title: Synthesis and crystal structure of 2-amino-3-hydroxypyridinium dioxido(pyridine-2,6-dicarboxylato-κ³O²,N,O⁶)vanadate(V) and its conversion to nanostructured V₂O₅.
abstract: 2-Amino-3-hydroxypyridinium dioxido(pyridine-2,6-dicarboxylato-κ(3)O(2),N,O(6))vanadate(V), (C5H7N2O)[V(C7H3NO4)O2] or [H(amino-3-OH-py)][VO2(dipic)], (I), was prepared by the reaction of VCl3 with dipicolinic acid (dipicH2) and 2-amino-3-hydroxypyridine (amino-3-OH-py) in water. The compound was characterized by elemental analysis, IR spectroscopy and X-ray structure analysis, and consists of an anionic [VO2(dipic)](-) complex and an H(amino-3-OH-py)(+) counter-cation. The V(V) ion is five-coordinated by one O,N,O'-tridentate dipic dianionic ligand and by two oxide ligands. Thermal decomposition of (I) in the presence of polyethylene glycol led to the formation of nanoparticles of V2O5. Powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM) were used to characterize the structure and morphology of the synthesized powder.
authors: Department of Chemistry, Yazd Branch, Islamic Azad University, Yazd, Iran.
authors: Ali
authors: A
authors: Hejrani-Dalir
authors: Department of Chemistry, Yazd Branch, Islamic Azad University, Yazd, Iran.
authors: Masumeh
authors: M
authors: Tabatabaee
authors: Department of Chemistry, Yazd Branch, Islamic Azad University, Yazd, Iran.
authors: Ali
authors: A
authors: Sheibani
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D008024:Ligands; D015394:Molecular Structure; D049329:Nanostructures; D010848:Picolinic Acids / Q000737:chemistry*; D014638:Vanadates / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: C000598894:2-amino-3-hydroxypyridinium dioxido(pyridine-2,6-dicarboxylato-kappa(3)O(2),N,O(6))vanadate(V); D056831:Coordination Complexes; D008024:Ligands; D010848:Picolinic Acids; D014638:Vanadates
keywords: V2O5 nanostructure; crystal structure; dipicolinate ligand; vanadium(V) complex