Reactivity of [Cp''2 Zr(η1:1 -E4 )] (E=P, As) towards Nucleophiles.
Chemistry
; 29(34): e202301016, 2023 Jun 19.
Article
em En
| MEDLINE
| ID: mdl-37129582
ABSTRACT
The functionalization of the polypnictogen ligand complexes [Cp''2 Zr(η11 -E4 )] (E=P (1 a), As (1 b); Cp''=1,3-di-tertbutyl-cyclopentadienyl) is focused to modify the features of the polypnictogen unit to explore new synthetic pathways for further transformations. The reaction behavior of 1 towards main group nucleophiles is investigated. The reaction of 1 a with t BuLi leads to the ionic product Li[Cp''2 Zr(η11 -P4 t Bu)] (2) where an organic group is attached to a bridgehead phosphorus atom of the butterfly unit. Further reactions of 2 with quenching electrophilic reagents enable the introduction of other substituents. Moreover, a condensation of 2 to [(Cp''2 Zr)2 (µ,η1111 -P8 t Bu2 )] (3), containing a novel P8 -unit, has been observed. The reaction of 1 with LiNMe2 and LiCH2 SiMe3 leads to a partial fragmentation of the E4 unit and the compounds [Cp''2 Zr(η2 -E3 Nu)] (Nu=NMe2 E=P (6 a), As (6 b); Nu=CH2 SiMe3 E=P (7 a), As (7 b)) are formed.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2023
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Article