Semin, G. K.; Babushkina, T. A.; Mamaev, V. P.; Krivopalov, V. P. published the artcile< Chlorine-35 nuclear quadrupole resonance in chloropyrimidines>, Category: pyrimidines, the main research area is nuclear quadrupole resonance chloropyrimidine.
The nuclear quadrupole resonance (NQR) spectra of 35Cl in 2- and 5-chloro-, 2,4-, 4,6-, 4,5-, and 2,5-dichloro-, 4,5,6-, 2,4,5-, and 2,4,6-trichloropyrimidines and tetrachloropyrimidine were measured at 77°K and calculated by the published additivity method to study the electron d. distribution on C atom of the ring and effect of the substituents. The additivity method of calculating the NQR frequencies of 35Cl is valid for the chloro substituted pyrimidines. It was used to determine electron d. distribution on various C atoms in the pyrimidine ring. The relative role of various mechanisms of the transmission throughout the ring of the effect of substituents is discussed.
Izvestiya Sibirskogo Otdeleniya Akademii Nauk SSSR, Seriya Khimicheskikh Nauk published new progress about Electron configuration. 6554-61-6 belongs to class pyrimidines, and the molecular formula is C4H2Cl2N2, Category: pyrimidines.
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia