Accession Number:

AD0163891

Title:

Polychlorinated Metallocenes and Their Synthesis.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Report Date:

1972-07-18

Pagination or Media Count:

9.0

Abstract:

The patent concerns novel polychlorinated metallocenes that have the following formulas C5H5-mClmMC5H5 and C5H5-nCln2M, wherein M is iron, ruthenium or osmium, m is an integer from 3 to 5, inclusive, and n is an integer from 2 to 5, inclusive. The products are prepared by reacting a monochlorometallocene or a 1,1-dichlorometallocene with an organolithium compound in the presence of a solvent, recovering a 1-chloro-2-lithiometallocene or a 1,1-dichloro-2,2-dilithiometallocene, and then reacting one of the latter compounds with a chlorination agent to obtain 1,2-dichlorometallocene or 1,1,2,2-tetrachlorometallocene. The lithiation step and the chlorination step can then be repeated. The polychlorinated metallocenes are useful in preparing metallocene-containing polymers that are particularly suitable as ablative plastics. They also can be used to synthesize high temperature andor high density fluids as well as for additives for lubricants and as flame retardant additives.

Subject Categories:

  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE