Dielectric properties of grown single crystals of Na2SbF5 and Na3Sb2F9
have been carried out. The values of the dielectric constant of Na2Sb
F5 and Na3Sb2F9 are about 24.1 and 14.3, respectively, at temperatures
from 30-degrees-C to 250-degrees-C and 225-degrees-C for 100 kHz.