Patent US3190902A successfully refreshed from Google Patents.
US3190902A
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Preparation of aromatic iron subgroup metal coordination compounds
Assignee: Ethyl Corp
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Filing: 1963-07-02
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Granted: 1965-06-22
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Expires: 1983-07-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Coffield
- 👤 George J Burcal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:10
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/02; C07F15/0006; C07F15/002; C07F15/0046; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
PROCESS FOR THE PREPARATION OF A BIX(AROMATIC HYDROCARBON) IRON-SUBGROUP METAL COORDINATION COMPOUND, SAID COMPOUND CONSISTING OF A CATION AND AN ANION, SAID CATION CONSISTING OF AN IRON-SUBGROUP METAL ION AND TWO AROMATIC HYDROCARBON MOLECULES BONDED TO SAID METAL ION, SAID ANION CONSISTING OF A FRIEDEL-CRAFTS CATALYST COMPLEXED WITH A NEGATIVELY CHARGED DISPROPORTIONATION PRODUCT OF AN IRON SUBGROUP METAL PENTACARBONYL, SAID NEGATIVELY CHARGED DISPROPORTIONATION PRODUCT HAVING THE FORMULA M(CO)4= WHEREIN M IS AN IRON-SUBGROUP METAL, SAID PROCESS COMPRISING REACTING: (A) AT LEAST ONE AROMATIC HYDROCARBON HAVING AN ISOLATED BENZENE NUCLEUS AND HAVING FROM 6 TO ABOUT 13 CARBON ATOMS; (B) A FRIEDEL-CRAFTS CATALYST, AND (C) AN IRON-SUBGROUP METAL PENTACARBONYL.
Claim 2
Dependent Claim
108 words
PROCESS FOR THE PREPARATION OF A BIX(AROMATIC HYDROCARBON) IRON-SUBGROUP METAL COORDINATION COMPOUND, SAID COMPOUND CONSISTING OF A CATION AND AN ANION, SAID CATION CONSISTING OF AN IRON-SUBGROUP METAL ION AND TWO AROMATIC HYDROCARBON MOLECULES BONDED TO SAID METAL ION, SAID ANION CONSISTING OF A FRIEDEL-CRAFTS CATALYST COMPLEXED WITH A NEGATIVELY CHARGED DISPROPORTIONATION PRODUCT OF AN IRON SUBGROUP METAL PENTACARBONYL, SAID NEGATIVELY CHARGED DISPROPORTIONATION PRODUCT HAVING THE FORMULA M(CO)4= WHEREIN M IS AN IRON-SUBGROUP METAL, SAID PROCESS COMPRISING REACTING: (A) AT LEAST ONE AROMATIC HYDROCARBON HAVING AN ISOLATED BENZENE NUCLEUS AND HAVING FROM 6 TO ABOUT 13 CARBON ATOMS; (B) A FRIEDEL-CRAFTS CATALYST, AND (C) AN IRON-SUBGROUP METAL PENTACARBONYL.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |