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US3597461A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydride and carbonyl triphenylphosphine derivatives of ruthenium and osmium

Assignee: Wyeth Holdings LLC
•
Filing: 1968-08-13
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Granted: 1971-08-03
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Expires: 1988-08-13
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Abstract

Abstract PENTACOORDINATE COMPLEXES OF RUTHENIUM AND OSMIUM OF THE GENERAL FORMULA M(CO)S-N(P(C6H5)3)N M=RU, OS, N=1,2, ARE PREPARED BY REACTING THE CORRESPONDING PENTACARBONYLS WITH TRIPHENYLPHOSPHINE. ALSO DIHYDRIDO COMPOUNDS OF FORMULA MH2(CO)2(P(C6H5)2)2 (M=RU, OS) ARE DESCRIBED. THESE DIHYDRIO DERIVATIVES CAN BE PRODUCED BY REACTING THE CORRESPONDING TRICARBONYLBIS (TRIPHENYLPHOSHINE) COMPOUNDS, M(CO)3(P(C6H5)2)2, WITH HYDROGEN. ALSO THE PREPARATION OF OSH2(CO)2P(C6H5)3 FROM OS(CO)4P(C6H5)O AND HYDROGEN IS DICLOSED IN THE PRESENT INVENTION. THE TETRACARBONYL COMPOUNDS M(CO)4P(C5H5)2 AND THE DIHYDRIDO COMPOUNDS MH2(CO)2(P(C6H5)2)2 ARE NEW CHEMICAL COMPOUNDS. THE COMPOUNDS HAVE UTILITY AS HYDROGENATION CATALYSTS.

Inventors

  • 👤 Francois L Eplattenier
  • 👤 Fausto Calderazzo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 04:23
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/24; B01J31/2404; B01J31/20; C; C07; C07F; C07F15/00; C07F15/0006; C07F15/002; C07F15/0026; C07F15/0046; C07F15/0053; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/821; B01J2531/825

Claims Analysis

Total Claims: 0
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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) 1974-08-02 1975-02-01 1975-08-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-08-02 1979-02-01 1979-08-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-08-02 1983-02-01 1983-08-03 $7700.00 Window Closed / Lapsed

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