US3966595A
Expired / Lapsed
US
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Method of making group VIII metal complex compounds
Assignee: EIDP Inc
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Filing: 1974-05-10
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Granted: 1976-06-29
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Expires: 1994-05-10
Abstract
Abstract Reverse osmosis is employed to remove neutral ligands (usually phosphines, phosphites, stibines or arsines) from solutions of dissociable Group VIII metal complexes whereby a ligand-deficient reactive complex (which may be further reacted) is obtained. The products are useful as catalysts and as absorbants for carbon monoxide or acetylene.
Inventors
- 👤 Lawrence W. Gosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:10
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/02; B01D61/025; B01D53/00; B01D53/14; B01D53/1493; C; C07; C07C; C07C45/00; C07C45/78; C07C45/786; C07F; C07F15/00; C07F15/0006; C07F15/0046; C07F15/0053
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
124 words
A method of making ligand deficient Group VIII metal complex compounds which comprises: contacting a solution containing a dissociable complex of a Group VIII metal having at least one reversibly dissociable neutral ligand of the formula: L.sub.x MY.sub.z wherein M is a Group VIII metal, L is a neutral dissociable ligand, the Y's, alike or different, are anionic ligands or noncoordinated counter-ions, x is 3 to 6 inclusive, and z is 0 to 3 inclusive with an asymmetric semipermeable membrane consisting essentially of an aromatic polymer having recurring ##EQU7## groups in the polymer chain, said membrane being permeable to said dissociated ligand, and applying to the solution pressure greater than the osmotic pressure of said solution whereby dissociated ligand is separated from said solution.
Claim 2
Independent Claim
124 words
A method of making ligand deficient Group VIII metal complex compounds which comprises: contacting a solution containing a dissociable complex of a Group VIII metal having at least one reversibly dissociable neutral ligand of the formula: L.sub.x MY.sub.z wherein M is a Group VIII metal, L is a neutral dissociable ligand, the Y's, alike or different, are anionic ligands or noncoordinated counter-ions, x is 3 to 6 inclusive, and z is 0 to 3 inclusive with an asymmetric semipermeable membrane consisting essentially of an aromatic polymer having recurring ##EQU7## groups in the polymer chain, said membrane being permeable to said dissociated ligand, and applying to the solution pressure greater than the osmotic pressure of said solution whereby dissociated ligand is separated from said solution.
Claim 3
Dependent Claim
74 words
Method of claim 1 wherein L is PR 3 , AsR 3 , SbR 3 ,P(OR) 3 , RP(OR) 2 , R 2 P(OR) or R 2 P(NR 2 1 ), in which R and R 1 , alike or different, are hydrocarbyl radicals of up to 12 carbon atoms having up to three substituents selected from the group aryloxy, lower alkoxy, lower alkoxycarbonyl, lower acyloxy, lower alkanesulfonyl, lower acyl, fluorine, chlorine and cyano.
Claim 4
Dependent Claim
11 words
Method of claim 2 wherein the ligand is PR 3 .
Claim 5
Dependent Claim
8 words
Method of claim 2 wherein the ligand is
Claim 6
Dependent Claim
14 words
Method of claim 1 wherein said dissociable complex has the formula [(o-tolyl-O-).sub.3 P].sub.4 Ni.
Claim 7
Dependent Claim
15 words
Method of claim 1 wherein said dissociable complex has the formula [(C.sub.6 H.sub.5).sub.3 P].sub.4 RuH.sub.2.
Claim 8
Dependent Claim
23 words
Method of claim 1 wherein said dissociable complex has the formula [(C.sub.6 H.sub.5).sub.3 P].sub.4 RuCl.sub.2, and the solution is pressured with nitrogen gas.
Claim 9
Dependent Claim
26 words
Method of claim 1 wherein said dissociable complex has the formula [(C.sub.6 H.sub.5).sub.3 P].sub.3 Ru(H)[N.sub.3 (C.sub.6 H.sub.5).sub.2 ] and the solution is pressured with nitrogen gas.
Claim 10
Dependent Claim
29 words
The method of claim 1 wherein the membrane is an aromatic polymer having recurring arylene groups connected by imide, amide, hydrazide or acyl hydrazide linkages in the polymer chain.
Claim 11
Dependent Claim
17 words
The method of claim 9 in which the membrane is prepared from pyromellitic dianhydride and p,p'-diaminodiphenyl ether.
Claim 12
Dependent Claim
16 words
The method of claim 9 in which the membrane is prepared from m-phenylenediamine and isophthaloyl chloride.
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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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |