Abstract
The preparation and characterization of the ammonium hexafluorosilicate salts, 2[R]+ [SiF6]2- (where R = piperidinium (2), methylammonium (3), quinolinium (4), acridinium (5), 2,2,6,6-tetramethylpiperidinium (6), and propylammonium (7) is described. The salts were prepared from the reaction of the corresponding alkylammonium fluoride with silica gel. The compounds were characterized by NMR, IR, mass spectrometry and in the case of 1 (piperidinium fluoride), 2-4 by X-ray crystallography. Compounds 1-3 crystallize in the orthorhombic crystal system (space groups Iba2, Fdd2, and Pnnm, respectively), with Z = 8, 14, and 4, respectively. Compound 4 crystallizes in the triclinic space group P-1, with Z = 2. Compounds 1-4 exhibit hydrogen bonding.
Original language | English |
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Pages (from-to) | 155-160 |
Number of pages | 6 |
Journal | Journal of Fluorine Chemistry |
Volume | 115 |
Issue number | 2 |
DOIs | |
State | Published - Jun 28 2002 |
Keywords
- Alkylammonium
- Fluoride
- Hexafluorosilicate
- Hydrogen bonding
- NMR
- X-ray
ASJC Scopus subject areas
- Biochemistry
- Environmental Chemistry
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry