Enhancing the catalytic properties of well-defined electrophilic platinum complexes

Abstract

Well-defined electrophilic or low-electron count platinum complexes are very versatile catalysts for a variety of chemical transformations.

Which DFT factors influence the accuracy of 1H, 13C and 195Pt NMR chemical shift predictions in organopolymetallic square-planar complexes? New scaling parameters for homo- and hetero-multimetallic compounds and their direct applications

“…, catalysts), materials science, and nano-chemistry to biochemistry. 15–19 The sensitivity to the nature of ligands in the coordination sphere, the oxidation state of metals, various coordination numbers and the possible geometries sometimes make the NMR peak assignment difficult. Over the last few decades DFT NMR calculations have been employed complementarily to the experimental data for the interpretation of complex NMR spectra.…”

Development of highly efficient platinum catalysts for hydroalkoxylation and hydroamination of unactivated alkenes

“…(3) Cationic systems, with diamine 35 – 38 , bisphosphine 39 , 40 , carbene 41 – 43 or pincer ligands 44 – 46 ; in particular, Gagné discovered a series of elegant cationic Pt(II) complexes, such as (PPP)Pt 2+ and (PP)PPt 2+ , which efficiently inhibit β -H elimination as a competing decomposition pathway 31 , 40 , 46 . Among the three activation modes, coordination to the cationic Pt derivatives renders the multiple bonds more electrophilic and thus susceptible to nucleophilic attack 47 , 48 .

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Synthesis and Evaluation of the Cytotoxic Activity of Water-Soluble Cationic Organometallic Complexes of the Type [Pt(η1-C2H4OMe)(L)(Phen)]+ (L = NH3, DMSO; Phen = 1,10-Phenanthroline)

“…In this regard, the Zeise’s anion, [PtCl 3 (η 2 -C 2 H 4 )] − , showing an extreme lability of the trans to olefin chlorido ligand and a peculiar reactivity of the coordinated ethene, resulted to be a suitable precursor for the synthesis of new antitumor organometallic complexes [ 19 ]. In fact, it allows the formation of platinum(II) organometallic complexes by the promotion of coordination in the platinum(II) sphere of specific carrier ligands and the exploitation of the intrinsic π-acid character of platinum-coordinated η 2 -ethene [ 36 , 37 , 38 , 39 ]. We already explored the synthetic possibilities offered by the peculiar reactivity of the Zeise’s anion in strongly basic oxydrilated solvents, demonstrating that in these conditions, anionic species of the type trans -[PtCl 2 (η 2 -C 2 H 4 )(OR)] − (R = H, alkyl) are easily formed.…”