Crystal structure of di-μ-hydroxido-bis-{aqua-[ethyl (1,10-phenanthrolin-3-yl)phospho-nato-κ2 N, N']copper(II)} hepta-hydrate

Abstract

In the title compound, [Cu₂(OH)₂{C₁₂H₇N₂(PO₃C₂H₅)}₂(H₂O)₂]·7H₂O, two Cu²⁺ cations are bridged by two hydroxide groups, forming a centrosymmetric binuclear complex. Each Cu²⁺cation is further coordinated by the N atoms of a bidentate ethyl (1,10-phenanthrolin-3-yl)phospho-nate anion and a water mol-ecule in a square-pyramidal geometry. In the crystal, a network of O-H⋯O hydrogen bonds involving the P(O)(O^-)(OEt) groups, bridging hydroxyl groups, coordinated and uncoordinated water mol-ecules generates a three-dimensional supra-molecular structure. The ethyl group exhibits disorder and was modelled over three sites with occupancies of 0.455, 0.384 and 0.161.

Keywords: copper(II); crystal structure; ethyl 1,10-phenanthrolin-3-yl-phospho­nate; hydrogen bonding.