New methods for synthesising poly(carbon monofluoride) (CF,),, and tetracarbon monofluoride C, F are reported. Pyrolytic graphite has been fluorinated and a new compound, graphite oxyfluoride, has been prepared. Poly-(carbon monofluoride) has been prepared in a flow reactor, in a fluidized-bed reactor, and in a high-pressure bomb reactor and tetracarbon monofluoride has been prepared by a high-pressure bomb technique. Some new structural data are presented for poly(carbon monofluoride). Recently, poly(carbon monofluoride) has been found to have a high potential as a solid lubricant and as a cathode material in high-energy batteries. POLY(CARBOK MOKOFLUORIDE) (CFX)?& has been knownsince 1934, when Ruff et al.l prepared a grey compound of composition CFo.92. reported a series of compositions, cF0.68 to cFo.995, varying from black in the case of CFo.6s through grey to white in the case of CFo.995. Tetracarbon monofluoride (C,F) was reported by W. and G. Riidoff in 1947. Reviews of the chemistry of these compounds have been published by Rudorff and H e n ~~i g . ~Very recently a series of Japanese publications on carbon monofluoride have a ~p e a r e d . ~ The poor reproducibility of these syntheses for carbon monofluoride, although not generally appreciated by fluorine chemists due perhaps to the widespread review of the synthesis, has been noted by several a ~t h o r s . l > ~, ~ Indeed it is nearly impossible to obtain significant quantities of white or even light grey carbon monofluoride by employing previous preparations, a grey material of stoicheiometry CFo.68 to CF,., normally being obtained.Samples of carbon monofluoride from our laboratories have been tested by the Lewis Research Center of the National Aeronautics and Space Administration and by the Frakford Arsenal of the U.S. Army and found to be a superior solid lubricant especially under high In 1947 W.

No abstract

No abstract

No abstract

No abstract