Table 1.

X‐ray crystallographic data: selected bond lengths and angles.

Complex	r(N−X) [Å]	r(X−X) [Å]	σ(N‐X‐N) [°]	r(Ar−Ar) [Å][a]
8 [b] (X=Ag)	2.146(5) to 2.165(5)	3.5541(8) to 3.6351(8)	174.9(2) to 178.7(2)	3.628(4) to 4.067(7)[c]
1 [d][19] (X=I)	2.255(3) to 2.261(3)	–	177.66(12) to 180.0	–
3 [e] (X=I)	2.256(5) to 2.316(5)	–	174.1(2) to 176.17(18)	3.678(4) to 3.972(5)
4 [f] (X=I)	2.248(5) to 2.302(5)	3.8621(7) to 3.887(1)	175.26(18) to 177.03(17)	3.641(3) to 3.914(4)

[a] Distances between the centroids of overlying intramolecular aryl groups. [b] Two slightly different helices occur in the crystal structure of 8. [c] The range does not include the distance for the one instance of the CH–π interaction (see the Supporting Information). [d] The unit cell of 1 contains multiple complexes. Data from Ref. 19. [e] The unit cell of 3 contains multiple complexes. [f] The range of values is given for both the M and the P helices, which were measured at temperatures of 150 and 100 K, respectively.