Organoruthenium complexes containing hemilabile phosphinodicarboxamide ligands

Nolla-Saltiel, R., Geer, A.M., Sharpe, H.R., Huke, C.D., Taylor, L.J., Linford-Wood, T.G., James, A., Allen, J., Lewis, W., Blake, A.J., McMaster, J. and Kays, D.L. ORCID: https://orcid.org/0000-0002-4616-6001 2022. Organoruthenium complexes containing hemilabile phosphinodicarboxamide ligands. [Online]. ChemRxiv: Available at: https://doi.org/10.26434/chemrxiv-2022-37ncj

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Abstract

Ruthenium complexes of hemilabile phosphinocarboxamide ligands, and their use to form metallacycles using halide abstraction/deprotonation reactions are reported. Thus, [Ru(p-cym){PPh2C(=O)NHR}Cl2; R = iPr (1), Ph (2), p-tol (3)] and [Ru(p-cym){PPh2C(=O)N(R)C(=O)N(H)R}Cl2; R = Ph (4), p-tol (5)] were synthesized from [(p-cym)RuCl2]2 (p-cym = para-cymene) and phosphinocarboxamides or phosphinodicarboxamides, respectively. Single crystal X-ray diffraction measurements on 1–5 reveal coordination to ruthenium through the phosphorus donor, with an intramolecular hydrogen bond between the amine-bound proton and a metal-bound chloride. Six-membered metallacycles formed by halide abstraction/deprotonation of complexes 4 and 5 afforded [Ru(p-cym){κ2-P,N-PPh2C(=O)N(R)C(=O)NR}Cl] [R = Ph (6), p-tol (7)]. These species exist as a mixture of two rotational isomers in solution, as demonstrated by NMR spectroscopy.

Item Type:	Website Content
Date Type:	Submission
Status:	Published
Schools:	Chemistry
ISSN:	2573-2293
Last Modified:	19 Jul 2024 16:15
URI:	https://orca.cardiff.ac.uk/id/eprint/170295

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