EPR and optical-absorption studies of Cu2+-doped Zn(NH2(CH2)3NHOH)2Ni(CN)4 single crystals

被引:0
作者
H. Paşaoĝlu
B. Karabulut
G. Kaştaş
R. Tapramaz
A. Karadaĝ
机构
[1] Ondokuz Mayis University,Faculty of Art and Sciences, Department of Physics
[2] Gazi Osmanpasa University,Department of Chemistry, Faculty of Sciences
来源
Applied Magnetic Resonance | 2006年 / 30卷
关键词
Electron Paramagnetic Resonance; Electron Paramagnetic Resonance Spectrum; Host Lattice; Crystal Field Parameter; Powder Spectrum;
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摘要
Electron paramagnetic resonance of Cu2+-doped catena-trans-bis(N-(2-hydroxyethyl)-ethylenediamine) zinc(II)-tetra-μ-cyanonicelate(II) [Zn(NH2(CH2)3NHOH)2Ni(CN)4] single crystals and powder are examined at room temperature. The spectra show the substitution of the Zn2+ ion with the Cu2+ ion. The crystal field around the Cu2+ ion is nearly axial. There is a single paramagnetic site withgxx=2.073,gyy=2.060,gzz=2.248,Axx=40.5 G,Ayy=50.8 G,Azz=172.0 G. The ground-state wave function is an admixture of dx2−y2 and dz2 states. The optical-absorption studies show two bands at 320 nm (31250 cm−1) and 614 nm (16286 cm−1) which confirm the axial symmetry. The crystal field parameters and the wave function are determined.
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页码:75 / 83
页数:8
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