Citation: Mercier, N; Leblanc, M; Durand, J (1997). New frequency doubling compounds: K4 Ln2 (C O3)3 F4 (Ln = Pr, Nd, Sm, Gd, Eu); crystal structure and characterization. European Journal of Solid State Inorganic Chemistry, 34, pp. 241-249.
Formula: C3 F4 Gd2 K4 O9
Chemical name:Tetrapotassium digadolinium tricarbonate tetrafluoride