US4144259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organophosphorus nickel complexes and use thereof
Assignee: Phillips Petroleum Co
•
Filing: 1977-12-08
•
Granted: 1979-03-13
•
Expires: 1997-12-08
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
2026-11-04 23:17
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: 9
Claim 1
Independent Claim
1 words
Tris(triethylphosphine)(triphenylphosphine)nickel(0).
Claim 2
Dependent Claim
1 words
Tris(triethylphosphine)(triphenylphosphine)nickel(0).
Claim 3
Dependent Claim
25 words
A process of preparing tris(triethylphosphine)(triphenylphosphine)nickel(0) comprising reacting suitable amounts of tetrakis(triethylphosphine)nickel(0) and triphenylphosphine in a suitable diluent at suitable reaction conditions under an inert atmosphere.
Claim 4
Dependent Claim
25 words
A process of preparing tris(triethylphosphine)(triphenylphosphine)nickel(0) comprising reacting suitable amounts of tetrakis(triethylphosphine)nickel(0) and triphenylphosphine in a suitable diluent at suitable reaction conditions under an inert atmosphere.
Claim 5
Dependent Claim
24 words
A process according to claim 2 wherein the diluent is diethyl ether and the mole ratio of said tetrakis(triethylphosphine)nickel(0) to triphenylphosphine is about 1:1.
Claim 6
Dependent Claim
14 words
A process according to claim 3 wherein the reaction temperature is about 25° C.
Claim 7
Dependent Claim
39 words
A process according to claim 2 wherein the mole ratio of triphenylphosphine to tetrakis(triethylphosphine)nickel(0) is in the range of about 0.1:1 to about 1:0.1 and the reaction temperature is in the range of about -50° to about 100° C.
Claim 8
Dependent Claim
15 words
A process according to claim 2 wherein tris(triethylphosphine)(triphenylphosphine)nickel(0) is recovered from the reaction product mixture.
Claim 9
Dependent Claim
21 words
A process according to claim 6 wherein said diluent is diethyl ether and said tris(triethylphosphine)(triphenylphosphine)nickel(0) is recovered by precipitation and filtration.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |