"Comparative Analysis of the Donor Properties of Isomeric Pyrrolyl Phos" by Vicky A. Osenga, Nolan C. Sykes et al.
 

Comparative Analysis of the Donor Properties of Isomeric Pyrrolyl Phosphine Ligands

DOI

10.1021/acs.organomet.3c00467

Abstract

Understanding the net donor and electronic properties of pyrrole-based phosphines is critical for guiding their use as ligands. In this study, we compare two isomeric 1- and 2-(diphenylphosphino)methylpyrroles (L1 and L2, respectively) to determine the degree to which N-(phosphino)pyrroles are distinct from aryl- and 2-pyrrolyl phosphines. Ruthenium, rhodium, platinum, and gold complexes as well as selenide derivatives of these ligands are examined using NMR and IR spectroscopy, X-ray crystallography, and cyclic voltammetry. Ligand L2 exhibits net donor properties similar to those of the o-tolyl analogue L3, while L1 shows attenuated electron donation ability. Additionally, a model nickel-catalyzed Kumada coupling reaction using these three ligands was investigated.

Document Type

Article

Publication Date

12-22-2023

Publisher Statement

Copyright © 2023 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0. cc licence

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