 −5.2 9.7
o-benzyne 17.5 −3.8 13.7
p-benzyne 21.9 −1.9 19.9
pentalene 5.0 −24.8 −19.8
naphthalene 17.8 −4.8 13.0
1-CN-naphthalene(c) 17.8 −4.7 13.1
17.2 −4.8 12.4
2-CN-naphthalene(c) 17.6 −4.7 12.9
17.2 −5.0 12.2
anthracene(c) 20.2 −4.4 15.8
17.1 −4.8 12.3
pyrene(c) 15.9 −5.1 10.8
20.9 −4.4 16.4

Notes. (a)Two possible values. (b)These molecules, which are actually transition states, were forced to be planar on their potential energy surfaces. (c)Molecules with more than one symmetry-unique ring.

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