First clathrochelate iron and cobalt(II) tris-dioximates with reactive apical substituents

Direct template macrobicyclization of three 1,2-cyclohexanedione dioxime molecules with monofunctionalized HO-, H2N- and HOOC-containing phenylboronic acids on Fe2 + and Co2 + ions as a matrix afforded new macrobicyclic iron and cobalt(II) tris-dioximates with reactive apical substituents. The clathrochelates synthesized has been characterized by spectroscopic methods, X-ray crystallography and cyclic voltammetry.

Graphical abstractFirst iron(II) tris-dioximate clathrochelates with reactive HO-, H2N- and HOOC-terminated apical substituents were obtained by direct template condensation of 1,2-cyclohexanedion dioxime with monofunctionalized phenylboronic acids on iron and cobalt(II) ions as a matrix.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Iron and cobalt(II) clathrochelates with reactive apical groups were obtained. ► Template reaction gave apically functionalized iron and cobalt(II) clathrochelates. ► Terminal HO-, HOOC- and H2N-groups allow further functionalization of clathrochelates.