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Elctron‐impact studies of diazadiphosphetidines
Author(s) -
Schlak O.,
Schmutzler R.,
Gregor I. K.
Publication year - 1974
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210090606
Subject(s) - ion , metastability , electron ionization , chemistry , mass spectrum , crystallography , analytical chemistry (journal) , organic chemistry , ionization
Abstract Electron‐impact studies of diazadiphosphetidines,[YF 2 PNMe] 2 (YF,Me, Ph, MeO,2,5‐Me 2 C 6 H 3 , and m‐ CF 3 C 6 H 4 ) are reported, the most abundant fragments corresponding to m/e [M/2–1] + , [M/2] + and [M/2–1] + . It is concluded from metastable data that formation of the noval rearrangement ion, [M] + →[M/2+1] + is predominantly due to an electron‐impact process. Variable temperature spectra of(F 3 PNMe)2, (i.e. for Y=F), suggest that ions of m / e [M/2‐1] + are formed, in part, by a thermal process. For the compound [( m‐ CF 3 C 6 H 4 )F 2 PNMe] 2 a well resolved negative ion spectrum has been obtained, with the molecular ion present in 100% abundance.