Acta Crystallogr B Struct Sci Cryst Eng Mater 2021 Apr 27;77(Pt 2):193-204. Epub 2021 Feb 27.
Centre for Structural Sciences, Research Centre for Natural Sciences, Magyar tudósok körútja 2, Budapest, H-1117, Hungary.
The coordination properties of four hydroxypyridinecarboxylates, designed for the treatment of iron-overloading conditions as bidentate O,O'-donor ligands, have been studied with Zn in the solid state. The coordination compounds [Zn(A1)(HO)] (1), [Zn(A2)(HO)] (2), [Zn(A3)(HO)]·2HO (3) and [Zn(B1)(HO)]·4HO (4), where the ligands are 1-methyl-4-oxidopyridinium-3-carboxylate (A1, CHNO), 1,6-dimethyl-4-oxidopyridinium-3-carboxylate (A2, CHNO), 1,5-dimethyl-4-oxido-pyridinium-3-carboxylate (A3, CHNO) and 1-methyl-3-oxidopyridinium-4-carboxylate (B1, CHNO), have been synthesized and analysed by single-crystal X-ray diffraction. The ligands were chosen to probe (i) the electronic effects of inverting the positions of the O-atom donor groups (i. Read More