Reactions of hexafluorocyclobutene with thiols thio)-1,3,3,4,4-pentafluorocyclobutane and 1,2were complicated by the elimination of hydrogen bis -(butylthio) -3,3,4,4tetrafluorocyclobutene fluoride to produce unsaturated sulfides which were obtained from the reaction of hexafluorocywere capable of further reaction. l-Btitylthio-clobutene and 1-butanethiol. 2,3,3,4,4-pentafluorocyclobutene, 1,2-bis-(butyl-OAK RIDGE, TENN. Secondary AND ROBERTDiethylamine has been treated with aluminum By analogy with previously reported reactions chloride and tetrduoroethylene a t 90' to obtain of chlorotrifluoroethylene with anionic reaan unidentified liquid boiling a t 176-177' and 761 mm.3 Rigby and Schroe-OAK RIDGE, TENN. RECEIVED NOVEMBER 9, 1949

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Samples of grade A Monel and grade A nickel were subjected statically in a single reactor to an undiluted atmosphere of gaseous fluorine at pressures up to one atmosphere absolute and temperatures up to 1500°F. The rate of consumption of fluorine on the mixed Monel and nickel saniples was followed by a press\ire-drop technique at 1100 and ISOO^F., but was found to be too rapid to be followed accurately at 1500''F. The grade A Monel was conservatively estimated to have consumed at least ^i-O times as much fluorine as the grade A nickel during the entire period of this exploratory investigation. Consequently, Monel metal was eliminated from further consideration as a material of construction for equipment exposed to fluorine at temperat\ires higher than 1300°F.

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