Issue 28, 2013
From the journal:

Dalton Transactions

A ferrocenyl-substituted 1,2,4-triazoleligand and its FeII, NiII and CuII 1D-chain complexes†

Hayley S. Scott,a   Ayman Nafady,ab   John D. Cashion,c   Alan M. Bond,a   Boujemaa Moubaraki,a   Keith S. Murray*a  and  Suzanne M. Neville*a  

* Corresponding authors

a School of Chemistry, Monash University, Building 23, Clayton, Victoria, Australia
E-mail: suzanne.neville@monash.edu, keith.murray@monash.edu
Fax: +61-3-99054597
Tel: +61-3-99054512

b King Saud University, College of Science, Chemistry Department, Kingdom of Saudi Arabia

c School of Physics, Monash University, Clayton, Victoria, Australia

Abstract

As part of a program aimed at making bifunctional iron(II) spin-crossover (SCO) materials, particularly those having redox/electron transfer as the second function, we have made the new ferrocene-triazole ligand ATF ([(4H-1,2,4-triazol-4-yl)amino]methylferrocene), (1), and a series of M(II) complexes of this ligand with emphasis on iron(II). Polynuclear 1D-chain complexes [Fe(ATF)3](Br)2·0.5(H2O) (2), [Fe(ATF)3](ClO4)2·0.5(H2O) (3), [Ni(ATF)3](ClO4)2·0.5(H2O) (4) and an analogous complex formed with a positively charged ATF ligand [Fe(ATF+)3](ClO4)5 (6) were formed as polycrystalline powders. Crystals of a mixed ATF/NCS-bridged copper(II) polymer [Cu(ATF)2(NCS)](ClO4)·(Et2O)0.5(MeCN) (5) were formed and structurally characterised. Magnetic and Mössbauer spectral measurements on 2, 3 and 6 indicated that SCO has not been achieved though the Mössbauer data show interesting temperature dependence for doublets of the two iron sites for complexes 2 and 3. Solid state cyclic voltammetric data on the iron(II) complexes 3 and 4 showed well defined, reversible ATF-based electrochemistry, similar to those shown by ATF in solution.

Graphical abstract: A ferrocenyl-substituted 1,2,4-triazole ligand and its FeII, NiII and CuII 1D-chain complexes

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Article information

DOI
https://doi.org/10.1039/C3DT50384D
Article type
Paper
Submitted
08 Feb 2013
Accepted
19 May 2013
First published
05 Jun 2013

Dalton Trans., 2013,42, 10326-10336

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A ferrocenyl-substituted 1,2,4-triazole ligand and its FeII, NiII and CuII 1D-chain complexes

H. S. Scott, A. Nafady, J. D. Cashion, A. M. Bond, B. Moubaraki, K. S. Murray and S. M. Neville, Dalton Trans., 2013, 42, 10326 DOI: 10.1039/C3DT50384D

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