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Wei W, Liu Z, Wei R, Liang C, Feng XZ, Han GC. Synthesis, crystal structure and anticorrosion performance of Zn(II) and Ni(II) complexes. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129452] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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You Z, Prsa K, Mutschler J, Herringer SN, Wang J, Luo Y, Zheng B, Decurtins S, Krämer KW, Waldmann O, Liu SX. Formation of Defect-Dicubane-Type Ni II 2Ln III 2 (Ln = Tb, Er) Clusters: Crystal Structures and Modeling of the Magnetic Properties. ACS OMEGA 2021; 6:483-491. [PMID: 33458500 PMCID: PMC7807793 DOI: 10.1021/acsomega.0c04930] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/26/2020] [Indexed: 06/12/2023]
Abstract
In the field of molecular nanoclusters, cubane and defect-dicubane, or butterfly structures, are typical examples of tetranuclear metal core architectures. In this work, a halogenated and anionic Schiff-base ligand (L2-) is utilized as it is predisposed to chelate within a cluster core to both 3d and 4f metal ions, in different binding configurations (H2L = 4-chloro-2-(2-hydroxy-3-methoxybenzyliden amino)phenol). The phenolate oxygen atoms of the deprotonated ligand can act in μ-O and μ3-O bridging binding modes for the intramolecular assembly of metal ions. Based on that, two tetranuclear and isostructural compounds [Ni2Tb2(L)4(NO3)2(DMF)2]·2CH3CN (1) and [Ni2Er2(L)4(NO3)2(DMF)2]·0.5CH3CN (2) were synthesized and structurally characterized. Magnetic susceptibility and magnetization data indicate the occurrence of dominant intramolecular ferromagnetic interactions between the spin centers. Particular emphasis is given to the theoretical description of the magnetic behavior, taking into account the Ln-Ni and Ni-Ni coupling paths and the magnetic anisotropy of the LnIII and NiII ions. The study is distinguished for its discussion of two distinct models, whereby model A relies on the uniaxial B 20 Stevens term describing the lanthanide anisotropy and model B is based on point-charge model calculations. Importantly, the physical meaning of the obtained parameters for both models was critically scrutinized.
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Affiliation(s)
- Zhonglu You
- Department
of Chemistry and Chemical Engineering, Liaoning
Normal University, Dalian 116029, P. R. China
| | - Krunoslav Prsa
- Physikalisches
Institut, Universität Freiburg, Hermann-Herder-Strasse 3, Freiburg D-79104, Germany
| | - Julius Mutschler
- Physikalisches
Institut, Universität Freiburg, Hermann-Herder-Strasse 3, Freiburg D-79104, Germany
| | - Susan N. Herringer
- Departement
für Chemie und Biochemie, Universität
Bern, Freiestrasse 3, Bern CH-3012, Switzerland
| | - Jiaqi Wang
- Department
of Chemistry and Chemical Engineering, Liaoning
Normal University, Dalian 116029, P. R. China
| | - Yingying Luo
- Department
of Chemistry and Chemical Engineering, Liaoning
Normal University, Dalian 116029, P. R. China
| | - Boyang Zheng
- Department
of Chemistry and Chemical Engineering, Liaoning
Normal University, Dalian 116029, P. R. China
| | - Silvio Decurtins
- Departement
für Chemie und Biochemie, Universität
Bern, Freiestrasse 3, Bern CH-3012, Switzerland
| | - Karl W. Krämer
- Departement
für Chemie und Biochemie, Universität
Bern, Freiestrasse 3, Bern CH-3012, Switzerland
| | - Oliver Waldmann
- Physikalisches
Institut, Universität Freiburg, Hermann-Herder-Strasse 3, Freiburg D-79104, Germany
| | - Shi-Xia Liu
- Departement
für Chemie und Biochemie, Universität
Bern, Freiestrasse 3, Bern CH-3012, Switzerland
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Fiorini G, Carrella L, Rentschler E, Alborés P. Counter-complementarity control of the weak exchange interaction in a bent {Ni(ii)3} complex with a μ-phenoxide-μ-carboxylate double bridge. NEW J CHEM 2019. [DOI: 10.1039/c9nj03574e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a combined computational and experimental study of a weak exchange interaction in a bent {Ni(ii)3} complex controlled by counter-complementarity.
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Affiliation(s)
- Guillermo Fiorini
- Departamento de Química Inorgánica
- Analítica y Química Física/INQUIMAE (CONICET)
- Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires
- C1428EHA Buenos Aires
- Argentina
| | - Luca Carrella
- Johannes Gutenberg University Mainz Chemistry
- Institute of Inorganic and Analytical Chemistry
- 55128 Mainz
- Germany
| | - Eva Rentschler
- Johannes Gutenberg University Mainz Chemistry
- Institute of Inorganic and Analytical Chemistry
- 55128 Mainz
- Germany
| | - Pablo Alborés
- Departamento de Química Inorgánica
- Analítica y Química Física/INQUIMAE (CONICET)
- Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires
- C1428EHA Buenos Aires
- Argentina
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