Cyclic Organophosphorus Compounds XVIII-The Mass Spectroscopy of Some 2-Amino-1,3,2-dioxaphosphorinans, Cyclic Phosphorodiamidates and Phosphorodiamidothionates

Article abstract of DOI:10.1002/oms.1210180404

Stepwise replacement of O in 1,3-dioxa-2-phospha(V)-cyclohexanes (or related ring systemes) by NR (R=H or Me) leads to an increase in the stability of the hetero-ring ions produced under electron impact conditions.In the case of the 2-phenoxy derivatives, there is also an increased abundance of ⁺ or ⁺ ions, and , for the 2-sulphides, a reduction in the abundance of ⁺ and ⁺ ions, with a cocurrent increase in that of ⁺ ions.Such trends have been correlated with ultraviolet photoelectron spectral data on a qualitative basis.