3D non porous and thermally labile nickel(II) and manganese(II) complexes with hetero donor ligands: Synthesis, X-ray single crystal structure, thermal and luminescent study

Three coordination complexes of formula [Ni(L1)2(H2O)4].4H2O (1), [Mn(L2)2(H2O)4] (2) and [Mn(L2)2(H2O)2]n (3) [L1H = 6-methylpyridine-3-carboxylic acid, L2H = 3-(3-pyridyl)acrylic acid] have been synthesized and structurally characterized by X-ray single crystal analysis. A 3D network is achieved through H-bonding in 1 and 2, while crystal packing of complex 3 shows a 3D supramolecular coordination polymer. Thermal properties have been investigated by thermogravimetric analysis. Luminescence study features the presence of LMCT and metal purterbed ligand centered emission bands.

Graphical abstractThree coordination networks of nickel(II) and manganese(II) have been synthesized with N- and O-donor ligands. X-ray single crystal structure analysis shows the formation of 3D network by H-bonding for two complexes. Crystal packing of another complex reveals the existence of 3D supramolecular coordination polymeric structure. Thermal and luminescence properties for all the complexes study have been investigated.Figure optionsDownload full-size imageDownload as PowerPoint slide