Zur elektronenstruktur hochsymmetrischer verbindungen der f-elemente-XXVI. Optische untersuchung eines tris(bis(trimethylsilyl)amido)samarium (III)-einkristalls

doi:10.1016/0584-8539(94)80092-8

Spectrochimica Acta Part A: Molecular Spectroscopy

Volume 50, Issue 7, July 1994, Pages 1267-1275

Spectrochimica Acta ...

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Abstract

The σ and π absorption and luminescence spectra, respectively, of an oriented single crystal of tris(bis(trimethylsilyl)amido)samarium (III) have been measured at low temperatures. From these data a truncated crystal field splitting pattern was derived.

Zusammenfassung

Die σ und π-Absorptions- und Lumineszenzspektren eines orientierten Tris(bis(trimethylsilyl)amido)samarium (III)-Einkristalls wurden im Tieftemperaturbereich vermessen. Auf der Grundlage der erhaltenen Spektren konnte das partielle Kristallfeld-Aufspaltungsmuster abgeleitet werden.

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The σ and π absorption spectra of an oriented tris(bis(trimethylsilyl)amido)erbium(III) (Er(btmsa)₃) single crystal were recorded at room and at low temperatures. From the spectra obtained the underlying crystal field (CF) splitting pattern was derived. The parameters of an empirical Hamiltonian (assuming both C_3v and D_3h symmetry of the effective CF) were fitted to this pattern to give reduced r.m.s. deviations of 23.3 and 28.9 cm⁻¹, respectively, for 45 assignments. The experimental CF splitting patterns of Ln(btmsa)₃ (Ln=Nd, Sm) which were previously analyzed adopting an effective CF of D_3h symmetry were refitted on the basis of C_3v symmetry.
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Zur elektronenstruktur hochsymmetrischer verbindungen der f-elemente-XXVI. Optische untersuchung eines tris(bis(trimethylsilyl)amido)samarium (III)-einkristalls

Abstract

Zusammenfassung

Coord. Chem. Rev.

J. Molec. Struct.

Spectrochim. Acta

J. Alloys Com.

Chem. Commun.

J. Chem. Soc. Dalton Trans.

J. Chem. Soc. Dalton Trans.

Inorg. Chem.

Chem. Commun.