Utilising a Proton-Responsive 1,8-Naphthyridine Ligand for the Synthesis of Bimetallic Palladium and Platinum Complexes

Arie J.H. Multem, Andie R. Delaney, Asja A. Kroeger, Michelle L. Coote*, Annie L. Colebatch*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    We present four proton-responsive palladium and platinum complexes, [MCl2(RPONNHO)] (M=Pd, Pt; R=iPr, tBu) synthesised by complexation of PdCl2 or PtCl2(COD) with the 1,8-naphthyridine ligand RPONNHO. Deprotonation of [MCl2(tBuPONNHO)] switches ligand coordination from mono- to dinucleating, offering a synthetic pathway to bimetallic PdII and PtII complexes [M2Cl2(tBuPONNO)2]. Two-electron reduction gives planar MI−MI complexes [M2(tBuPONNO)2] (M=Pd, Pt) containing a metal-metal bond. In contrast to the related nickel system that forms a metallophosphorane [Ni2(tBuPONNOPONNO)], an unusual phosphinite binding mode is observed in [M2(tBuPONNO)2] containing close phosphinite-naphthyridinone P⋅⋅⋅O interactions, which is investigated spectroscopically, crystallographically and computationally. The presented proton-responsive and structurally-responsive RPONNHO and bimetallic RPONNO complexes offer a novel platform for future explorations of metal-ligand and metal-metal cooperativity with palladium and platinum.

    Original languageEnglish
    Article numbere202301071
    Number of pages13
    JournalChemistry - An Asian Journal
    Volume19
    Issue number3
    DOIs
    Publication statusPublished - 1 Feb 2024

    Fingerprint

    Dive into the research topics of 'Utilising a Proton-Responsive 1,8-Naphthyridine Ligand for the Synthesis of Bimetallic Palladium and Platinum Complexes'. Together they form a unique fingerprint.

    Cite this