Substitution Lability of the Perfluorinated Cp* Ligand in [Rh(COD)(C5(CF3)5)] Towards Triphenylpnictogens EPh3 (E=N, P, As, Sb, Bi)

Nico G Kub; Robin Sievers; Joshua Parche; Moritz Malischewski

doi:10.1002/chem.202400427

Substitution Lability of the Perfluorinated Cp* Ligand in [Rh(COD)(C₅(CF₃)₅)] Towards Triphenylpnictogens EPh₃ (E=N, P, As, Sb, Bi)

Chemistry. 2024 Apr 22;30(23):e202400427. doi: 10.1002/chem.202400427. Epub 2024 Apr 11.

Authors

Nico G Kub¹, Robin Sievers¹, Joshua Parche¹, Moritz Malischewski¹

Affiliation

¹ Institute of Chemistry and Biochemistry - Inorganic Chemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany.

PMID: 38380762
DOI: 10.1002/chem.202400427

Abstract

Triphenylpnictogens EPh₃ (E=N, P, As, Sb, Bi) are able to displace the perfluorinated Cp* ligand in [Rh(COD)(C₅(CF₃)₅)] (COD=1,5-cyclooctadiene) in up to quantitative yield. The resulting ionic products contain [C₅(CF₃)₅]^- as uncoordinated counter anion. The cations feature [Rh(COD)]⁺ fragments, coordinated by one (N, Bi), two (P, As) or three (Sb) triphenylpnictogen moieties. Whereas coordination via the pnictogen is observed for P, As and Sb, π-coordination of the aryl rings is observed for N and Bi.

Keywords: arene ligands; cyclopentadienyl ligands; fluorinated ligands; pnictogens; rhodium.

Abstract

Grants and funding