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Zinc complexes of 6-methyl-2-pyridinecarboxylic acid. Crystal structure of [Zn(MeC5H3NCOO)2(H2O)] · H2O
Authors:Josefina Pons  Ricard March  Josep Ros
Abstract:Reaction of Zn(AcO)2 · 2H2O with 6-methyl-2-pyridinecarboxylic acid (L) yielded a new compound Zn(MeC5H3NCOO)2(H2O)] · H2O. This complex was characterised by elemental analyses, conductivity measurements, infrared, 1H and 13C{1H} NMR spectroscopies and single-crystal X-ray diffraction. The crystal structure consists of discrete molecules involving a pentacoordinated Zn atom with a geometry intermediate between a trigonal bipyramid and a square pyramid and with the two Npy atoms occupying the apical sites. Treatment of the complex Zn(MeC5H3NCOO)2(H2O)] · H2O with 2,2-bipyridine (bpy) produced Zn(MeC5H3NCOO)2(bpy)]. The metallic atom in this complex displays a distorted octahedral geometry and is coordinated to two ligands (L) via the pyridine nitrogen and the carbonyl oxygen atoms and to one 2,2-bypyridine (bpy).
Keywords:Zinc complexes  Picolinate complexes  Chelate complexes  Crystal structure
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