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Synthesis and Reactivity of Bis(silylene)-Coordinated Calcium and Divalent Lanthanide Complexes [in press]

Sun, Xiaofei; Simler, Thomas; Reiter, Kevin; Weigend, Florian; Roesky, Peter W.

Abstract:
Divalent lanthanide complexes of Eu (1) and Yb (2) coordinated by a chelating pyridine‐based bis(silylene) ligand were isolated and fully characterized. Compared to the Eu$^{II}$ complex 1, the Yb$^{II}$ complex 2 presents a lower thermal stability, resulting in the activation of one Si$^{II}$−N bond and formation of an Yb$^{III}$ complex (3), which features a unique silylene‐pyridyl‐amido ligand. The different thermal stability of 1 and 2 points towards reduction‐induced cleavage of one Si$^{II}$−N bond of the bis(silylene) ligand. Successful isolation of the corresponding redox‐inert bis(silylene) Ca$^{II}$ complex (5) was achieved at low temperature and thermal decomposition into a Ca$^{II}$ complex (4) bearing the same silylene‐pyridyl‐amido ligand was identified. In this case, the thermolysis reaction proceeds through another, non‐redox induced, mechanism. An alternative higher yielding route to 4 was developed through an in situ generated silylene‐pyridyl‐amine proligand.

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Verlagsausgabe §
DOI: 10.5445/IR/1000125467
Veröffentlicht am 03.11.2020
Originalveröffentlichung
DOI: 10.1002/chem.202003417
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Anorganische Chemie (AOC)
Institut für Physikalische Chemie (IPC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 0947-6539, 1521-3765
KITopen-ID: 1000125467
Erschienen in Chemistry - a European journal
Vorab online veröffentlicht am 03.08.2020
Nachgewiesen in Scopus
Web of Science
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