Preparation of Si—H containing iodosilanes via halide exchange reaction
US-10384944-B2 · Aug 20, 2019 · US
Method of preparing iodosilanes and compositions therefrom
US12459824B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12459824-B2 |
| Application number | US-202418752725-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 24, 2024 |
| Priority date | Apr 24, 2020 |
| Publication date | Nov 4, 2025 |
| Grant date | Nov 4, 2025 |
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Abstract
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Provided are complexes useful in the conversion of chloro- and bromo-silanes to highly desired iodosilanes such as H 2 SiI 2 and HSiI 3 , via a halide exchange reaction. The species which mediates this reaction is an iodide reactant comprising aluminum.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A composition comprising: SiH 2 I 2 ; SiH 2 Cl 2 ; SiH 2 (Cl)(I); and an aluminum containing catalyst. 2 . The composition of claim 1 wherein the composition is neat. 3 . The composition of claim 1 , comprising an aprotic solvent. 4 . The composition of claim 1 , wherein the SiH 2 I 2 makes up at least 92 mol % of the all silicon containing species in the composition. 5 . A composition consisting of: SiH 2 I 2 ; SiH 2 Cl 2 ; SiH 2 (Cl)(I); an aluminum containing catalyst; and optionally an aprotic solvent. 6 . The composition of claim 1 , wherein the aluminum containing catalyst comprises LiAl(I) 4 . 7 . The composition of claim 1 , wherein the aluminum containing catalyst comprises AlX 3 , where X is a halide. 8 . The composition of claim 1 , wherein the aluminum containing catalyst is formed in situ using aluminum metal. 9 . The composition of claim 1 , further comprising a magnesium halide. 10 . The composition of claim 5 , wherein the composition is neat. 11 . The composition of claim 5 , wherein the composition includes an aprotic solvent. 12 . The composition of claim 5 , wherein the aluminum containing catalyst comprises LiAl(I) 4 . 13 . The composition of claim 5 , wherein the aluminum containing catalyst comprises AlX 3 , where X is a halide. 14 . The composition of claim 5 , wherein the aluminum containing catalyst is formed in situ using aluminum metal. 15 . A composition consisting of: SiH 2 I 2 ; SiH 2 Cl 2 ; SiH 2 (Cl)(I); an aluminum containing catalyst; a magnesium halide; and optionally an aprotic solvent. 16 . The composition of claim 15 , wherein the composition is neat. 17 . The composition of claim 15 , wherein the composition includes an aprotic solvent.
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Classifications
Halogenated silanes obtained by disproportionation and molecular rearrangement of halogenated silanes · CPC title
by reactions involving the formation of Si-halogen linkages · CPC title
- C01B33/107Primary
Halogenated silanes · CPC title
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- What does patent US12459824B2 cover?
- Provided are complexes useful in the conversion of chloro- and bromo-silanes to highly desired iodosilanes such as H 2 SiI 2 and HSiI 3 , via a halide exchange reaction. The species which mediates this reaction is an iodide reactant comprising aluminum.
- Who is the assignee on this patent?
- Entegris Inc
- What technology area does this patent fall under?
- Primary CPC classification C01B33/107. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 04 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).