5.7
[1]. Gene G Wubbels, et al. The element effect and nucleophilicity in nucleophilic aromatic photosubstitution (SNAr*). Local atom effects as mechanistic probes of very fast reactions. J Org Chem. 8 Mar 7;7(5):195-4.
H15-H19-H5
P61-P64-P71-P8-P+P5-P4+P4-P6+P64-P45-P51
GHS7