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US4464233A
Expired / Lapsed
US
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Preparation of adducts which may be used in the preparation of compound semiconductor materials
Assignee: UK Secretary of State for Defence
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Filing: 1982-11-22
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Granted: 1984-08-07
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Expires: 2002-11-22
Abstract
Abstract A method of producing an adduct of an organometallic compound M1(R1)x, where M1 is a Group II or Group III metallic element and R1)x represents a plurality of organic radicals, which may be the same or different, x being an integer equal to the valency of M1, comprises electrolysing, using a sacrificial anode of the metal M1, a solution containing components A, B and C as follows: A: a magnesium compound MgR21; B: a readily ionizable support electrolyte providing relatively large anions and cations; C: a polar aprotic liquid which is a solvent for both components A and B; the metal M1 being selected from the group consisting of: indium, gallium, cadmium.
Inventors
- 👤 John B. Mullin
- 👤 Arthur K. Holliday
- 👤 David J. Cole-Hamilton
- 👤 Anthony C. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:58
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02; C07F5/00; C25; C25B; C25B3/00; C25B3/01; C25B3/13
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
A method of producing an adduct of an organometallic compound M 1 (R 1 ) 3 where M 1 is a Group III metallic element selected from indium and gallium and (R 1 ) 3 represents a plurality of alkyl radicals having from 1 to 7 carbon atoms, which radicals may be the same or different, which method comprises electrolysing, using a sacrificial anode of the metal M 1 , a solution containing components A, B, and C as follows: A: at least one magnesium dialkyl compound Mg(R 1 ) 2 ; B: a readily ionisable support electrolyte providing relatively large anions and cations; and C: a polar aprotic liquid which is a solvent for both components A and B.
Claim 2
Independent Claim
120 words
A method of producing an adduct of an organometallic compound M 1 (R 1 ) 3 where M 1 is a Group III metallic element selected from indium and gallium and (R 1 ) 3 represents a plurality of alkyl radicals having from 1 to 7 carbon atoms, which radicals may be the same or different, which method comprises electrolysing, using a sacrificial anode of the metal M 1 , a solution containing components A, B, and C as follows: A: at least one magnesium dialkyl compound Mg(R 1 ) 2 ; B: a readily ionisable support electrolyte providing relatively large anions and cations; and C: a polar aprotic liquid which is a solvent for both components A and B.
Claim 3
Dependent Claim
21 words
A method as claimed in claim 1, wherein the groups R 1 in (R 1 ) 3 are the same groups.
Claim 4
Dependent Claim
18 words
A method as claimed in claim 2 and wherein the groups R 1 are methyl or ethyl groups.
Claim 5
Dependent Claim
40 words
A method as claimed in claim 1 and wherein the relative molar proportions of components A, B and C are a:b:c respective where a is between about 1 and about 10, b is about 1 and c is about 400.
Claim 6
Dependent Claim
80 words
A method as claimed in claim 1 and wherein the support electrolyte, component B, is a salt providing cations of the form R 1 R 2 R 3 R 4 Z + where Z is a group V element, each of R 1 , R 2 , R 3 and R 4 independently represents hydrogen or an organic radical with the proviso that at lease two of R 1 , R 2 , R 3 and R 4 are radicals.
Claim 7
Dependent Claim
38 words
A method as claimed in claim 5 and wherein the anion provided by the support electrolyte is of the following: (i) ClO 4 - (ii) PF 6 - (iii) AsF 6 - (iv) (iv) SbF 6 - .
Claim 8
Dependent Claim
20 words
A method as claimed in claim 6 and wherein the support electrolyte is selected from tetramethylammonium perchlorate and tetraethylammonium perchlorate.
Claim 9
Dependent Claim
35 words
A method as claimed in claim 1 and wherein the polar aprotic liquid, component C, is selected from the following solvents or mixtures thereof: tetrahydrofuran, dioxan, N-methyl pyrollidone, dipropyl ether, acetonitrile, nitromethane and propylene carbonate.
Claim 10
Dependent Claim
26 words
A method as claimed in claim 1 and wherein the adduct formed by the method is a 1:1 adduct of tetrahydrofuran and a trialkyl-indium or -gallium.
References Cited (Backward Citations)
US3391066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |