Accession Number : ADA290250

Title :   Transition Metal Complexes With Perfluorinated Ligands.

Descriptive Note : Final rept. 1 Apr 91-31 Mar 94,

Corporate Author : DARTMOUTH COLL HANOVER NH DEPT OF CHEMISTRY

Personal Author(s) : Hughes, Russell P.

PDF Url : ADA290250

Report Date : 31 MAR 1994

Pagination or Media Count : 10

Abstract : We have continued to make progress in preparing transition metal complexes containing fluorinated ligands, and have completed several sub-projects. We have prepared the first examples of transition metal compounds containing tetrafluoroethylene ligands that rotate rapidly on the NMR time scale. This is a significant discovery en route to a transition metal catalyst that will promote the Ziegler-Natta polymerization of fluorinated olefins to give high polymers. The factors governing the barrier to fluoroolefin rotation have been identified. We have synthesized the first example of a transition metal complex containing the pentafluorocyclopentadienyl ligand. This is an important ligand that may improve the thermal robustness of many transition metal compounds. (jg)

Descriptors :   *TRANSITION METALS, *LIGANDS, *FLUORINATION, *METAL COMPLEXES, THERMAL PROPERTIES, NUCLEAR MAGNETIC RESONANCE, SPECTROSCOPY, POLYMERS, TIME, SCALE, CATALYSTS, ROTATION, OLEFIN POLYMERS, TETRAFLUOROETHYLENE RESINS.

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Physical Chemistry
      Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE