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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 606 (1991), S. 141-155 
    ISSN: 0044-2313
    Keywords: Neopentylruthenium(II) complexes ; H—C bond cleavage ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: H—C Bond Cleavage in Aldehydes by Neopentylruthenium(II) ComplexesNeopentylruthenium complexes of the type (η5-Cp)(L1)(L2)RuCH2CMe3 (1: Cp = C5Me5, L1 = L2 = PMe3; 3, 9, 10 and 11: Cp = C5H5, L2 = PPh3, L1 = PMe3, PMePh2, PMe2Ph and P(OMe)3, respectively) react with benzaldehyde with H—C bond cleavage of the aldehyde function to give the (η5-Cp)(L1)(L2)Ru benzoyl compounds 4, 13-16 and as the result of subsequent decarbonylation the (carbonyl) phenylruthenium complexes 2, 5, 12, 17-19 or mixtures thereof. Para phthaldialdehyde reacts with 1 (ratio 1 : 2) via the carbonyl complex 20 to give the 1,4-bis(ruthenium)benzene compound 21. Aliphatic aldehydes behave similarly: isobutyraldehyde reacts with 3 to give a mixture of the acyl-(22) and alkyl(carbonyl)ruthenium compound 23. 1 reacts with ferrocenealdehyde to give the carbonyl(ferrocenyl)ruthenium complex 25. The molecular structures of 22 and 2 as representatives of acyl- and (carbonyl)organylruthenium complexes, have been determined by X-ray diffraction.
    Notes: Die Neopentylruthenium-Komplexe vom Typ (η5-Cp)(L1)(L2)RuCH2CMe3 (1: Cp = C5Me5, L1 = L2 = PMe3; 3, 9, 10 und 11: Cp = C5H5, L2 = PPh3, L1 = PMe3, PMePh2, PMe2Ph bzw. P(OMe)3) reagieren mit Benzaldehyd unter H—C-Bindungsspaltung an der Aldehydgruppe und anschließender Decarbonylierung zu den entsprechenden Phenylruthenium-Verbindungen (η5-Cp)(CO)(L1)RuPh 2, 5, 12, 17-19 oder zu Mischungen dieser Komplexe mit den Benzoylruthenium-Verbindungen (η5-Cp)(L1)(L2)RuC(O)Ph 4, 13-16, den Vorstufen der Decarbonylierung. Para-Phthaldialdehyd reagiert mit 1 (Verhältnis 1 : 2) über den Carbonylkomplex 20 zum 1,4-Bis(ruthenium)benzol 21. Aliphatische Aldehyde verhalten sich ähnlich wie aromatische, Isobutyraldehyd bildet mit 3 eine Mischung von Acyl- (22) und Alkyl(carbonyl)ruthenium-Verbindung 23. 1 reagiert mit Ferrocenaldehyd zum Carbonyl(ferrocenyl)ruthenium-Komplex 25. Für 22 und 2 als Vertreter der Acyl- und der (Carbonyl)phenylruthenium-Komplexe wurden die Molekülstrukturen röntgenographisch bestimmt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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