EPR study of gamma irradiated arsanilic acid single crystal

Karabulut, Bünyamin; Tapramaz, Recep

doi:10.1016/s0969-806x(98)00348-x

Cited by 50 publications

(14 citation statements)

References 12 publications

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“…where i, j, k, and θ represent x-, y-, z-axes, and the rotation angle, respectively, which is used to resolve the spectra [22]. The EPR spectra of vanadyl complexes can be satisfactorily explained in terms of an unpaired electron (S = 1/2) coupled with a vanadium nucleus (I = 7/2).…”

Section: Resultsmentioning

confidence: 99%

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EPR Study of VO²⁺ Doped Diammonium Tricadmium Tetrakis (Sulfate) Pentahydrate [(NH₄)₂Cd₃(SO₄)₄ ∙ 5H₂O] Single Crystals

Kartal

Karabulut

Bozkurt

2010

Zeitschrift Für Naturforschung A

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Electron paramagnetic resonance (EPR) studies are carried out on vanadyl (VO 2+ ) ions in diammonium tricadmium tetrakis (sulfate) pentahydrate single crystals at room temperature. The EPR spectra of a single crystal exhibit resonance signals characteristic to VO 2+ ions. The analysis of EPR spectra indicates that the VO 2+ ions in single crystals show two magnetically inequivalent VO 2+ sites in distinct orientations occupying substitutional positions in the lattice and showing very high angular dependence. They form in octahedral coordination with tetragonal compression with C 4v symmetry. The spin Hamiltonian parameters are determined, and these parameters have been used to estimate the bonding coefficients of the VO 2+ ion in a diammonium tricadmium tetrakis (sulfate) pentahydrate lattice. The parallel and perpendicular components of axially symmetric g and hyperfine (A) tensors are evaluated and the results are discussed and compared with previous reports.

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Section: Resultsmentioning

confidence: 99%

“…which includes only electronic Zeeman and hyperfine interactions, respectively [22]. Quadrupol and nuclear Zeeman terms are not included in (2) due to the smaller magnitudes of these interactions.…”

Section: Resultsmentioning

confidence: 99%

EPR Study of VO²⁺ Doped Diammonium Tricadmium Tetrakis (Sulfate) Pentahydrate [(NH₄)₂Cd₃(SO₄)₄ ∙ 5H₂O] Single Crystals

Kartal

Karabulut

Bozkurt

2010

Zeitschrift Für Naturforschung A

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“…In order to find the g and hyperfine values, we have used an iterative numerical technique described in ref. 13. g and A tensors are constructed and diagonalized to find principal values and are found to be nearly axially symmetric.…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2006

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Electron paramagnetic resonance of Cu2--doped catena-trans-bis(N-(2-hydroxyethyl)-ethylenediamine) zinc(II)-tetra-p.-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 Zn 2 § ion with the Cu :+ ion. The crystal field around the Cu 2+ ion is nearly axial. There is a single paramagnetic site with g.~, = 2.073, gyr = 2.060, gz.-= 2.248, A~, = 40.5 G, A. = 50.8 G, A= = 172.0 G. The groundstate wave function is an admixture of dx~_y-, and di-, states. The optical-absorption studies show two bands at 320 nm (31250 cm -~) and 614 nm (16286 cm-t), which confirm the axial symmetry. The crystal field parameters and the wave function are determined.

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“…If the system is anisotropic, i.e. its properties depend on the orientation of the applied (external) magnetic field, then the positions of the lines and the distance between two adjacent lines (hyperfine splitting constant) change for each angle in the recorded EPR spectrum [12,13]. Hence, at some orientations, the lines overlap and cause the number of lines to decrease (Fig.…”

Section: Epr Studymentioning

confidence: 99%

“…4. Least squares technique was used for curve fitting to obtain principal values (eigenvalues) and direction cosines (eigenvectors) of the tensors [13]. The results show that the local symmetry of the Cu(II) ion is rhombic and the Cu(II) ion has two sites in the complex.…”

Section: Epr Studymentioning

confidence: 99%

Crystal Structure and EPR Investigation of Pyrazinamide Containing Copper (II) 2-Nitrobenzoate Single Crystal

et al. 2016

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The crystal structure and paramagnetism in the pyrazinamide containing copper(II) 2-nitrobenzoate single crystal were investigated using X-ray diffraction, Fourier-transform infrared spectroscopy, and electron paramagnetic resonance techniques. X-ray diffraction analysis shows that the complex crystallizes in monoclinic system having two molecules in the unit cell. After using curve fitting method to the electron paramagnetic resonance spectra, anisotropic g and hyperfine A tensors were obtained. The local symmetry, spin Hamiltonian parameters, and molecular bonding coefficients of the paramagnetic Cu 2+ ion were determined. Perturbation approach was applied to the spin Hamiltonian to calculate the g and A values.

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EPR study of gamma irradiated arsanilic acid single crystal

Cited by 50 publications

References 12 publications

EPR Study of VO²⁺ Doped Diammonium Tricadmium Tetrakis (Sulfate) Pentahydrate [(NH₄)₂Cd₃(SO₄)₄ ∙ 5H₂O] Single Crystals

EPR Study of VO²⁺ Doped Diammonium Tricadmium Tetrakis (Sulfate) Pentahydrate [(NH₄)₂Cd₃(SO₄)₄ ∙ 5H₂O] Single Crystals

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

Crystal Structure and EPR Investigation of Pyrazinamide Containing Copper (II) 2-Nitrobenzoate Single Crystal

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EPR study of gamma irradiated arsanilic acid single crystal

Cited by 50 publications

References 12 publications

EPR Study of VO2+ Doped Diammonium Tricadmium Tetrakis (Sulfate) Pentahydrate [(NH4)2Cd3(SO4)4 ∙ 5H2O] Single Crystals

EPR Study of VO2+ Doped Diammonium Tricadmium Tetrakis (Sulfate) Pentahydrate [(NH4)2Cd3(SO4)4 ∙ 5H2O] Single Crystals

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

Crystal Structure and EPR Investigation of Pyrazinamide Containing Copper (II) 2-Nitrobenzoate Single Crystal

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EPR Study of VO²⁺ Doped Diammonium Tricadmium Tetrakis (Sulfate) Pentahydrate [(NH₄)₂Cd₃(SO₄)₄ ∙ 5H₂O] Single Crystals

EPR Study of VO²⁺ Doped Diammonium Tricadmium Tetrakis (Sulfate) Pentahydrate [(NH₄)₂Cd₃(SO₄)₄ ∙ 5H₂O] Single Crystals