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Magneto-structural studies on a number of doubly end-on cyanate and azide bridged dinuclear nickel(ii) complexes with {N(3)O} donor Schiff base ligands

Two new doubly μ(1,1)-N(3) bridged (1 and 3) and six new doubly μ(1,1)-NCO bridged Ni(II) complexes (2, 4–8) with six different N(3)O donor Schiff base ligands have been synthesized and magneto-structurally characterized. All these neutral complex molecules are isostructural and constitute edge shar...

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Autores principales: Jana, Narayan Ch., Jagodič, Marko, Brandão, Paula, Patra, Moumita, Herchel, Radovan, Jagličić, Zvonko, Panja, Anangamohan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10088076/
https://www.ncbi.nlm.nih.gov/pubmed/37057262
http://dx.doi.org/10.1039/d3ra00737e
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author Jana, Narayan Ch.
Jagodič, Marko
Brandão, Paula
Patra, Moumita
Herchel, Radovan
Jagličić, Zvonko
Panja, Anangamohan
author_facet Jana, Narayan Ch.
Jagodič, Marko
Brandão, Paula
Patra, Moumita
Herchel, Radovan
Jagličić, Zvonko
Panja, Anangamohan
author_sort Jana, Narayan Ch.
collection PubMed
description Two new doubly μ(1,1)-N(3) bridged (1 and 3) and six new doubly μ(1,1)-NCO bridged Ni(II) complexes (2, 4–8) with six different N(3)O donor Schiff base ligands have been synthesized and magneto-structurally characterized. All these neutral complex molecules are isostructural and constitute edge sharing bioctahedral structures. Magnetic studies revealed that all these complexes exhibit ferromagnetic interaction through bridging pseudohalides with ferromagnetic coupling constant J being significantly higher for azide-bridged complexes than that of the cyanate analogues. This is consistent with the literature reported data and also the presence of polarizable π systems and two different N and O donor atoms in cyanate ion, rendering it a poor magnetic coupler in comparison to azide analogues. Although, the magneto-structurally characterized doubly μ(1,1)-N(3) bridged Ni(II) complexes are abundant, only few such complexes with μ(1,1)-bridging NCO(−) ions are reported in the literature. Remarkably, addition of these six new examples in this ever-growing series of doubly μ(1,1)-NCO bridged systems gives us an opportunity to analyse the precise magneto-structural correlation in this system, showing a general trend in which the J value increases with an increase in bridging angles. Therefore, the high degree of structural and magnetic resemblances by inclusion of six new examples in this series is the major achievement of the present work. An elaborate DFT study was performed resulting in magneto-structural correlation showing that nature and value of the J-parameter is defined not only by Ni–N(b)–Ni bond angles, but an important role is also played by the Ni1–Ni2–N(b)–X(t) dihedral angle (N(b) and X(t) are bridging N and terminal N or O atom of bridging ligands, respectively).
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spelling pubmed-100880762023-04-12 Magneto-structural studies on a number of doubly end-on cyanate and azide bridged dinuclear nickel(ii) complexes with {N(3)O} donor Schiff base ligands Jana, Narayan Ch. Jagodič, Marko Brandão, Paula Patra, Moumita Herchel, Radovan Jagličić, Zvonko Panja, Anangamohan RSC Adv Chemistry Two new doubly μ(1,1)-N(3) bridged (1 and 3) and six new doubly μ(1,1)-NCO bridged Ni(II) complexes (2, 4–8) with six different N(3)O donor Schiff base ligands have been synthesized and magneto-structurally characterized. All these neutral complex molecules are isostructural and constitute edge sharing bioctahedral structures. Magnetic studies revealed that all these complexes exhibit ferromagnetic interaction through bridging pseudohalides with ferromagnetic coupling constant J being significantly higher for azide-bridged complexes than that of the cyanate analogues. This is consistent with the literature reported data and also the presence of polarizable π systems and two different N and O donor atoms in cyanate ion, rendering it a poor magnetic coupler in comparison to azide analogues. Although, the magneto-structurally characterized doubly μ(1,1)-N(3) bridged Ni(II) complexes are abundant, only few such complexes with μ(1,1)-bridging NCO(−) ions are reported in the literature. Remarkably, addition of these six new examples in this ever-growing series of doubly μ(1,1)-NCO bridged systems gives us an opportunity to analyse the precise magneto-structural correlation in this system, showing a general trend in which the J value increases with an increase in bridging angles. Therefore, the high degree of structural and magnetic resemblances by inclusion of six new examples in this series is the major achievement of the present work. An elaborate DFT study was performed resulting in magneto-structural correlation showing that nature and value of the J-parameter is defined not only by Ni–N(b)–Ni bond angles, but an important role is also played by the Ni1–Ni2–N(b)–X(t) dihedral angle (N(b) and X(t) are bridging N and terminal N or O atom of bridging ligands, respectively). The Royal Society of Chemistry 2023-04-11 /pmc/articles/PMC10088076/ /pubmed/37057262 http://dx.doi.org/10.1039/d3ra00737e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Jana, Narayan Ch.
Jagodič, Marko
Brandão, Paula
Patra, Moumita
Herchel, Radovan
Jagličić, Zvonko
Panja, Anangamohan
Magneto-structural studies on a number of doubly end-on cyanate and azide bridged dinuclear nickel(ii) complexes with {N(3)O} donor Schiff base ligands
title Magneto-structural studies on a number of doubly end-on cyanate and azide bridged dinuclear nickel(ii) complexes with {N(3)O} donor Schiff base ligands
title_full Magneto-structural studies on a number of doubly end-on cyanate and azide bridged dinuclear nickel(ii) complexes with {N(3)O} donor Schiff base ligands
title_fullStr Magneto-structural studies on a number of doubly end-on cyanate and azide bridged dinuclear nickel(ii) complexes with {N(3)O} donor Schiff base ligands
title_full_unstemmed Magneto-structural studies on a number of doubly end-on cyanate and azide bridged dinuclear nickel(ii) complexes with {N(3)O} donor Schiff base ligands
title_short Magneto-structural studies on a number of doubly end-on cyanate and azide bridged dinuclear nickel(ii) complexes with {N(3)O} donor Schiff base ligands
title_sort magneto-structural studies on a number of doubly end-on cyanate and azide bridged dinuclear nickel(ii) complexes with {n(3)o} donor schiff base ligands
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10088076/
https://www.ncbi.nlm.nih.gov/pubmed/37057262
http://dx.doi.org/10.1039/d3ra00737e
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