Synthesis and characterisation of new ditetrazole-ligands as more rigid building blocks of envisaged iron(II) spin-crossover coordination polymers

Muttenthaler M., Bartel M., Weinberger P., Hilscher G. and Linert W. (2005) Synthesis and characterisation of new ditetrazole-ligands as more rigid building blocks of envisaged iron(II) spin-crossover coordination polymers. Journal of Molecular Structure, 741 1-3: 159-169. doi:10.1016/j.molstruc.2005.02.007


Author Muttenthaler M.
Bartel M.
Weinberger P.
Hilscher G.
Linert W.
Title Synthesis and characterisation of new ditetrazole-ligands as more rigid building blocks of envisaged iron(II) spin-crossover coordination polymers
Journal name Journal of Molecular Structure   Check publisher's open access policy
ISSN 0022-2860
Publication date 2005-05-01
Year available 2005
Sub-type Article (original research)
DOI 10.1016/j.molstruc.2005.02.007
Open Access Status Not yet assessed
Volume 741
Issue 1-3
Start page 159
End page 169
Total pages 11
Place of publication AMSTERDAM
Publisher ELSEVIER SCIENCE BV
Language eng
Abstract As the ligand system plays the most important role in the behaviour of the spin-transition of iron(II) spin-crossover compounds a series of eight new mainly bridging di-tetrazole ligands were synthesised and produced new insights into spacer modifications as well as geometric prerequisites of the ligand and their impact on spin-crossover behaviour. The focus laid on aryl-spaced tetrazole ligands, which were interesting analogues to the well-known alkyl-di-tetrazoles due to expected enhanced interaction within the molecular structure through pi-pi-stacking. The results of this fundamental study yielded further guidelines to optimize and fine-tune the ligand design, which are envisaged to be used for spin-crossover iron(II) coordination polymers of high T-1/2-values with abrupt spin transition behaviour. Additionally, one new SCO compound [mu-Tris(1-[1,1-dimethyl-2-(1H-tetrazol-1-yl)ethyl]-1H-tetrazole-N4,N4')iron(11)] bis(tetrafluoroborate)[Fe(dtmP)(3)](BF4)(2)-is presented. The compound features a spin transition around 160 K with a small thermal hysteresis of 5 K. (c) 2005 Elsevier B.V. All rights reserved.
Keyword IR
NMR
Spin-crossover
SQUID
Synthesis
Tetrazole
UV-Vis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
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