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Issue 30, 2015
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Synthesis and characterization of a modified “picket fence” porphyrin complex – stronger π bonding interactions between Fe(II) and axial ligands

Baiyin He,a  Charles E. Schulzb  and  Jianfeng Li*a 
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* Corresponding authors

a College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, YanQi Lake, HuaiRou District, Beijing, China
E-mail: jfli@ucas.ac.cn

b Department of Physics, Knox College, Galesburg, USA

Abstract

A new, modified “picket fence” porphyrin is synthesized and its bis(imidazole)-ligated iron(II) derivative [Fe(MbenTpivPP)(1-MeIm)2] is investigated. X-ray structure determinations demonstrate that [Fe(MbenTpivPP)(1-MeIm)2] has structural features of a near planar porphyrin plane, a relative perpendicular ligand orientation, and one unusually large absolute ligand orientation (φ). The combination of these features leads to a new type of species that is different from previously reported analogues. Further structural examination reveals a strong correlation between the mutual ligand orientations (θ) and the axial Fe–NIm bond distances, which is detailed for the first time. Mössbauer spectroscopic characterization shows that the low spin derivative has a quadrupole splitting of 0.99 mm s−1 at 100 K.

Graphical abstract: Synthesis and characterization of a modified “picket fence” porphyrin complex – stronger π bonding interactions between Fe(ii) and axial ligands

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Publication details

The article was received on 09 Mar 2015, accepted on 22 Jun 2015 and first published on 24 Jun 2015


Article type: Paper
DOI: 10.1039/C5DT00941C
Author version available: Download Author version (PDF)
Citation: Dalton Trans., 2015,44, 13651-13661
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    Synthesis and characterization of a modified “picket fence” porphyrin complex – stronger π bonding interactions between Fe(II) and axial ligands

    B. He, C. E. Schulz and J. Li, Dalton Trans., 2015, 44, 13651
    DOI: 10.1039/C5DT00941C

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