Correlation of the nuclear quadrupole resonance frequencies of Cl35 of dihydrochlorides of certain phosphorus acids with the σφ constants of substituents on the phosphorus atom

Conclusions Two linear relationships exist between the nuclear quadrupole resonance frequencies of Cl³⁵ in dichlorides of certain phosphorus acids and the constants of substituents at the phosphorus atom; one of them is formed by alkyldichlorophosphonates, while the other is given by compounds in which conjugation is possible between the substituent and the d-orbitals of phosphorus-alkyldichlorophosphates, aryl- and vinyldichlorophosphonates.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2375–2378, November, 1967.Some of the substances were synthesized by G. P. Kharitonova, whom the authors would like to thank.