The Equivalent Conductance of the Hexafluorocomplexes of Group IV (Si, Ge, Sn, Ti, Zr, Hf)¹

The Reaction of Wool with Potassium Hexafluorozirconate

“…It has been shown by a number of studies that the h.exafluorozirconate ion (ZrF62-) is stable and largely undissociated in aqueous solution ~7, 9, 10, 16, 21, 23J; that is, the equilibrium in Equation 1 lies largely to the left [23] ZrFe2-+ 2nH10 ZrF 6-,,(OH) ,,2-+ nF-+ nH30+;' (1) the replacement of e'ven one fluoride with an hydroxyl ion is not complete. We therefore conclude that the zirconium .is exhausted onto the wool as the negative ZrFa2-and/or ZrFf)(OH)2-ion.…”

Low temperature coating of anatase thin films on silica glass fibers by liquid phase deposition

“…Fig.2(c) shows the liner relationship between the TiO 2 fi lm thickness and the molar ratios of boric acid and ammonium hexafluorotitante. For the hydrolysis of [TiF 6 ] 2-ion in aqueous solution, the following equilibrium scheme has been proposed by Schmitt et al [10] [TiF 6 ] 2-+nH 2 O TiF 6-n (OH) n 2-+nHF (1) H 3 BO 3 reacts easily with F -ion and forms more stable complex as H 3 BO 3 +4HF HBF 4 +3H 2 O (2) However, excess amount of H 3 BO 3 will lead to the presence of amorphous titania because of few Fions. Meanwhile, the acid degree can also change the equilibrium.…”

Fabrication and Structural Control of Fe/Ti Oxide Thin Films with Graded Compositional Profiles by Liquid Phase Deposition

“…The reaction in LPD involves a ligand‐exchange (hydrolysis) equilibrium reaction of a metal‐fluoro complex ion, and an F − consuming reaction by the addition of boric acid as an F − scavenger. The following equilibrium scheme has been proposed by Schmitt et al 21 . for ligand exchange (hydrolysis) of [TiF 6 ] 2− in aqueous solution 22 …”