Magneto-Structural Characterization of Heterometallic NiII2MnII2/NiII2CoII2 Cubane Complexes with a Compartmental Ligand DOI
Anangamohan Panja, Erik Čižmár, Narayan Ch. Jana

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

We report a combined experimental and theoretical magneto-structural study of four heterometallic isostructural complexes: [Ni2Mn2(L)2(OAc)2{N(CN)2}]·5H2O (1), [Ni2Mn2(L)2(OAc)2(N3)2]·MeCN (2), [Ni2Mn2(L)2(OAc)2(NCS)2]·H2O (3), [Ni2Co2(L)2(OAc)2(NCS)2]·4H2O (4). These complexes were synthesized using compartmental Schiff base ligand, N,N'-bis(3-methoxy-5-methylsalicylidene)-2,2-dimethyl-1,3-diaminopropane (H2L), various pseudohalide ions. X-ray crystallography reveals cubane-like structures featuring {Ni2M2(μ3-O)4} (M = Mn or Co) core. The NiII centers invariably exhibit octahedral geometry, while MnII CoII ions adopt hepta-coordinated pentagonal bipyramidal geometries. Magnetic studies, ab initio calculations, BS-DFT analyses reveal competing ferromagnetic (FM) antiferromagnetic (AFM) exchange interactions. via an additional μ-O,O'-acetate ligand is FM, contrasting with mostly AFM interactions through the two μ3-O bridges. in 1-4 display moderate easy-plane single-ion anisotropy, complex 4 uniquely features easy-axis anisotropy DCo ≈ -23 cm-1. Moreover, field-induced slow magnetic relaxation was observed 4, governed by direct process. Notably, this first Ni2Mn2 cubane structure, only one prior example Ni2Co2 literature. Thus, uncovers properties rare systems highlighting as unique case significant magnetization relaxation, enriching molecular magnetism landscape.

Language: Английский

Semiquantitative Studies on the Correlations Between the Electrostatic Potential of Single DyIII Ion and its Energy Barriers in the Containing Dy Single Molecule Magnets† DOI
J.Z. Jiang, Yujie Zhu, Weinan Li

et al.

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

We reported a novel “Y”-shaped Mn III 5 Dy 3 complex with SMM behavior, and found that the U cal value of individual is highest when electrostatic potentials from two sides its equatorial plane are completely equivalent to each other.

Language: Английский

Citations

0
Trinuclear ZnII-LnIII Complexes: Single-Ion Magnet Behavior in the Zn2Dy Analogue DOI
Soumalya Roy,

Botan Li,

Ezhava Manu Manohar

et al.

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Language: Английский

Citations

0
Magneto-Structural Characterization of Heterometallic NiII2MnII2/NiII2CoII2 Cubane Complexes with a Compartmental Ligand DOI
Anangamohan Panja, Erik Čižmár, Narayan Ch. Jana

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

We report a combined experimental and theoretical magneto-structural study of four heterometallic isostructural complexes: [Ni2Mn2(L)2(OAc)2{N(CN)2}]·5H2O (1), [Ni2Mn2(L)2(OAc)2(N3)2]·MeCN (2), [Ni2Mn2(L)2(OAc)2(NCS)2]·H2O (3), [Ni2Co2(L)2(OAc)2(NCS)2]·4H2O (4). These complexes were synthesized using compartmental Schiff base ligand, N,N'-bis(3-methoxy-5-methylsalicylidene)-2,2-dimethyl-1,3-diaminopropane (H2L), various pseudohalide ions. X-ray crystallography reveals cubane-like structures featuring {Ni2M2(μ3-O)4} (M = Mn or Co) core. The NiII centers invariably exhibit octahedral geometry, while MnII CoII ions adopt hepta-coordinated pentagonal bipyramidal geometries. Magnetic studies, ab initio calculations, BS-DFT analyses reveal competing ferromagnetic (FM) antiferromagnetic (AFM) exchange interactions. via an additional μ-O,O'-acetate ligand is FM, contrasting with mostly AFM interactions through the two μ3-O bridges. in 1-4 display moderate easy-plane single-ion anisotropy, complex 4 uniquely features easy-axis anisotropy DCo ≈ -23 cm-1. Moreover, field-induced slow magnetic relaxation was observed 4, governed by direct process. Notably, this first Ni2Mn2 cubane structure, only one prior example Ni2Co2 literature. Thus, uncovers properties rare systems highlighting as unique case significant magnetization relaxation, enriching molecular magnetism landscape.

Language: Английский

Citations

0