Pentacoordinate Ni(II) complex: Synthesis, crystal structure and magnetism
Smolko, Richard ; Falvello, Larry R. (Universidad de Zaragoza) ; Ara, Irene (Universidad de Zaragoza) ; Titiš, Ján ; Boca, Roman ; Cernák, Juraj
Resumen: Ni(II) complex [Ni(na-dmdpa)] (H2(na-dmdpa) = 1,1′-((1E,1′E)-(((methylazanediyl)bis(propane-3,1iyl))bis(azaneylylidene))bis(methaneylylidene))bis
(naphthalen-2-ol) has been synthesized using Schiff-base type pentadentate ligand formed by condensation of 2-hydroxynaphthaldehyde with 3,3ˈ-diamino-N-methyldipropylamine. The crystal structure is built up of complex molecules [Ni(na-dmdpa)]. The Ni(II) centre exhibits pentacoordination and its coordination sphere is formed by deprotonated Schiff base acting as doubly chelating pentadentate dianionic ligand. Calculated τ value for complex [Ni(na-dmdpa)] indicates that the coordination polyhedron is an intermediate between trigonal bipyramid and square pyramid. Complex is stable at RT. From the magnetic study follows that the axial zero-field splitting parameter is significantly negative (D/hc = –51 cm-1) and the value of rhombicity is moderate (E/hc = 2.4 cm-1). Theoretical calculations support the magnetic experimental result. The out-of-phase component of the AC susceptibility is silent.
Idioma: Inglés
DOI: 10.1016/j.molstruc.2025.142198
Año: 2025
Publicado en: JOURNAL OF MOLECULAR STRUCTURE 1337 (2025), 142198
ISSN: 0022-2860
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.
Fecha de embargo : 2027-08-15
Exportado de SIDERAL (2025-10-09-13:25:51)
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(naphthalen-2-ol) has been synthesized using Schiff-base type pentadentate ligand formed by condensation of 2-hydroxynaphthaldehyde with 3,3ˈ-diamino-N-methyldipropylamine. The crystal structure is built up of complex molecules [Ni(na-dmdpa)]. The Ni(II) centre exhibits pentacoordination and its coordination sphere is formed by deprotonated Schiff base acting as doubly chelating pentadentate dianionic ligand. Calculated τ value for complex [Ni(na-dmdpa)] indicates that the coordination polyhedron is an intermediate between trigonal bipyramid and square pyramid. Complex is stable at RT. From the magnetic study follows that the axial zero-field splitting parameter is significantly negative (D/hc = –51 cm-1) and the value of rhombicity is moderate (E/hc = 2.4 cm-1). Theoretical calculations support the magnetic experimental result. The out-of-phase component of the AC susceptibility is silent.
Idioma: Inglés
DOI: 10.1016/j.molstruc.2025.142198
Año: 2025
Publicado en: JOURNAL OF MOLECULAR STRUCTURE 1337 (2025), 142198
ISSN: 0022-2860
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material. Fecha de embargo : 2027-08-15
Exportado de SIDERAL (2025-10-09-13:25:51)
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Record created 2025-10-02, last modified 2025-10-09