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A heterobimetallic tetrahedron from a linear platinum(II)-bis(acetylide) metalloligand.

ABSTRACT: Employing 4-ethynylaniline as a simple organic ligand we were able to prepare the stable trans-bis(acetylide)platinum(II) complex [Pt(L¹)₂(PBu₃)₂] as a linear metalloligand. The reaction of this metalloligand with iron(II) cations and pyridine-2-carbaldehyde according to the subcomponent self-assembly approach yielded decanuclear heterobimetallic tetrahedron [Fe₄Pt₆(L²)₁₂](OTf)₈. Thus, combination of these two design concepts - the subcomponent self-assembly strategy and the complex-as-a-ligand approach - ensured a fast and easy synthesis of large heterobimetallic coordination cages of tetrahedral shape with a diameter of more than 3 nm as a mixture of all three possible T-, S ₄- and C ₃-symmetric diastereomers. The new complexes were characterized by NMR and UV-vis spectroscopy and ESI mass spectrometry. Using GFN2-xTB we generated energy-minimized models of the diastereomers of this cage that further corroborated the results from analytical findings.

SUBMITTER: Hardy M

PROVIDER: S-EPMC7653331 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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A heterobimetallic tetrahedron from a linear platinum(II)-bis(acetylide) metalloligand.

Hardy Matthias M Engeser Marianne M Lützen Arne A

Beilstein journal of organic chemistry 20201103

Employing 4-ethynylaniline as a simple organic ligand we were able to prepare the stable trans-bis(acetylide)platinum(II) complex [Pt(L1)2(PBu3)2] as a linear metalloligand. The reaction of this metalloligand with iron(II) cations and pyridine-2-carbaldehyde according to the subcomponent self-assembly approach yielded decanuclear heterobimetallic tetrahedron [Fe4Pt6(L2)12](OTf)8. Thus, combi ...[more]

PMID: 33214795

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