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Rare-earth amidate complexes. Easily accessed initiators for epsilon-caprolactone ring-opening polymerization

TitleRare-earth amidate complexes. Easily accessed initiators for epsilon-caprolactone ring-opening polymerization
Publication TypeJournal Article
Year of Publication2008
AuthorsStanlake, LJE, Beard, JD, Schafer, LL
JournalInorganic Chemistry
Volume47
Pagination8062-8068
Date PublishedSep
Type of ArticleArticle
ISBN Number0020-1669
KeywordsBETA-DIKETIMINATE, BIS(AMIDATE) TITANIUM PRECATALYST, CATALYTIC-ACTIVITY, COMPLEXES, LANTHANIDE, METHYL-METHACRYLATE, MOLECULAR-STRUCTURES, N, ORGANOLANTHANIDE, PHENYL ISOCYANATE, RAY CRYSTAL-STRUCTURES, SIGMA-BOND
Abstract

{The direct synthesis of yttrium amidate complexes using the simple reaction of amide proligands and Y(N(SiMe3)(2))(3) results in the high-yielding preparation and isolation of crystalline, monomeric materials. The complex, tris(N-2’,6’-diisopropylphenyl(naphthyl)amidate)yttrium mono(tetrahydrofuran) (4), was structurally determined to be a 7-coordinate C, symmetric structure, maintaining one bound tetrahydrofuran molecule. Compound 4 (C12H17[NCO]C10H1)(3)Y(C4H8O) crystallized in the monoclinic space group P2(1)/c with a = 13.7820(11) angstrom

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