Cationic rare-earth-metal methyl complexes: a new preparative access exemplified for Y and Pr

Nieland A, Mix A, Neumann B, Stammler H-G, Mitzel NW (2010)
DALTON TRANSACTIONS 39(29): 6753-6760.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
Abstract / Bemerkung
A new procedure for the generation of cationic methyl complexes of rare-earth metals has been developed for yttrium and praseodymium as two examples from the rare-earth series. The reactions of the rare-earth-metal tetramethylaluminates [Ln(AlMe4)(3)] of yttrium and praseodymium with three differently sized crown ethers in thf, namely [12]crown-4, [15]crown-5 and [18]crown-6, respectively, led to the compounds [YMe([12]crown-4)(2)](2+)[AlMe4](-)(2) (1), [PrMe([12]crown-4)(2)](2+)[AlMe4](-)(2) (2), [YMe([15]crown-5)(thf)(2)](2+)[AlMe4](-)(2) (3), [Pr([15]crown-5)(2)](3+)[AlMe4](-)(3) (4), [YMe([18]crown-6)(thf)](2+)[AlMe4](-)(2) (5) and [PrMe([18]crown-6)(thf)(2)](2+) [AlMe4](-)(2) (6). With the exception of 4, all compounds contain molecular di-cations with a Ln-CH3 unit bonded to one (3, 4, 6) or two (1, 2) crown-ether molecules. The compounds were characterised by determination of their crystal structures, by elemental analyses and in the case of the yttrium compounds by variable temperature NMR spectroscopy. The latter gives insights into molecular dynamic processes and methyl group exchange between cations and anions in solution.
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DALTON TRANSACTIONS
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39
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29
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6753-6760
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Nieland A, Mix A, Neumann B, Stammler H-G, Mitzel NW. Cationic rare-earth-metal methyl complexes: a new preparative access exemplified for Y and Pr. DALTON TRANSACTIONS. 2010;39(29):6753-6760.
Nieland, A., Mix, A., Neumann, B., Stammler, H. - G., & Mitzel, N. W. (2010). Cationic rare-earth-metal methyl complexes: a new preparative access exemplified for Y and Pr. DALTON TRANSACTIONS, 39(29), 6753-6760. doi:10.1039/c002252g
Nieland, A., Mix, A., Neumann, B., Stammler, H. - G., and Mitzel, N. W. (2010). Cationic rare-earth-metal methyl complexes: a new preparative access exemplified for Y and Pr. DALTON TRANSACTIONS 39, 6753-6760.
Nieland, A., et al., 2010. Cationic rare-earth-metal methyl complexes: a new preparative access exemplified for Y and Pr. DALTON TRANSACTIONS, 39(29), p 6753-6760.
A. Nieland, et al., “Cationic rare-earth-metal methyl complexes: a new preparative access exemplified for Y and Pr”, DALTON TRANSACTIONS, vol. 39, 2010, pp. 6753-6760.
Nieland, A., Mix, A., Neumann, B., Stammler, H.-G., Mitzel, N.W.: Cationic rare-earth-metal methyl complexes: a new preparative access exemplified for Y and Pr. DALTON TRANSACTIONS. 39, 6753-6760 (2010).
Nieland, Anja, Mix, Andreas, Neumann, Beate, Stammler, Hans-Georg, and Mitzel, Norbert W. “Cationic rare-earth-metal methyl complexes: a new preparative access exemplified for Y and Pr”. DALTON TRANSACTIONS 39.29 (2010): 6753-6760.

8 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

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Yttrium Siloxide Complexes Bearing Terminal Methyl Ligands: Molecular Models for Ln-CH3 Terminated Silica Surfaces.
Dettenrieder N, Dietrich HM, Maichle-Mössmer C, Anwander R., Chemistry 22(37), 2016
PMID: 27492852
κ²-Coordination of 18-crown-6 to Ce(III) cations: solution dynamics and reactivity.
Yin H, Robinson JR, Carroll PJ, Walsh PJ, Schelter EJ., Chem Commun (Camb) 50(26), 2014
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Rare-earth-metal dialkynyl dimethyl aluminates.
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