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. 2018 Jan 2;3(1):22–29. doi: 10.1021/acsomega.7b01642

Table 1. Selected Geometrical Parameters of Parent and Brominated [2.2]Paracyclophanes 12a.

cyclophane method d (d′) (Å) α/β (deg) Φ (deg)
PCPb calc 3.08 (2.78) 11.9/11.0 7.1
  [3.08 (2.77)] [12.2/11.5] [17.6]
expc 3.10 (2.78) 12.5/11.0 12.6
1 calc 3.08 (2.78) 12.0/11.3 17.0/11.0
p-2 calc 3.08 (2.77) 12.0/11.5 17.9
m′-2 calc 3.08 (2.77) 11.9/11.3 18.3/8.6
expd 3.09 (2.76) 13.6/10.0 20.6/10.1
o′-2 calc 3.08 (2.77) 12.0/11.5 18.0
expe 3.08 (2.77) 11.5/11.8 19.4
a

Selected structural parameters: d, the interplanar distance between the mean planes defined by the unbridged atoms of the (bromo)benzene unit; d′, the averaged distance of the two sets of the facing bridgehead atoms; α, the averaged deformation angle between the mean plane and the bridgehead atom; β, the additional deformation angle of the linker atom from the mean plane; Φ, the dihedral angle around bridgehead and linker atoms. Geometries were optimized at the DFT-D3(BJ)-TPSS/def2-TZVPP level. The values for SCS-MP2 geometry are within brackets.13

b

Parent [2.2]paracyclophane.

c

Ref (13).

d

Ref (22).

e

Ref (23).