ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Reactions of Carbonyl Metal Anions with Cationic Olefin Complexes: Ethylen Bridged Complexes of Molybdenum, Tungsten, and Rheniumμ 1,2-Ethanediyl-bis(metal) complexes (η5-C5H5)(CO)3MCH2CH2M(CO)3(η5-C5H5) (1a-c),(η5-C5H5) (Ph3P) (CO)2WCH2CH2W(CO)2(PPh3) (η5-C5H5) (3), (η5-C5H5) (CO)3-MCH2 CH2Re(CO)5 (4a-b), and (CO)5ReCH2Re(CO)5 (5) are obtained by nucleophile addition of the carbonylmetallates [M(CO)3(η5-C5H5)] (M = Mo, W) [W(CO)2(PPH3) (η5-C5H5)] and [Re(CO)5] to the coordinated ethylene in the cationic complexes [M(CO)3(η5-C5H5) (η2-C2H4)] + and [W(CO)2(PPh3)η5-C5H5)η2-C2 H4)]+. The structure of 5 was determined by x-ray analysis. The tropylium complexes [M(CO)3(η7-C7H4)] + react with carbonylmetallates to give carbon-carbon coupling with formation of the bi-2,4,6-cycloheptatrien-1-yl compounds (CO)3MC14H14M(CO)3 (M = Cr, Mo, W).
Notes:
Durch nucleophile Addition der Carbonylmetallate [M(CO)3(η5-C5H5)]- (M = Mo, W). [W(CO)2(PPh3)(η5-C5H5)]- und [Re(CO5] an das koordinierte Ethylen in kationischen Komplexen [M(CO)3(η5-C5H5)η2-C2H4] + und [W(CO)2 (PPh3)(η5-C5H5(η2-C2H4)]+ entstehen die μ-1-2-Ethandiyl-bis(metall)-Komplexe (η5-C5H5)(CO)3MCH2CH2M(CO)3(η5-C5H5) (1a-c),(η5-C5H5) (Ph3P) (CO)2WCH2CH2W(CO)2(PPh3) (η5-C5H5) (3) und (η5-C5H5) CO)3 MCH2CH2-Re(CO)5 (4a, b) bzw. (CO)5 ReCH2CH2CH2Re(CO)3(η7-C7H7+ (M = Cr, Mo, W) werden durch Carbonylmetallate unter C—C- Kupplung zu Bi-2,4,6-cycloheptratrien-1-Verbindungen (CO)3MC14H14M(CO)3 reduziert.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19811140305
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