Bel’skii, V. E. published the artcileStructure and chemical shifts in phosphorus-31 NMR of phosphonic acid esters, Safety of Diethyltrichloromethylphosphonate, the publication is Zhurnal Obshchei Khimii (1972), 42(11), 2427-31, database is CAplus.
The induction constants σ* of R groups correlated linearly with the chem. shift of 31P in 37 RP(O)(OEt)2 (R = alkyl or substituted alkyl groups), provided that hyperconjugation effects were taken into account. The presence of unshared electron pairs in R at the C atom adjacent to the P destroyed the linear relationship; the same was true of R groups containing multiple bonds.
Zhurnal Obshchei Khimii published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C5H10Cl3O3P, Safety of Diethyltrichloromethylphosphonate.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics