NHCs As Neutral Donors Towards Polyphosphorus Complexes

Overview

Journal Chemistry

Specialty Chemistry

Date 2020 Aug 4

PMID 32745336

Citations 6

Authors

Felix Riedlberger

Stefano Todisco

Piero Mastrorilli

Alexey Y Timoshkin

Michael Seidl

Manfred Scheer

Affiliations

Soon will be listed here.

Abstract

The first adducts of NHCs (=N-heterocyclic carbenes) with aromatic polyphosphorus complexes are reported. The reactions of [Cp*Fe(η -P )] (1) (Cp*=pentamethyl-cyclopentadienyl) with IMe (=1,3,4,5-tetramethylimidazolin-2-ylidene), IMes (=1,3-bis(2,4,6-trimethylphenyl)-imidazolin-2-ylidene) and IDipp (=1,3-bis(2,6-diisopropylphenyl)-imidazolin-2-ylidene) led to the corresponding neutral adducts which can be isolated in the solid state. However, in solution, they quickly undergo a dissociative equilibrium between the adduct and 1 including the corresponding NHC. The equilibrium is influenced by the bulkiness of the NHC. [Cp''Ta(CO) (η -P )] (Cp''=1,3-di-tert-butylcyclopentadienyl) reacts with IMe under P atom abstraction to give an unprecedented cyclo-P -containing anionic tantalum complex. DFT calculations shed light onto the energetics of the reaction pathways.

Citing Articles

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Binding, Release and Functionalization of Intact Pnictogen Tetrahedra Coordinated to Dicopper Complexes.

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Riesinger C, Balazs G, Seidl M, Scheer M Chem Sci. 2021; 12(39):13037-13044.

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Versatile Coordination of Ag and Cu Ions towards cyclo-As Ligands.

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Synthesis and Multiple Subsequent Reactivity of Anionic cyclo-E Ligand Complexes (E=P, As).

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