Yb(II) Triple-Decker Complex with the μ-Bridging Naphthalene Dianion [CpBn5Yb(DME)]2(μ-η4:η4-C10H8). Oxidative Substitution of [C10H8]2– by 1,4-Diphenylbuta-1,3-diene and P4 and Protonolysis of the Yb–C10H8 Bond by PhPH2
| Autor: | Georgy K. Fukin, Laurent Maron, Tatyana V. Mahrova, Carlos Alvarez Lamsfus, Evgueni Kirillov, Alexander N. Selikhov, Alexander A. Trifonov, Anton V. Cherkasov |
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| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Diene 010405 organic chemistry Ligand Organic Chemistry Protonation 010402 general chemistry Photochemistry 01 natural sciences Medicinal chemistry 0104 chemical sciences Divalent Inorganic Chemistry chemistry.chemical_compound chemistry Molar ratio Protonolysis Physical and Theoretical Chemistry Naphthalene |
| Zdroj: | Organometallics. 35:2401-2409 |
| ISSN: | 1520-6041 0276-7333 |
| DOI: | 10.1021/acs.organomet.6b00428 |
| Popis: | Two synthetic approaches to the new three-decker Yb(II) complex [CpBn5Yb(DME)]2[μ-C10H8] (1) were successfully employed: the reaction of [CpBn5Yb(DME)(μ-I)]2 (2) with 2 molar equiv of [C10H8]−·K in DME and the reaction of [YbI(DME)2]2[μ-C10H8] (3) with CpBn5K in a 1:2 molar ratio in DME. Complex 1 was proved to be a Yb(II) binuclear triple-decker complex containing a dianionic naphthalene ligand bridging two CpBn5Yb(DME) fragments in a μ-η4:η4 fashion. An oxidative substitution of (C10H8)2– by trans-(1E,3E)-1,4-diphenylbuta-1,3-diene afforded the three-decker Yb(II) complex [CpBn5Yb(DME)]2(μ-η4:η4 -PhCHCHCHCHPh) (4) with a dianionic μ-η4:η4-bridging diphenylbutadiene ligand and naphthalene. The reaction of 1 with excess P4 also occurs with oxidation of (C10H8)2–, whereas Yb remains divalent. The reaction results in the formation of the trinuclear Yb(II) complex with a μ-bridging P73– ligand [CpBn5Yb(DME)]3(P7) (5). Protonation of the Yb–C10H8 bond in 1 with PhPH2 (1:2 molar ratio) afforded the dimeric pho... |
| Databáze: | OpenAIRE |
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