New types of the germanium-capped clathrochelate iron(II) and cobalt(III) tris-dioximates: The synthesis, structure and electrochemical properties

The first bis-germanium-capped cobalt(III) and mixed germanium-boron-cross-linked iron(II) tris-dioximate clathrochelates were obtained and characterized using elemental analysis, UV–vis, IR, MALDI-TOF mass, 1H, 19F and 13C{1H} NMR spectra (for both the cobalt(III) and iron(II) complexes) as well as by X-ray diffraction crystallography (for the iron(II) macrobicycle).

Graphical abstractThe first mixed boron-germanium-capped iron(II) clathrochelate with non-equivalent cross-linking groups and the bis-germanium-containing cobalt(III) complex were synthesized by transmetallation of the corresponding antimony-capped clathrochelate iron(II) and cobalt(III) precursors with IGe(CF3)3 and characterized using elemental analysis, spectral and electrochemical data as well as by X-ray diffraction crystallography (for the iron(II) complex).Figure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights►Mixed boron-germanium-capped iron(II) clathrochelate was obtained by transmetallation. ►Boronantimony-capped macrobicyclic precursor undergoes transmetallation with IGe(CF3)3. ►Bisantimony-capped cobalt(III) clathrochelate undergoes transmetallation with IGe(CF3)3. ►The electrochemically generated oxidized clathrochelates are stable in CVA time scale.