Copper(II) complex of a tridentate N-donor ligand with unexpected Cu–H interaction

The new pyridine–amine ligand, meophdpa (bis(dipyridylmethyl)-4-methoxyaniline) was synthesised and reacted with copper(II) perchlorate. The X-ray crystal structure of the resulting complex revealed a monomeric copper(II) site, with the copper bound to the three ligand nitrogens in a relatively unusual meridional fashion, as well as a chloride and a water molecule. The sixth coordination site was, unexpectedly, occupied by a phenyl ring hydrogen atom.

Graphical abstractA new pyridine–amine ligand has been prepared and its reaction with copper perchlorate characterised. An interesting phenyl-H–Cu interaction was observed.Figure optionsDownload full-size imageDownload as PowerPoint slide