Crystallochemistry of Ni(II) complexes based on pyridine-2,6-dicarboxylato and bulky N,N-donor ligands
| Autor: | Smolko, R., Kuchár, Juraj, Dušek, M., Falvello, Larry R., Černák, Juraj |
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| Přispěvatelé: | VEGA Agency (Slovakia), Ministerio de Ciencia e Innovación (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Popis: | Resumen del trabajo presentado a la XXVIII International Conference on Coordination and Bioinorganic Chemistry, celebrada en Smolenice (Slovakia) del 5 al 10 de junio de 2022. Penta-coordinated complexes of Ni(II) (S = 1) represent promising magnetically active materials. The synthetic strategy leading to penta-coordination may be based on using a combination of two- and three-donor voluminous ligands, e.g. N,N-donor chelating neoc (2,9-dimethyl-1,10-phenantroline), and O,N,O-donor pyridine-2,6-dicarboxylato(2-) (pdca) ligands. We have experimentally studied the aqueous-ethanolic systems formed of various Ni(II) salts, H2pdca and L being neoc, phen (1,10-phenantroline), bpy (2,2ˈ-bipyridine) and dtbpy (4,4ˈ-di-tert-butyl-2,2ˈ-bipyridine). We have isolated and characterized five different Ni(II) complexes, four of them being molecular and one ionic. All molecular complexes are built up of complex molecules with the general formula [Ni(pdca)(L)(H2O)]; however, all these complexes contain hexacoordinated Ni(II) atoms. In addition, the crystal structures of these four complexes comprise various solvate molecules. The fifth ionic complex also contains hexacoordinated Ni(II) atoms and is built up of [Ni(phen)2(H2O)2]2+ complex cations and [Ni(pdca)2]2- complex anions and solvate water molecules. This work was supported by grants: APVV-18-0016, VEGA 1/0189/22, VVGS-PF-2021-1769, VVGS-2020-1657, and also by Grant PGC2018–093451-B-I00 (Spain). |
| Databáze: | OpenAIRE |
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