Patent US4118408A successfully refreshed from Google Patents.
US4118408A
Expired / Lapsed
US
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Organophosphorus nickel complexes and preparation thereof
Assignee: Phillips Petroleum Co
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Filing: 1976-05-07
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Granted: 1978-10-03
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Expires: 1996-05-07
Abstract
Abstract The preparation and use of bis(μ-diphenylphosphido)tris(triethylphosphine)dinickel and tris(triethylphosphine)(triphenylphosphine)nickel is disclosed.
Inventors
- 👤 Darryl R. Fahey
- 👤 John E. Mahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:30
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07F15/00; C07F15/04; C07F15/045; C07C2531/00; C07C2531/16; C07C2531/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
1 words
Bis(μ-diphenylphosphido)tris(triethylphosphine)dinickel.
Claim 2
Dependent Claim
1 words
Bis(μ-diphenylphosphido)tris(triethylphosphine)dinickel.
Claim 3
Dependent Claim
51 words
A process of preparing bis(μ-diphenylphosphido)tris(triethylphosphine)dinickel, a dinickel complex comprising placing tris(triethylphosphine)(triphenylphosphine)nickel(O) in a suitable diluent to form a mixture under an inert atmosphere at a pressure such that the diluent is maintained essentially in the liquid phase while said mixture is maintained at a temperature sufficient to yield said dinickel complex.
Claim 4
Dependent Claim
51 words
A process of preparing bis(μ-diphenylphosphido)tris(triethylphosphine)dinickel, a dinickel complex comprising placing tris(triethylphosphine)(triphenylphosphine)nickel(O) in a suitable diluent to form a mixture under an inert atmosphere at a pressure such that the diluent is maintained essentially in the liquid phase while said mixture is maintained at a temperature sufficient to yield said dinickel complex.
Claim 5
Dependent Claim
35 words
A process according to claim 2 wherein the temperature is in the range of about 25° to about 175° C and the reaction time is in the range of about 0.1 to about 100 hours.
Claim 6
Dependent Claim
23 words
A process according to claim 3 wherein the diluent is selected from at least one aliphatic hydrocarbon having 5 to 10 carbon atoms.
Claim 7
Dependent Claim
19 words
A process according to claim 4 wherein the temperature is in the range of about 60° to 130° C.
Claim 8
Dependent Claim
14 words
A process according to claim 5 wherein the inert atmosphere is provided by argon.
Claim 9
Dependent Claim
11 words
A process according to claim 6 wherein the diluent is n-hexane.
Claim 10
Dependent Claim
62 words
A process according to claim 7 wherein the bis(μ-diphenylphosphido)tris(triethylphosphine)dinickel is recovered by cooling the reaction mixture under an inert atmosphere until said dinickel complex precipitates, separating the resulting precipitate by filtration under an inert atmosphere, washing the thus-separated precipitate under an inert atmosphere under conditions which minimize the dissolving of said precipitate, and finally drying the thus-washed precipitate under an inert atmosphere.
Claim 11
Dependent Claim
42 words
A process according to claim 2 wherein the bis(μ-diphenylphosphido)tris(triethylphosphine)dinickel is recovered by cooling the reaction mixture under an inert atmosphere until said dinickel complex precipitates, separating the precipitate by filtration under an inert atmosphere, and drying the precipitate under an inert atmosphere.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |