Triethylgermylpentafluorobenzene C6F5GeEt3 reacts with CF3SO3H, HSO3Cl
, Me3SiOSO2Cl, chlorine, bromine, Cl2/AlCl3, or Br2/AlBr3 with cleavag
e of the C(aryl)-Ge bond. Cesium fluoride promotes electrophilic deger
mylation of C6F5GeEt3, possibly via the intermediate formation of a te
traorganylfluorogermanate.