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Issue 39, 2013
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On-surface coordination chemistry: direct imaging of the conformational freedom of an axial ligand at room temperature

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Abstract

The on-surface ligation of nitric oxide (NO) with Co-tetraphenylporphyrin (CoTPP) sublimed onto oxygen-reconstructed Ni(001) is studied using room-temperature scanning tunneling microscopy (STM) and complementary photoemission spectroscopies. On the oxygen-reconstructed substrates, the porphyrins are observed to form well-ordered, self-assembled layers. STM directly images the NO ligand as a characteristic feature in the center of the molecule. Under certain STM imaging conditions the dynamicity of this feature can be related to the temperature-activated conformational flexibility of the NO ligand. This provides an indirect confirmation of the bending of the Co–NO bond, as predicted from classical coordination chemistry.

Graphical abstract: On-surface coordination chemistry: direct imaging of the conformational freedom of an axial ligand at room temperature

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Publication details

The article was received on 04 Mar 2013, accepted on 24 Jul 2013 and first published on 02 Sep 2013


Article type: Paper
DOI: 10.1039/C3CP50966D
Citation: Phys. Chem. Chem. Phys., 2013,15, 16510-16514
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    On-surface coordination chemistry: direct imaging of the conformational freedom of an axial ligand at room temperature

    C. Wäckerlin, D. Siewert, T. A. Jung and N. Ballav, Phys. Chem. Chem. Phys., 2013, 15, 16510
    DOI: 10.1039/C3CP50966D

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