1. Magnetic anisotropy of Cr(III) ions in polymeric oxalate complexes as revealed by HF-ESR spectroscopy
- Author
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Yulia Krupskaya, Vladislav Kataev, Lidija Androš, Dijana Žilić, and Bernd Büchner
- Subjects
Chemistry ,Analytical chemistry ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,law.invention ,SQUID ,Inorganic Chemistry ,Crystallography ,Magnetic anisotropy ,Paramagnetism ,Bipyridine ,chemistry.chemical_compound ,Chromium ,Magnetization ,law ,Cr(III) ,metal-organic complex ,EPR ,ESR ,high field ,high frequency ,magnetic anisotropy ,zero-field splitting ,0210 nano-technology ,Electron paramagnetic resonance ,Spectroscopy - Abstract
Two new Cr(III) paramagnetic polymeric complexes: {[CaCr2(phen)2(C2O4)4]·0.33H2O} n (CrPhen) and {[CaCr2(bpy)2(C2O4)4]·0.83H2O} n (CrBpy), where phen = 1,10-phenanthroline and bpy = 2,2 $$'$$ -bipyridine, have been studied by high-field high-frequency electron spin resonance (HF-ESR) spectroscopy. From the oriented powder spectra, recorded in the frequency range 83–332 GHz in magnetic fields up to 16 T, the spin-Hamiltonian parameters, $$g$$ , $$D$$ and $$E$$ , have been obtained. Both chromium complexes have a small negative (easy axis) magnetic anisotropy $$|D
- Published
- 2015