Accession Number : ADA307650

Title :   Synthesis and Properties of Perfluoroferrocene and Perfluororuthenocene. A Potential Class of High Temperature Materials.

Descriptive Note : Final technical rept. 1 jan 93-31 Dec 95,

Corporate Author : WAYNE STATE UNIV DETROIT MI DEPT OF CHEMISTRY

Personal Author(s) : Winter, Charles H.

PDF Url : ADA307650

Report Date : 31 DEC 1995

Pagination or Media Count : 17

Abstract : The goal of our research was to prepare decafluoroferrocene and decafluororuthenocene from permetalated precursors, to prepare mono- and disubstituted perfluorometallocenes, and to prepare and evaluate the thermal characteristics of polymers and oligomers derived from the perfluorometallocenes. In the period of support, we explored the preparation of permercurated, perlithiated, permagnesiated, perzincated, and peraluminated cyclopentadienyl complexes and examined the reactions of these species with simple electrophiles. The motivation for working with the permetalated metallocenes has been the finding that permercurated metallocenes cannot be fluorinated to give decafluorometallocenes. Most fluorinating agents are not strong enough to react with the permercurated metallocenes, while very strong fluorinating agents destroy the metallocenes. We reasoned that more reactive carbon-metal bonds would require less reactive fluorinating agents, which might lead to a successful preparation of decafluorometallocenes. Despite many attempts, it has so far not been possible to find that right combination of permetalated metallocene and electrophilic fluorinating agents that gives the perfluorometallonene.

Descriptors :   *MATERIALS, *HIGH TEMPERATURE, *FLUORINATION, THERMAL PROPERTIES, METALS, MAGNESIUM, COMPLEX COMPOUNDS, SYNTHESIS, POLYMERS, REACTIVITIES, ORGANOMETALLIC COMPOUNDS, CARBON, LITHIUM, CHEMICAL BONDS, ALUMINUM, FLUORINE, MERCURY, ZINC, OLIGOMERS, FERROCENES.

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Physical Chemistry
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE