The 5/2,3/2 Spin Admixture in the Chloroiron(III) Derivative of the Sterically Crowded 2,3,7,8,12,13,17,18-Octaethyl-5,10,15,20-tetraphenylporphyrin

Despite similar ring deformations in solution and in the solid state, the chloroiron(III) derivative of 2,3,7,8,12,13,17,18‐octaethyl‐5,10,15,20‐tetraphenylporphyrin ([FeCl(oetpp)], shown schematically) prepared in this study exhibits only a very weak quantum‐mechanical admixture of spin S=3/2 (only...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 1999-11, Vol.38 (21), p.3181-3183
Main Authors: Schünemann, Volker, Gerdan, Michael, Trautwein, Alfred X., Haoudi, Najib, Mandon, Dominique, Fischer, Jean, Weiss, Raymond, Tabard, Alain, Guilard, Roger
Format: Article
Language:English
Subjects:
Admixtures
Deformation
Derivatives
EPR spectroscopy
Iron
Magnetic properties
Moessbauer spectroscopy
Porphyrinoids
Solid state
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Summary:Despite similar ring deformations in solution and in the solid state, the chloroiron(III) derivative of 2,3,7,8,12,13,17,18‐octaethyl‐5,10,15,20‐tetraphenylporphyrin ([FeCl(oetpp)], shown schematically) prepared in this study exhibits only a very weak quantum‐mechanical admixture of spin S=3/2 (only 4–10 %) with spin S=5/2. In contrast, for the variety of [FeCl(oetpp)] studied earlier by other researchers a 40 % contribution of the S=3/2 state was found.
ISSN:1433-7851
1521-3773
DOI:10.1002/(SICI)1521-3773(19991102)38:21<3181::AID-ANIE3181>3.0.CO;2-7