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Dalton Trans. 2009 Aug 7;(29):5715-9. doi: 10.1039/b904538d. Epub 2009 Jun 9.

Bis(hydroxylaminato)-mono(pentamethylcyclopentadienyl) rare-earth metal complexes.

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Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615, Bielefeld, Germany.


Salt metathesis reactions involving the anhydrous rare-earth metal trichlorides MCl(3) (M = Y, Ho, Er and Lu) and the N,N-diethylhydroxylaminato potassium salt, KONEt(2) (1), and KC(5)Me(5) result in formation of rare-earth metal hydroxylaminato complexes of the type [(C(5)Me(5))M(mu-eta(1):eta(2)-ONEt(2))(eta(2)-ONEt(2))](2) (M = Y (2a), Ho (2b), Er (2c) and Lu (2d)). Compound 1 was characterised by elemental analysis, compounds 2a and 2d by NMR spectroscopy and compounds 2a-d by elemental analyses, mass-spectrometry and single crystal X-ray diffraction. Compounds 2a-d are isostructural in the solid state. Effective saturation of the coordination sphere of the rare-earth metal atoms by the hydroxylaminato groups is achieved by the formation of three-membered MON rings.


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