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Updated: Jul 12, 2026
Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
Published on: May 28, 2014
Silica-Supported Mononuclear Methyl-Platinum Complexes Stabilized by Trimethylphosphine-Synthesis, Structure, and
Lea S Kopietz1, Sven Schaefer2, Oksana Storcheva1
1Department of Chemistry, TUM School of Natural Sciences, and Catalysis Research Center, Technical University of Munich, Garching, Germany.
Abstract:
The chemistry of single-site platinum surface complexes with phosphine ligands is rarely understood, in contrast to its well-known chemistry in solution. This report describes the synthesis of a supported bis(phosphine)methylplatinum(II) complex on silicon dioxide (PtMe(PMe3)2/SiO2) and its reactivity with carbon monoxide, hydrogen, and under inert gas. The parent compound and reaction intermediates are characterized by IR-, solid-state NMR, and X-ray absorption spectroscopy. The sterically non-demanding monodentate phosphine ligands stabilize the platinum centers, allowing the formation of several isolated trans complexes on silica. One of them is a platinum hydride that effectively catalyzes the isomerization of 1-hexene. The stabilization of the molecular hydride contrasts with the reactivity of known supported platinum methyl complexes, such as PtMe(cod)/SiO2, which tend to form supported platinum nanoparticles under the applied mild conditions.
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Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...