Stannic Fluoride
Title: Stannic Fluoride
CAS Registry Number: 7783-62-2
Additional Names: Tin tetrafluoride
Molecular Formula: F4Sn
Molecular Weight: 194.70
Percent Composition: F 39.03%, Sn 60.97%
Line Formula: SnF4
Literature References: Lewis acid. Prepd from SnCl4 and HF: Ruff, Plato, Ber. 37, 673 (1904); or from stannous fluoride and chlorine or bromine: Forbes, Anderson, J. Am. Chem. Soc. 67, 1911 (1945); from stannous oxide or sulfide and fluorine: Haendler et al., J. Am. Chem. Soc. 76, 2179 (1954). Review: Kemmitt, Sharp, Adv. Fluorine Chem. 4, 185-186 (1965).
Properties: Snow-white, tetragonal crystals. Very hygroscopic. d419 4.78. Sublimes at 705°. Hydrolyzes readily, but is more resistant to water than stannic chloride. Forms complexes with donor molecules.
Density: d419 4.78
Use: Friedel-Crafts catalyst.

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