Accession Number : AD0693129

Title :   ON THE SYNTHESIS OF ReF7 AND THE EXISTENCE OF ReF2 AND ReF3.

Descriptive Note : Technical rept. Jul-Oct 68,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Johnson,Richard L. ; Siegel,Bernard

Report Date : 15 AUG 1969

Pagination or Media Count : 18

Abstract : The metal explosion technique can be used to synthesize a number of rhenium fluorides, including several that have not been reported previously. Under certain reaction conditions, one can obtain mixtures of the volatile fluorides ReF7 and ReF6. Under other conditions, one can prepare ReF7 free of ReF6. These volatile fluorides are products of Re - SF6 reactions. They are accompanied by the formation of nonvolatile rhenium fluoride films, which are soluble in aqueous NaOH solutions. A rhenium trifluoride is formed at high levels of imparted electrical energy, whereas a tetrafluoride forms at low energy levels. Rhenium explosions in PF5 produced a rhenium difluoride, which is also readily soluble in aqueous NaOH solutions and therefore can readily be separated from unreacted Re powder with which it is admixed on the reactor wall. The difluoride can also be scraped from the reactor wall, but the ReF2 recovered in this way is admixed with a much larger quantity of unreacted metal powder. (Author)

Descriptors :   (*RHENIUM COMPOUNDS, SYNTHESIS(CHEMISTRY)), (*EXPLODING WIRES, CHEMICAL REACTIONS), FLUORIDES, HYDROLYSIS, SULFUR COMPOUNDS

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE