Syntheses and Structures of Cyclic and Short-Chain Linear Phosphazenes Bearing 4-Phenylphenoxy Side Groups

Harry R. Allcock, Dennis C. Ngo, Masood Parvez, Robert R. Whittle, William J. Birdsall

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Abstract

A series of cyclic and short-chain linear phosphazenes bearing the 4-phenylphenoxy side group has been synthesized. These compounds are models for the corresponding linear high polymer. The X-ray structures of [NP(O-C6H4-C6H5-p)2]3 (1), [NP(O-C6H4-C6H5-p)2]4 (2), and OP3N2(O-C6H4-C6H5-p)7 (6) are reported. Compound 6 represents the first three-phosphorus linear oligomeric phosphazene-bearing aryloxy side group to be described. The molecular structure of 6 showed that the linear phosphazene skeleton assumes a distorted cis-trans conformation. Crystals of 1 are monoclinic with space group P21/c with a = 23.296 (6) Å, b = 7.762 (4) Å, c = 34.666 (7) Å, 0 = 90.14 (2)°, V = 6268.4 Å3, and Z = 4. Crystals of 2 are triclinic of space group P1 with a = 10.462 Å, b = 16.433 Å, c = 23.326 Å, a = 94.25 (2)°, 0 = 91.03 (3)°, y = 103.59 (3)°, V = 3883.9 Å3, and Z = 2. Finally, crystals of 6 are monoclinic with space group P1/n with a = 10.413 (9) Å, b = 23.425 (9) Å, c = 36.359 (12) Å, β = 96.27 (6)°, V = 8815.77 Å3 6, and Z = 4.

Original languageEnglish (US)
Pages (from-to)2628-2634
Number of pages7
JournalJournal of the American Chemical Society
Volume113
Issue number7
DOIs
StatePublished - 1991

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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