Issue 22, 2001
From the journal:

Journal of the Chemical Society, Dalton Transactions

Lanthanide porphyrazine sandwich complexes: synthetic, structural and spectroscopic investigations

Antonio Garrido Montalban,a   Sarah L. J. Michel,b   Sven M. Baum,a   Benjamin J. Vesper,b   Andrew J. P. White,a   David J. Williams,a   Anthony G. M. Barrett*a  and  Brian M. Hoffman*b  

* Corresponding authors

a Department of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London, UK

b Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA

Abstract

The synthesis of four novel lanthanide tetraazaporphyrin (porphyrazine) sandwich complexes is reported: [Ce(OPTAP)2] (2), [Lu(OPTAP)2] (3), [Eu(OPTAP)2] (4) and [Eu2(OPTAP)3] (5) (OPTAP = 2,3,7,8,12,13,17,18-octapropyltetraazaporphyrinato). The structure of 2 has been unequivocally established by an X-ray crystallographic study. The π radical nature of 3 and 4 has been confirmed by UV-vis, IR, and EPR spectroscopy. Cyclic voltammetry results show that 2–5 are more easily oxidized than 1 (H2OPTAP) by 0.41, 0.56, 0.48 and 0.40 V respectively.

Graphical abstract: Lanthanide porphyrazine sandwich complexes: synthetic, structural and spectroscopic investigations

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Article information

DOI
https://doi.org/10.1039/B103346H
Article type
Paper
Submitted
17 Apr 2001
Accepted
27 Sep 2001
First published
24 Oct 2001

J. Chem. Soc., Dalton Trans., 2001, 3269-3273

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Lanthanide porphyrazine sandwich complexes: synthetic, structural and spectroscopic investigations

A. Garrido Montalban, S. L. J. Michel, S. M. Baum, B. J. Vesper, A. J. P. White, D. J. Williams, A. G. M. Barrett and B. M. Hoffman, J. Chem. Soc., Dalton Trans., 2001, 3269 DOI: 10.1039/B103346H

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