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  3. HEPTADENTATE LIGANDS FOR THE LANTHANIDES - THE 1ST STRUCTURALLY CHARACTERIZED EXAMPLE OF A LANTHANIDE HEPTADENTATE LIGAND COMPLEX - (TRIS(3-AZA-4-METHYL-6-OXOHEPT-4-EN-1-YL)AMINE)YTTERBIUM(III)

HEPTADENTATE LIGANDS FOR THE LANTHANIDES - THE 1ST STRUCTURALLY CHARACTERIZED EXAMPLE OF A LANTHANIDE HEPTADENTATE LIGAND COMPLEX - (TRIS(3-AZA-4-METHYL-6-OXOHEPT-4-EN-1-YL)AMINE)YTTERBIUM(III)

TitleHEPTADENTATE LIGANDS FOR THE LANTHANIDES - THE 1ST STRUCTURALLY CHARACTERIZED EXAMPLE OF A LANTHANIDE HEPTADENTATE LIGAND COMPLEX - (TRIS(3-AZA-4-METHYL-6-OXOHEPT-4-EN-1-YL)AMINE)YTTERBIUM(III)
Publication TypeJournal Article
Year of Publication1991
AuthorsBerg, DJ, Rettig, SJ, Orvig, C
JournalJournal of the American Chemical Society
Volume113
Pagination2528-2532
Date PublishedMar
Type of ArticleArticle
ISBN Number0002-7863
KeywordsAGENTS, COORDINATION CHEMISTRY, CRYSTAL, MOLECULAR-STRUCTURE
Abstract

{Several binary heptacoordinate-N4O3-ligand LnL complexes of the lanthanides have been prepared and characterized. The heptadentate ligands are the Schiff base condensation products of tris(2-aminoethyl)amine with 3 equiv of either acetylacetone (to form H-3trac) or a hydroxyacetophenone (to form H-3hatren or H-3datren). The complexes hydrolyze easily but most of the Ln(trac) complexes are stable enough to sublime. Crystals of Yb(trac) were isolated by sublimation, and its structure has been solved; it is the first structurally characterized example of a lanthanide heptadentate ligand complex. Crystals of Yb(trac) are monoclinic
URL<Go to ISI>://A1991FD83700029