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Z. anorg. Chem. 213, 106 (1933). F. W. ASTON. Phil Mag. 40, 628 (1920). T. F. ANDERSON, E. N. LASSETTRE and D. M. YOST. J. Chem. Phys. 4, 703 13. E. 14. W. MILLAR. J. Amer. Chem. Soc. 45, 874 (1923). W. LAUBENGAYER, R. P. FERGUSON and A. E. NEWKIBK. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. (1936). 15. WIBERG and W. MATHIN'G. Ber. dtsch. chem. Ges. 70, 690 (1937). J. Amer. Chem. Soc. 63, 559 (1941). 16. H. BRAUNE and P. PINNOW. Z. phys. Chem. 35, 239 (1937). GOLDFINGER. Naturwissenschaften 17, 387 (1929).

Chem. 250, 331 (1943). 61. H. MEERWEIN, G. HJNZ, P. HOFMANN, E. PFEIL. J. prakt. Chem. 147, 257 (1937). 62. H. MEERWEIN, E. BATTENBERG, H. GOLD, E. PFEIL and G. WILLFANG. 37. 38. G. 63. J. prakt. Chem. 154, 83 (1939). H. MEERWEIN, U. EISENMENGER and H. MATTHIAE. Liebigs Ann. 566, 150 (1950). BALZ arid G. SCHIEMANN. Ber. dtsch. chem. Ges. 60, 1186 (1927). M. F. DUNKER, E. B. STARKEY and G. L. JENKINS. J. Amer. Chem. Soc. 64. G. 65. 58, 2308 (1936). 66. E. WILKE-DORFURT. Z. angew. Chem. 37, 712 (1924), 67.

Temp. phosphorus it can give C; atom of one molecule of BF3 mole in % BF 3 . order to make the envelope of boron up to an octet. For thivS purpose work of Besson and found that at a temperature the they repeated 130 which excluded the possibility of the decomposition of the of electron sextet coordination molecule of pound PH3 . compounds formed, on the action of excess BF3 only one it was absorbed by one molecule of PH3 and a comBF3 was obtained. As regards the product PH3 2BF3 in . , the author's opinion it is a derivative of phosphoric acid fluoroborate, which may be formed as a result of a secondary reaction according to the scheme [PH 3 (BFa )l F Later data of Martin and collaborators that BF3 and PH3 compounds state.

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