Two-Dimensional Homometallic- to a Three Dimensional Heterometallic Coordination Polymer: A Metalloligand Approach

Abstract

A metalloligand type of synthetic route has been followed to generate a novel heterometallic three-dimensional (3D)-coordination polymer containing Cu­(II) and trimethyltin as nodes. The first step of this synthetic path consisted of the preparation of a two-dimensional-coordination polymer of Cu­(II), [Cu­(μ-LH)₂]_<i>n</i> (<b>1</b>) (LH₂ = pyridine-2,5-dicarboxylic acid). The reaction of in situ generated <b>1</b> with Me₃SnCl afforded the heterometallic 3D-coordination polymer, [Cu­(Me₃Sn)₂(μ-L)₂]_<i>n</i> (<b>2</b>). The latter is a 4,4-connected polymer with a <i>sqc</i> topology. This 3D-framework contains a paddle-wheel-shaped core comprised of two heterometallic (Cu^II/Sn^IV) macrocycles