Comparative investigations on a series of [hexakis(1-(tetrazol-1-yl) alkane-N4) 
iron(II)] bis(tetrafluoroborate) spin crossover complexes: Methyl- to 
butyl-substituted species

Hassan, Nader; Weinberger, Peter; Mereiter, Kurt; Werner, Franz; Molnár, Gábor L.; Bousseksou, Azzedine; Valtiner, Markus; Linert, Wolfgang

doi:10.1016/j.ica.2007.08.023

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Comparative investigations on a series of [hexakis(1-(tetrazol-1-yl) alkane-N4) iron(II)] bis(tetrafluoroborate) spin crossover complexes: Methyl- to butyl-substituted species

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Hassan, N., Weinberger, P., Mereiter, K., Werner, F., Molnár, G. L., Bousseksou, A., et al. (2008). Comparative investigations on a series of [hexakis(1-(tetrazol-1-yl) alkane-N4) iron(II)] bis(tetrafluoroborate) spin crossover complexes: Methyl- to butyl-substituted species. Inorganica Chimica Acta, 361(5), 1291-1297. doi:10.1016/j.ica.2007.08.023.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0026-BB28-A

Abstract

A series of 1-(tetrazol-1-yl)alkanes [ntz] with n = 1- 4 were synthesised as ligands for iron(II) spin crossover complexes. Within this series 1-(tetrazol-1-yl) butane [4tz] was prepared for the first time, whereas 1-(tetrazol-1-yl) methane [1tz], 1-(tetrazol-1-yl) ethane [2tz], 1-(tetrazol-1-yl) propane [3tz] and the [hexakis(ntz) iron(II)] bis(tetrafluoroborate)complexes were prepared according to the literature. Aiming for a comparative study we characterized all four compounds by XRPD, magnetic susceptibility measurements, Fe-57-Moessbauer spectroscopy and IR spectroscopy. [Fe(4tz)(6)](BF4)(2) yielded appropriate single crystals and an X-ray structure of the new compound [Fe(4tz)(6)](BF4)(2) is presented. The magnetic and structural properties of all [Fe(ntz)(6)](BF4)(2) are compared and discussed. (C) 2007 Elsevier B.V. All rights reserved.