Organosubstituted Phosphazenes. XII. He(I) Photoelectron Spectra of Selected Pheynl- and p-N,N-Dimethylaminophenylfluorocyclotriphosphazenes.
Abstract
He(I) photoelectron Spectra are presented for P3N3F6-n (C6H5) (n=1,2,4) and P3N3F5C6H4N(CH3)2. Ionization energies are discussed in terms of perturbations of molecular orbitals of the parent aryl and phosphazene functions. The data confirm the strong electron withdrawing effect of the P3N3F5 moiety and show a dramatic decrease in this effect as fluorine atoms are replaced by phenyl groups. One also observes a significant destabilization of the phosphazene out of plane pi molecular orbital as the fluorine atoms are replaced by phenyl groups. The ionizations from the phenyl pi a2 and pi b1 orbitals are unresolved in phenyl phosphazenes thus demonstrating the lack of significant phosphazene - aryl mesomeric interactions. The electronic effect of the electron donating dimethylamino substituent on the phenyl unit is transmitted to the phosphazene through the sigma bond system. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1979
- Accession Number
- ADA075218
Entities
People
- Christopher W. Allen
- Jennifer C. Green
Organizations
- University of Vermont