Synthesis, structure, and properties of rare earth chloride complexes {[Ap´Y(THF)](μ2-Cl)2(μ3-Cl)Li(THF)}2, {[Ap9MeLn(THF)](μ2-Cl)3Li(THF)2}2 (Ln = Y, Nd, Sm), and {[ApLn(THF)](μ2-Cl)3Li(THF)2}2 (Ln = Nd, Sm) containing amidopyridinate ligands

• Published in: Russian chemical bulletin 2015-03, Vol.64 (3), p.618-625
• Main Authors: Lyubov, D. M., Rad´kov, V. Yu, Tolpygin, A. O., Cherkasov, A. V., Fukin, G. K., Trifonov, A. A.
• Format: Article
• Language: English
• Subjects: Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Full Articles; Inorganic Chemistry; Organic Chemistry
• ISSN: 1066-5285; 1573-9171
• DOI: 10.1007/s11172-015-0908-4

New amidopyridinate chloride complexes {[Ap´Y(THF)](μ 2 -Cl) 2 (μ 3 -Cl)Li(THF)} 2 , {[Ap 9Me Ln(THF)](μ 2 -Cl) 3 Li(THF) 2 } 2 (Ln = Y, Nd, Sm), and {[Ap*Ln(THF)](μ 2 -Cl) 3 Li(THF) 2 } 2 (Ln = Nd, Sm) were synthesized by the exchange reactions of lithium amidopyridinates ApLi(OEt 2 ) (Ap´ is N -(2,6-diisopropylphenyl)-6-(2,6-dimethylphenyl)pyridine-2-amine; Ap9Me is N-mesityl-6-(2,4,6-triisopropylphenyl)pyridine-2-amine; Ap* is N-(2,6-diisopropylphenyl)-6-(2,4,6-triisopropylphenyl)pyridine-2-amine) with anhydrous rare earth chlorides. The X-ray diffraction study showed that the amidopyridinate chloride derivatives are heterobimetallic ate -complexes, in which two rare earth metal atoms are linked by bridging chloride ligands and bridging Cl—Li—Cl groups. The three-component system {[Ap*Nd(THF)](μ 2 -Cl) 3 Li(THF) 2 } 2 —AlBu i 3 —[Ph 3 C][B(C 6 F 5 ) 4 ] (1: 10: 1 molar ratio) catalyzes the isoprene polymerization.