In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Two cobalt monophosphonates: Syntheses, structures and magnetic properties, published in 2013-09-01, which mentions a compound: 2402-95-1, mainly applied to hydrothermal preparation crystal structure magnetic property cobalt hydroxypyridinephosphonate complex, COA of Formula: C5H4ClNO.
Hydrolysis of di-Et 6-chloro-2-pyridinephosphonate in HCl solution affords 6-hydroxy-2-pyridinephosphonic acid (H2hppa 1). In the structure, extensive hydrogen bonding interactions link the phosphonic acid mols. into a two-dimensional network. Reactions of H2hppa and cobalt acetate under hydrothermal conditions result in a new cobalt phosphonate Co(hppa)(H2O) (2). Compound 2 shows a layer structure, in which {Co2O2} dimers are connected through the corner-sharing of {CoO5N} octahedra and {PO3C} tetrahedra, forming an inorganic double-layer. Introduction of a second ligand (1,4-bis(imidazol-1-ylmethyl)benzene, L (8)) in the reaction system, compound [Co(hppa)(L)0.5(H2O)]·H2O (3) was obtained. In this structure, Co2+ ions are bridged by O-P-O bridges into an inorganic layer and the layers are pillared up by 1,4-bis(imidazol-1-ylmethyl)benzene. Magnetic study suggests that the existence of weak ferromagnetic coupling between Co2+ ions in the {Co2O2} unit for 2. For compound 3, O-P-O bridges mediate very weak antiferromagnetic interactions.
Compound(2402-95-1)COA of Formula: C5H4ClNO received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(2-Chloropyridine 1-oxide), if you are interested, you can check out my other related articles.
Reference:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem