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• W2011029087 abstract "The compounds [Ln(NC12H8)2], Ln = Eu and Yb, were obtained in solvent free reactions of the rare earth elements europium and ytterbium with the amine carbazole. Single crystals of both compounds were grown from the melt syntheses, no recrystallization from solvents was necessary. The new compounds are the first examples of homoleptic carbazolates of the rare earth elements furthermore exhibiting divalent lanthanides. In absence of any solvent, carbazole as the sole coordination partner shows η6-π-coordination in addition to the μ1- and μ2-coordination of the nitrogen atoms. This results in a one-dimensional chain structure of dimers with a formal C.N. of 6 for the rare earth elements and thus being low for divalent lanthanides. The products were investigated by X-ray single crystal and powder diffraction, Mid IR, Far IR and Raman spectroscopy, and with DTA/TG regarding their thermal behaviour. Both compounds [Ln(NC12H8)2], Ln = Eu (1) and Yb (2), crystallize isotypic in the triclinic space group P1.Erste homoleptische Selten-Erd-Carbazolate: Synthese, Kristallstrukturen, Spektroskopische und Thermische Untersuchungen von divalentem 1[Ln(NC12H8)2], mit Ln = Europium und YtterbiumDie Verbindungen [Ln(NC12H8)2], Ln = Eu und Yb, wurden aus solvens-freier Reaktion der Selten-Erd-Elemente Europium und Ytterbium mit dem Amin Carbazol synthetisiert. Einkristalle beider Verbindungen wurden aus der Schmelze erhalten, so das keinerlei Rekristallisation aus Losung notwendig war. Die neuen Verbindungen stellen die ersten Beispiele homoleptischer Carbazolate der Selten-Erd-Elemente dar und enthalten ferner zweiwertige Selten-Erd-Elemente. In Abwesenheit jeglicher Losemittel ermoglicht Carbazol als einziger Koordinationspartner der Metalle η6-π-Koordinationen zusatzlich zu μ1- and μ2- koordinierenden N-Atomen. Das Ergebnis ist eine aus dimeren Einheiten zusammengesetzte, ein-dimensionale Kettenstruktur mit einer formalen C.N. von sechs, d.h. niedrig fur zweiwertige Selten-Erd-Elemente. Die Produkte wurden mittels Einkristallstrukturanalyse, Pulverdiffraktometrie, ferner und mittlerer IR-, sowie Ramanspektroskopie und mittels DTA/TG auf ihr thermisches Verhalten untersucht. Beide Verbindungen [Ln(NC12H8)2], Ln = Eu (1) und Yb (2), kristallisieren isotyp in der triklinen Raumgruppe P1." @default.
• W2011029087 created "2016-06-24" @default.
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• W2011029087 date "2003-08-01" @default.
• W2011029087 modified "2023-09-27" @default.
• W2011029087 title "First Homoleptic Rare Earth Carbazolates: Synthesis, Crystal Structures, Spectroscopic and Thermal Investigations of Divalent1[Ln(NC12H8)2] with Ln = Europium and Ytterbium" @default.
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• W2011029087 doi "https://doi.org/10.1002/zaac.200300152" @default.
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