GB981268A - Organo-trifluorosilane complexes - Google Patents
Organo-trifluorosilane complexesInfo
- Publication number
- GB981268A GB981268A GB1486963A GB1486963A GB981268A GB 981268 A GB981268 A GB 981268A GB 1486963 A GB1486963 A GB 1486963A GB 1486963 A GB1486963 A GB 1486963A GB 981268 A GB981268 A GB 981268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trifluorosilanes
- acidification
- purification
- solution
- examples
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000020477 pH reduction Effects 0.000 abstract 4
- 238000000746 purification Methods 0.000 abstract 4
- 239000000243 solution Substances 0.000 abstract 4
- WPPVEXTUHHUEIV-UHFFFAOYSA-N trifluorosilane Chemical class F[SiH](F)F WPPVEXTUHHUEIV-UHFFFAOYSA-N 0.000 abstract 4
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract 2
- 229910052783 alkali metal Inorganic materials 0.000 abstract 2
- 150000001340 alkali metals Chemical class 0.000 abstract 2
- 230000000536 complexating effect Effects 0.000 abstract 2
- 238000000354 decomposition reaction Methods 0.000 abstract 2
- 230000008929 regeneration Effects 0.000 abstract 2
- 238000011069 regeneration method Methods 0.000 abstract 2
- BHOCBLDBJFCBQS-UHFFFAOYSA-N trifluoro(methyl)silane Chemical compound C[Si](F)(F)F BHOCBLDBJFCBQS-UHFFFAOYSA-N 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- 239000005046 Chlorosilane Substances 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical class [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical class Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 abstract 1
- -1 chlorosiloxanes Chemical class 0.000 abstract 1
- XRRDNAZMVAXXQP-UHFFFAOYSA-N difluoro(dimethyl)silane Chemical compound C[Si](C)(F)F XRRDNAZMVAXXQP-UHFFFAOYSA-N 0.000 abstract 1
- 239000012025 fluorinating agent Substances 0.000 abstract 1
- 238000003682 fluorination reaction Methods 0.000 abstract 1
- 150000002222 fluorine compounds Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical class [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 abstract 1
- 235000003270 potassium fluoride Nutrition 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- KGWNTHHPMKEAIK-UHFFFAOYSA-N trifluoro(phenyl)silane Chemical compound F[Si](F)(F)C1=CC=CC=C1 KGWNTHHPMKEAIK-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/12—Organo silicon halides
- C07F7/121—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20
- C07F7/123—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20 by reactions involving the formation of Si-halogen linkages
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
The invention comprises complex salts of organo-trifluorosilanes and alkali metal or ammonium fluorides. They are prepared by the action of the organotrifluorsilanes on the alkali metal or ammonium fluoride in solid form or in solution-a neutral or weakly alkaline aqueous solution being advantageous. The trifluorosilanes may be liberated from the dry complex salts, or their solutions, by the action of heat, or, preferably, by acidification. When hydrofluoric acid is used for the acidification, the solution may be neutralized with a suitable hydroxide and recycled. Only trifluorosilanes and silicon tetrafluoride are thus absorbed, and the latter is not regenerated by acidification, so that the process of absorption and regeneration provides a convenient method for the separation and purification of organotrifluorosilanes. The dry complex salts are stable, and may be used for storage of the trifluorosilanes. The fluorides used are also fluorinating agents, so that it is possible to carry out processes of fluorination and purification in one step, excess fluoride acting as buffer for any acid formed. The examples describe the preparation of complexes of methyl - and phenyl - trifluorosilane with ammonium and potassium fluorides, in solution, and their decomposition by acidification, and by heat (Example 5). Examples 2-4 describe the purification of methyl trifluorsilane by complexing with ammonium fluoride and subsequent regeneration, and Examples 9 and 10 the purification of dimethyl difluorosilane by the removal of trifluorosilane impurities. In the latter case and in Example 4 the ammonium fluoride is also used to fluorinate the initial mixtures of chlorosilanes and chlorosiloxanes. Examples 11 and 12 describe respectively the decomposition of dry disodium methyl pentafluorosilicate and the re-use of a complexing solution acidified with HF, after neutralizing it with ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1486963A GB981268A (en) | 1963-04-16 | 1963-04-16 | Organo-trifluorosilane complexes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1486963A GB981268A (en) | 1963-04-16 | 1963-04-16 | Organo-trifluorosilane complexes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB981268A true GB981268A (en) | 1965-01-20 |
Family
ID=10048946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1486963A Expired GB981268A (en) | 1963-04-16 | 1963-04-16 | Organo-trifluorosilane complexes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB981268A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3449394A (en) * | 1967-04-06 | 1969-06-10 | Inst Silikon & Fluorkarbonchem | Process for making salts of perfluorovinyl fluorosilicic acids |
| US3517043A (en) * | 1968-07-29 | 1970-06-23 | Inst Silikon & Fluorkarbonchem | Method for the preparation of salts of organofluosilicic acids in nonaqueous solvents |
| US3525763A (en) * | 1963-04-17 | 1970-08-25 | Inst Silikon Und Fluorkarbonch | Production of salts of organofluorosilicic acids |
-
1963
- 1963-04-16 GB GB1486963A patent/GB981268A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3525763A (en) * | 1963-04-17 | 1970-08-25 | Inst Silikon Und Fluorkarbonch | Production of salts of organofluorosilicic acids |
| US3449394A (en) * | 1967-04-06 | 1969-06-10 | Inst Silikon & Fluorkarbonchem | Process for making salts of perfluorovinyl fluorosilicic acids |
| US3517043A (en) * | 1968-07-29 | 1970-06-23 | Inst Silikon & Fluorkarbonchem | Method for the preparation of salts of organofluosilicic acids in nonaqueous solvents |
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