Magnetic Properties of a Dinuclear Nickel(II) Complex with 2,6-Bis[(2-hydroxyethyl)methylaminomethyl]-4-methylphenolate
| Autor: | Masahiro Mikuriya, Andrew Ozarowski, J. Krzystek, Yukako Chiba, Hiroshi Sakiyama, Mikio Yamasaki, Katsuya Tone |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Spin states
010405 organic chemistry Dimer chemistry.chemical_element Zinc 010402 general chemistry 01 natural sciences 0104 chemical sciences Ion law.invention Inorganic Chemistry Nickel chemistry.chemical_compound Crystallography Nuclear magnetic resonance chemistry law Excited state Dimethylformamide Physical and Theoretical Chemistry Electron paramagnetic resonance |
| Zdroj: | Inorganic chemistry. 56(1) |
| ISSN: | 1520-510X |
| Popis: | Magnetic properties of dinuclear nickel(II) complex [Ni2(sym-hmp)2](BPh4)2·3.5DMF·0.5(2-PrOH) (1), where (sym-hmp)− is 2,6-bis[(2-hydroxyethyl)methylaminomethyl]-4-methylphenolate anion and DMF indicates dimethylformamide, were investigated using high-frequency and -field electron paramagnetic resonance (HFEPR). To magnetically characterize the mononuclear nickel(II) species forming the dimer, its two dinuclear zinc(II) analogues, [Zn2(sym-hmp)2](BPh4)2·3.5DMF·0.5(2-PrOH) (2) and [Zn2(sym-hmp)2](BPh4)2·2acetone·2H2O (2′), were prepared. One of them (2′) was structurally characterized by X-ray diffractometry and doped with 5% mol nickel(II) ions to prepare a mixed crystal 3. From the HFEPR results on complex 1 obtained at 40 K, the spin Hamiltonian parameters of the first excited spin state (S = 1) of the dimer were accurately determined as |D1| = 9.99(2) cm–1, |E1| = 1.62(1) cm–1, and g1 = [2.25(1), 2.19(2), 2.27(2)], and for the second excited spin state (S = 2) at 150 K estimated as |D2| ≈ 3.5 cm–1. Fro... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|