Vokin, A. I. published the artcileSolvatochromism of heteroaromatic compounds: XXVIII. Factors affecting the nonspecific solvatochromic effect in the UV spectra of aromatic nitro compounds in aprotic protophilic solvents, Product Details of C12H9N3O4, the publication is Russian Journal of General Chemistry (2006), 76(4), 596-614, database is CAplus.
Examination of the UV spectra of a large series of solvatochromic indicators of the general formula 1-X-4-NO2-C6H4 in aprotic solvents confirmed the proportionality between the dipole moments of these compounds in the ground (¦Ìg) and first electronically excited (1A1, ¦Ìe) states: ¦Ìe = r¦Ì¦Ìg. The coefficient r¦Ì was determined by applying the equation of the Bakhshiev-Bilot-Kawski solvatochromism theory both to nonspecifically solvated mols. and to their H complexes with aprotic protophilic solvents. An anisotropy of the electron redistribution was revealed for low-symmetry 1-substituted 2,4-dinitrobenzenes. The r¦Ì value obtained allowed the calculation of the Kamlet-Taft empirical solvatochromic parameter ¦Ð* on the basis of generalized characteristics of the solvent.
Russian Journal of General Chemistry 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 C9H8BrF3, Product Details of C12H9N3O4.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia