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Enantiomerically Pure Tetravalent Neptunium Amidinates: Synthesis and Characterization

Fichter, Sebastian; Kaufmann, Sebastian; Kaden, Peter; Brunner, Tobias S.; Stumpf, Thorsten; Roesky, Peter W.; März, Juliane

Abstract:
The synthesis of a tetravalent neptunium amidinate [NpCl((S )‐PEBA)$_{3}$] (1 ) ((S )‐PEBA=(S ,S )‐N ,N′‐bis‐(1‐phenylethyl)‐benzamidinate) is reported. This complex represents the first structurally characterized enantiopure transuranic compound. Reactivity studies with halide/pseudohalides yielding [NpX((S )‐PEBA)$_{3}$] (X=F (2 ), Br (3 ), N3 (4 )) have shown that the chirality‐at‐metal is preserved for all compounds in the solid state. Furthermore, they represent an unprecedented example of a structurally characterized metal–organic Np complex featuring a Np−Br (3 ) bond. In addition, 4 is the only reported tetravalent transuranic azide. All compounds were additionally characterized in solution using para‐magnetic NMR spectroscopy showing an expected C$_{3}$‐symmetry at low temperatures.

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Verlagsausgabe §
DOI: 10.5445/IR/1000121169
Veröffentlicht am 10.07.2020
Originalveröffentlichung
DOI: 10.1002/chem.202001865
Scopus
Zitationen: 3
Web of Science
Zitationen: 2
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Anorganische Chemie (AOC)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 22.07.2020
Sprache Englisch
Identifikator ISSN: 0947-6539, 1521-3765
KITopen-ID: 1000121169
Erschienen in Chemistry - a European journal
Verlag Wiley
Band 26
Heft 41
Seiten 8867-8870
Vorab online veröffentlicht am 25.06.2020
Nachgewiesen in Dimensions
Web of Science
Scopus
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