Facile adaptation of 1D Mn(ii) chain motifs to form 3D azo-pyridine-based coordination polymers

Abstract

We report the synthesis of a simple 1D Mn-azopyridine-based coordination polymer, poly-[Mn^II(NO₃)₂(OH₂)₂(azopy)₂]·2MeCN (1) (azopy = 4,4′-azobis(pyridine)) and its use as a convenient feedstock to afford two 3D coordination polymers, namely: poly-[Mn^II(azopy)₂(CNAgCN)₄] (2), and poly-[Mn^II₂(pda)(Hpda)₂(azopy)₂(OH₂)₂]·2MeCN (3), (pdaH₂ = 1,4-phenylenediacetic acid). The compounds have been characterised by elemental analysis, IR, PXRD, TGA and single crystal X-ray diffraction. Compound 1 is a 1D coordination polymer while 2 represents a 3-dimensional coordination polymer adopting 2-fold interpenetrated rutile (rtl) topology and 3 is a 5-connected 3-dimensional coordination polymer with boron nitride (bnn) topology.