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Snapshots of sequential polyphosphide rearrangement upon metallatetrylene addition

Sun, Xiaofei 1; Hinz, Alexander ORCID iD icon 1; Schulz, Stephan; Zimmermann, L.; Zimmermann, Lisa; Scheer, Manfred
1 Institut für Anorganische Chemie (AOC), Karlsruher Institut für Technologie (KIT)

Abstract:

Insertion and functionalization of gallasilylenes [L$^{Ph}$Si–Ga(Cl)L$^{BDI}$] (L$^{Ph}$ = PhC(NtBu)$_{2}$; L$^{BDI}$ = [{2,6-iPr$_{2}$C$_{6}$H$_{3}$NCMe}$_{2}$CH]) into the cyclo-E$_{5}$ rings of [Cp*Fe(η$^{5}$-E$_{5}$)] (Cp* = η$^{5}$-C$_{5}$Me$_{5}$; E = P, As) are reported. Reactions of [Cp*Fe(η$^{5}$-E$_{5}$)] with gallasilylene result in E–E/Si–Ga bond cleavage and the insertion of the silylene in the cyclo-E$_{5}$ rings. [(L$^{Ph}$Si-Ga(Cl)L$^{BDI}$){(η$^{4}$-P$_{5}$)FeCp*}], in which the Si atom binds to the bent cyclo-P$_{5}$ ring, was identified as a reaction intermediate. The ring-expansion products are stable at room temperature, while isomerization occurred at higher temperature, and the silylene moiety further migrates to the Fe atom, forming the corresponding ring-construction isomers. Furthermore, reaction of [Cp*Fe(η$^{5}$-As$_{5}$)] with the heavier gallagermylene [LL$^{Ph}$Ge–Ga(Cl)L$^{BDI}$B] was also investigated. All the isolated complexes represent rare examples of mixed group 13/14 iron polypnictogenides, which could only be synthesized by taking advantage of the cooperativity of the gallatetrylenes featuring low-valent Si(II) or Ge(II) and Lewis acidic Ga(III) units/entities.


Verlagsausgabe §
DOI: 10.5445/IR/1000158479
Veröffentlicht am 10.05.2023
Originalveröffentlichung
DOI: 10.1039/D3SC00806A
Scopus
Zitationen: 2
Web of Science
Zitationen: 2
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Anorganische Chemie (AOC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 2041-6520, 2041-6539
KITopen-ID: 1000158479
Erschienen in Chemical Science
Verlag Royal Society of Chemistry (RSC)
Nachgewiesen in Scopus
Dimensions
Web of Science
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