Phosphonic Acid Anhydrides [RPO2]n: Oligomerization and Structure

Stefan Fuchs, Hubert Schmidbaur

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The phosphonic acid anhydrides of the general formula [RPO2]n have been prepared with R = Me, Et, i-Pr, t-Bu, and Ph from the corresponding phosphonic acids and their chlorides and esters. Mass spectrometric data indicate that the trimers are the dominant oligomers for all five systems. According to their NMR spectra, the methyl and t-butyl compounds have a symmetrical (C3v) structure with equivalent RP groups, while the ethyl, i-propyl and phenyl homologues have the Cs structure with non-equivalent PR groups in the ratio 1:2.

Original languageEnglish
Pages (from-to)855-858
Number of pages4
JournalZeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
Issue number6
StatePublished - 1 Jun 1995
Externally publishedYes


  • NMR Spectra
  • Organophosphonic Acid Anhydrides
  • Phosphonic Acid Anhydrides
  • Stereochemistry


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