Synthesis and Stereochemistry of Some (Silylamino)phosphinimines.

Abstract

A series of P-alkyl-P-halo substituted (silylamino)phosphinimines (Me3Si)2N-P(R)X=NSiMe3 are obtained either by oxidative addition or RI (R = Et, i-Pr, T-Bu) to (Me3Si)2N-P=NSiMe3 or by treatment of (Me3Si)2N)2PMe with I2 or Br2. Reaction of the iodophosphinimines with MeLi affords the dialkyl derivatives (Me3Si)2N-P(R)Me=NSiMe3 (R = Et, i-Pr, T-Bu). Alcoholysis of the t-BuI product in the presence of Et3N yields the N-H compounds Me3SiN(H)-P(t-Bu)OR=NSiMe3 (R = Me, CH2CF3). Variable-temperature 1H NMR studies of these (silylamino)phosphinimines demonstrate that, depending on what substituents are present, they may be fluxional via (1,3)-silyl exchange, hindered rotation about the amino P-N bond, or (1,3)-proton exchange. The results are discussed in terms of the electronic and steric effects of the phosphorus substituents. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1982
Accession Number
ADA118005

Entities

People

  • Joseph S. Engenito Jr
  • Robert H. Neilson

Organizations

  • Texas Christian University

Tags

DTIC Thesaurus Topics

  • Alcohols
  • Chemical Synthesis
  • Chemistry
  • Complex Mixtures
  • Distillation
  • Ethylene Glycol
  • Low Temperature
  • Military Research
  • Mixtures
  • Molecular Sieves
  • Organophosphorus Compounds
  • Phosphine
  • Phosphorus
  • Rotation
  • Security
  • Spectra
  • Stereochemistry

Fields of Study

  • Chemistry

Readers

  • Organic Chemistry

Technology Areas

  • Microelectronics