| Title | Dependence of the stability of lanthanide β-dicarbonyl complexes on the metal—ligand bond energy |
| Publication Type | Journal Article |
| Year of Publication | 2019 |
| Authors | Mishchenko, AM, Trunova, EK |
| Abbreviated Key Title | Dopov. Nac. akad. nauk Ukr. |
| DOI | 10.15407/dopovidi2019.04.074 |
| Issue | 4 |
| Section | Chemistry |
| Pagination | 74-80 |
| Date Published | 04/2019 |
| Language | Russian |
| Abstract | The formation constants of the lanthanide complexes with acetylacetone, methyl, and ethyl acetoacetate are determined by pH-potentiometric titration in a water-ethanol solution. Their stability is shown to correlate with the energy of the metal–ligand ionic bond calculated using the semiempirical Sparkle/PM7 method. Higher values of the overall formation constants of the lanthanide complexes with β-ketoesters are caused by the strengthening of the metal–ligand electrostatic interaction due to an increase of the negative charge on the ligand carbonyl oxygen atoms. |
| Keywords | formation constants, ionic bonding, lanthanide complexes, semiempirical calculations, β-dicarbonyl ligands |
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