Lutskii, A. E. published the artcileDipole moments of some substituted diphenylamines, Name: Bis(4-nitrophenyl)amine, the publication is Zhurnal Obshchei Khimii (1963), 33(3), 985-7, database is CAplus.
The following values of dipole moments (in D.) were determined from dielec. constants of solutions in C6H6 at 25¡ã (p,p’-dihydroxy and the nitro derivatives were examined in dioxane) in a group of substituted Ph2NH [substituents and dipole moments (D.) shown]: 3-HO, 1.98; 4-HO, 1.95; 3-MeO, 1.70; 4-MeO, 1.79; 2,2′-(HO)2, 3.69; 4,4′-(HO)2, 3.50; 4,4′-HO(MeO), 2.32; 4,4′-(MeO)2, 2.06; N,4- Ph(MeO), 2.09; N,4,4′- Ph(MeO)2, 2.49; N,4- Ac(AcO), 4.14; N,4,4′-Ac(AcO)2, 4.50; 2,2′-(NO2)2, 6.28; 4,4′(NO2)2, 5.13; 2,2′, 4,4′-(NO2)2Me(MeO), 6.47; 2,2′,4,4′-(NO2)2Me(MeO), 6.79. The aryl group introduced at the N atom of PhNH2 tended to disperse the effects of conjugation of the NH2 group among the aromatic nuclei. Diphenylamines with groups m both Ph rings showed the competing effect of these rings with the unshared electron pair of the central N atom, manifested by a neg. moment of group interaction as estimated from the dipole moments.
Zhurnal Obshchei Khimii published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Name: Bis(4-nitrophenyl)amine.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia