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A “Push–Pull” Stabilized Phosphinidene Supported by a Phosphine‐Functionalized β‐Diketiminato Ligand

Bestgen, Sebastian; Mehta, Meera; Johnstone, Timothy C.; Roesky, Peter W.; Goicoechea, Jose M.

Abstract:
The use of a bis(diphenyl)phosphine functionalized β‐diketiminato ligand, [HC{(CH$_{3}$)C}$_{2}${(ortho‐[P(C$_{6}$H$_{5}$)$_{2}$]$_{2}$C$_{6}$H$_{4}$)N}$_{2}$]$^{-}$ (PNac), as a support for germanium(II) and tin(II) chloride and phosphaketene compounds, is described. The conformational flexibility and hemilability of this unique ligand provide a versatile coordination environment that can accommodate the electronic needs of the ligated elements. For example, chloride abstraction from [(PNac)ECl] (E=Ge, Sn) affords the cationic germyliumylidene and stannyliumylidene species [(PNac)E]$^{+}$ in which the pendant phosphine arms associate more strongly with the Lewis acidic main group element centers, providing further electronic stabilization. In a similar fashion, chemical decarbonylation of the germanium phosphaketene [(PNac)Ge(PCO)] with tris(pentafluorophenyl)borane affords a “push–pull” stabilized phosphinidene in which one of the phosphine groups of the ligand backbone associates with the low valent phosphinidene center.

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Verlagsausgabe §
DOI: 10.5445/IR/1000122246
Veröffentlicht am 29.07.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Anorganische Chemie (AOC)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 07.2020
Sprache Englisch
Identifikator ISSN: 0947-6539, 1521-3765
KITopen-ID: 1000122246
Erschienen in Chemistry - a European journal
Band 26
Heft 41
Seiten 9024–9031
Vorab online veröffentlicht am 06.07.2020
Nachgewiesen in Web of Science
Scopus
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