2015
DOI: 10.1039/c5nj00409h
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Heterometallic rare-earth metal complexes with imino-functionalized 8-hydroxyquinolyl ligands: synthesis, characterization and catalytic activity towards hydrophosphinylation of trans-β-nitroalkene

Abstract: Reactions of rare-earth metal amides [(Me 3 Si) 2 N] 3 RE(m-Cl)Li(THF) 3 with different equiv. of 2-(2,6-diisopropylphenylimino)-8-hydroxyquinoline (1) afforded different heterometallic rare-earth metal complexes, and catalytic activity of the resulting complexes was investigated. Reactions of rare-earth metal amides [(Me 3 Si) 2 N] 3 RE(m-Cl)Li(THF) 3 (RE = Y, Er, Dy) with 1 equiv. of compound 1 afforded the heterobimetallic rare-earth metal and lithium complexes 2-4 bridged by the oxygen atom of 2-(2,6-diiso… Show more

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Cited by 10 publications
(5 citation statements)
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“…44,45 Previous studies on catalysis mainly focused on precious metals and rare-earth metals. [46][47][48][49] Recently, the reactions catalyzed by sand p-block metals showed the potential for further growth in this area. 50,51 Due to the nontoxicity, environment friendliness, relative inexpensiveness and high abundance of copper, [52][53][54][55] hydrophosphination reactions have been performed using copper salts, 56 copper photocatalysts, 57,58 copper complexes supported by NHC (N-heterocyclic carbene) [59][60][61] and phosphine ligands.…”
Section: Introductionmentioning
confidence: 99%
“…44,45 Previous studies on catalysis mainly focused on precious metals and rare-earth metals. [46][47][48][49] Recently, the reactions catalyzed by sand p-block metals showed the potential for further growth in this area. 50,51 Due to the nontoxicity, environment friendliness, relative inexpensiveness and high abundance of copper, [52][53][54][55] hydrophosphination reactions have been performed using copper salts, 56 copper photocatalysts, 57,58 copper complexes supported by NHC (N-heterocyclic carbene) [59][60][61] and phosphine ligands.…”
Section: Introductionmentioning
confidence: 99%
“…Rare-earth-metal complexes have been successfully used as catalysts or precatalysts in a range of chemical transformations, including various types of polymerization and copolymerization, hydroamination, hydrosilylation, hydroboration, hydroalkoxylation, hydrothiolation, , and hydrophosphination. , Organolanthanide-catalyzed hydrophosphination was focused on the area of intramolecular hydrophosphination/cyclization of alkenes and alkynes and intermolecular hydrophosphination of alkenes and alkynes. , Rare-earth-metal amido complex promoted intermolecular hydrophosphination of heterocumulenes has still been poorly investigated …”
Section: Introductionmentioning
confidence: 99%
“…Although no X-ray-diffraction-quality crystals were obtained for the [OC 4 F 9 ] − complexes 2-Ln (Ln = Eu, Gd, Dy), ESI-MS data are consistent with the assigned formulas for all. On the basis of the photoluminescence data (vide infra) and scarcity of nonpolymeric four-coordinate complexes of Eu, Gd, , and Dy ,, in the literature, it is proposed that 2-Ln also bears two THF ligands, as seen in 1-Ln , such that the solution structures are six-coordinate. In the absence of crystallographic data for 2-Ln , it is unknown whether the symmetry observed in 1-Ln , which results in only three unique Ln–O distances per complex, is maintained.…”
Section: Resultsmentioning
confidence: 99%
“…HOC 4 F 9 (66 μL, 0.47 mmol) in Et 2 O (5 mL) was added dropwise and allowed to stir at room temperature. After 4 days, the solvent was removed under vacuum and the resulting solids were dissolved in minimal THF, filtered into a vial, and chilled at −35 °C for 1 h. The solution was layered with room temperature hexane and stored at −35 °C, producing colorless crystals over 6 days (105 [K(THF) 2 ][Ce(pin F ) 2 (THF) 3 ] (3-Ce). A solution of KN(SiMe 3 ) 2 (160 mg, 0.802 mmol) and H 2 pin F (287 μL, 1.61 mmol) in THF (5 mL) was added to a stirred yellow solution of Ce[N(SiMe 3 ) 2 ] 3 (500 mg, 0.805 mmol) in THF (5 mL), causing a color change to amber, and stirred overnight.…”
Section: ■ Introductionmentioning
confidence: 99%