Reductive degradation of Tetracobalt cluster complexes with a facial C8H8 ligand - synthesis of (Co3(CO)3([my]3-CO)3([my]3-C8H8))- and (Ru(C5Me5)Co3(CO)3([my]3-CO)3([my]3-C8H8))

• Verfasst von: Wadepohl, Hubert [VerfasserIn]
• Verfasst von: Gebert, Stefan [VerfasserIn]
• Verfasst von: Merkel, Rüdiger [VerfasserIn]
• Verfasst von: Pritzkow, Hans [VerfasserIn]
• Titel: Reductive degradation of Tetracobalt cluster complexes with a facial C8H8 ligand - synthesis of (Co3(CO)3([my]3-CO)3([my]3-C8H8))- and (Ru(C5Me5)Co3(CO)3([my]3-CO)3([my]3-C8H8))
• Verf.angabe: Hubert Wadepohl, Stefan Gebert, Rüdiger Merkel, and Hans Pritzkow
• Umfang: 6 S.
• Fussnoten: Gesehen am 25.01.2019 ; Im Titel sind die Zahlen 3, 5 und 8 tiefgestellt. ; Im Titel ist [μ] als griechischer Buchstabe dargestellt.
• Titel Quelle: Enthalten in: European journal of inorganic chemistry
• Jahr Quelle: 2000
• Band/Heft Quelle: (2000), 4, S. 783-788
• ISSN Quelle: 1099-0682
• DOI: doi:10.1002/(SICI)1099-0682(200004)2000:4<783¬AID-EJIC783>3.0.CO;2-J
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1586587706

Abstract

Chemical reduction of the cluster complexes [Co4(CO)3(μ3-CO)3(μ3-C8H8)L2] 3 (L2 = C8H8), 4 (L = CO), 5 (L2 = C6H8) and 6 (L2 = 6,6-Ph2C6H4) gives the trinuclear anion [Co3(CO)3(μ2-CO)3(μ3-C8H8)]- (7) in high yield. It is proposed that formation of 7 occurs via degradation of the radical anions [3]- - [6]-, which can be generated reversibly via cyclic voltammetry. The anion 7 is stabilised by the facial C8H8 ligand and does not degrade further. Reaction of 7 with [(C5Me5)Ru(NCMe)3][BF4] results in the formation of [Ru(C5Me5)Co3(CO)3(μ3-CO)3(μ3-C8H8)] (8). The crystal structures of [NEt4]+-7, [(C5H5)2Co]+-7, and 8 were determined. In 7 and 8, the cyclooctatetraene ligand is coordinated to the Co3 face of the cluster in the facial mode.