P. Franke, J. Haasnoot, A. P. Zuur
1982
Citations
2
Influential Citations
114
Citations
Quality indicators
Journal
Inorganica Chimica Acta
Abstract
Abstract 1-Alkyl substituted tetrazoles and iron(III) tetrafluoroborate lead to the formation of hexacoordinated iron(II) complexes, viz. : [FeL 6 ](BF 4 ) 2 with L = 1-methyltetrazole (MTZ), 1-ethyltetrazole (ETZ), 1-propyltetrazole (PTZ) and 1-isopropyltetrazole (IPTZ). The complexes were identified and characterized by elemental analyses, IR and ligand field spectra and magnetic susceptibility measurements. The iron(II) ions are octahedrally surrounded by monodentate ligands and a mononuclear complex formation is obvious. At temperatures varying from 140–80 K the complexes show high-spin ( 5 T 2g ) ⇋ low-spin ( 1 A 1g ) transitions, recognizable by a colour change from white to purple. The transitions were followed by magnetic measurements.