Journal of the American Chemical Society p. 3152 - 3155 (1990)
Update date:2022-08-02
Topics:
Su, Debao
Guo, Cai-Yun
Willett, Roger D.
Scott, Brian
Kirchmeier, Robert L.
Shreeve, Jean'ne M.
The phosphonic acids (HO)2P(O)CF=CFP(O)(OH)2, CF2=CFCH2CH2P(O)(OH)2, and (HO)2P(O)C=CP-(O)(OH)2(CF2)nCF 2 (n = 1, 3) have been synthesized for the first time. trans-1,2-Difluoroethenediylbis(phosphonic acid) was prepared from (C2H5O)2P(O)CFBrCFBrP(O)(OC2H 5)2, which had been obtained via coupling of the corresponding sulfinate salt, (C2H5O)2P(O)CFBrSO2Na, by adding 30% aqueous hydrogen peroxide to a solution Of(C2H5O)2P(O)CFBrSO2Na and iron(II) sulfate. The X-ray crystal structure of the salt [Zn(H2O)6]2+[O(HO)P(O)CF=CFP(O)(OH)O] 2- indicates a network of [Zn(H2O)6]2+ dications and the acid dianions linked together with water molecules via hydrogen bonding. The phosphorus, fluorine, and carbon atoms are coplanar.
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