Synthesis, structure, and magnetic properties of a new binuclear Ni(II) complex supported by 1,4,8-triazacycloundecane
| Autor: | Reza Loloee, Ferman A. Chavez, Aramice Y. S. Malkhasian, Benjamin E. Kucera, Matthew J. Tiza, Piotr L. Pawlak, Bojan Sjlivic |
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| Rok vydání: | 2008 |
| Předmět: |
Ligand
Chemistry chemistry.chemical_element Atmospheric temperature range Inorganic Chemistry Metal Crystallography Nickel Ferromagnetism visual_art Octahedral molecular geometry X-ray crystallography Materials Chemistry visual_art.visual_art_medium Macrocyclic ligand Physical and Theoretical Chemistry |
| Zdroj: | Inorganic Chemistry Communications. 11:1023-1026 |
| ISSN: | 1387-7003 |
| DOI: | 10.1016/j.inoche.2008.05.014 |
| Popis: | A new synthetic binuclear nickel(II) compound ([Ni2(tacud)2(μ-H2O)(μ-Cl)2]Cl2 (1); tacud = 1,4,8-triazacycloundecane) is reported. Compound 1 contains two Ni(II) ions bridged by two chloro and one aqua ligand resulting in a short Ni···Ni distance of 3.0187(10) A. Each nickel is capped by terminal tacud ligands and possesses distorted octahedral geometry. This compound exhibits a new structural motif for metal complexes supported by tacud. Compound 1 exhibits two solvent dependent transitions in the UV–vis spectrum. Variable temperature SQUID magnetic susceptometry studies on 1 indicate mild ferromagnetism exists at room temperature (μeff = 4.78 μB) which increases upon temperature lowering. Magnetic analysis of 1 in the temperature range 2–300 K confirm weakly ferromagnetic behavior with J = +2.28 cm−1. |
| Databáze: | OpenAIRE |
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