1. Spojine 2-aminopiridin-3-ola s prehodnimi kovinami
- Author
-
Kožuh, Zala and Petriček, Saša
- Subjects
2-aminopiridin-3-ol ,cobalt(II) chloride ,hydroxypyridines ,coordination compounds ,2-aminopyridin-3-ol ,kobaltov(II) klorid ,koordinacijske spojine ,hidroksipiridini - Abstract
2-aminopiridin-3-ol je organska heterociklična molekula z molekulsko formulo C5H6N2O. V molekuli sta dva dušikova in en kisikov atom, zato se molekula, njen anion ali kation, lahko koordinirajo na centralni atom ali ion v kompleksnih spojinah. Pregledali smo strukture v bazi podatkov CSD in ugotovili, da ni podatkov za komplekse prehodnih kovin z 2-aminopiridin-3-olom. Našli smo le strukturo renijevega kompleksa z deprotonirano obliko 2-aminopiridin-3-ola, 2-amino-3-oksipiridinom. V ostalih spojinah je 2-aminopiridin-3-ol protoniran in 2-amino-3-hidroksipiridinijev ion tvori soli s kompleksnimi anioni prehodnih kovin. Za primerjavo so prikazane še strukture kompleksov kobaltovega klorida s hidroksipiridini: 3-hidroksipiridin-2-onom, 3-hidroksipiridinom in 2-hidroksipiridinom. Našteti hidroksipiridini se lahko vežejo na centralni ion v kompleksih na podoben način kot pričakujemo za 2-aminopiridin-3-ol. Podobno kot 2-aminopiridin-3-ol tudi ti ligandi tvorijo vodikove vezi, ki stabilizirajo strukture spojin. 2-aminopyridin-3-ol is an organic heterocyclic compound with molecular formula C5H6N2O. In molecule there are two N- and one O-donor atoms, therefore molecule, its anion or cation could coordinate to a central atom or ion in complexes. We examined the structures in the CSD database and found that there are no data of transition metal complexes with 2-aminopyridin3-ol. We found only the structure of a rhenium complex with the deprotonated form of 2-aminopyridin-3-ol, 2-amino-3-oxypyridine. In other compounds 2-aminopyridin-3-ol is protonated and 2-amino-3-hydroxypyridinium ion forms salts with complex anions of transition metals. For comparison, other structures of cobalt chloride with hydroxypyridines: 3-hydroxypyridine, 3-hxydroxypyridin-2-one and 2-hydroxypyridine are shown. The listed hydroxypyridines can bind to a central atom or ion in the complexes in a similar way as expected for 2-aminopyridin-3-ol. Similar to 2-aminopyridin-3-ol, these ligands form hydrogen bonds, which stabilise the structures of the compounds.
- Published
- 2021