Single and double quantum transitions in the multi-frequency continuous wave electron paramagnetic resonance (cwEPR) of three six co-ordinate nickel(II) complexes: [Ni(EtL)2(Me5dien)] and [Ni(5-methylpyrazole)6]X2, X=(ClO4)- or (BF4)-. The single crystal X-ray structure at room temperature of [Ni(5-methylpyrazole)6](ClO4)2

1998 ◽  
Vol 94 (19) ◽  
pp. 3019-3025 ◽  
Author(s):  
David Collison ◽  
Madeleine Helliwell ◽  
Victoria M. Jones ◽  
Frank E. Mabbs ◽  
Eric J. L. McInnes ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Single Crystal ◽  
Room Temperature ◽  
Continuous Wave ◽  
Double Quantum ◽  
Paramagnetic Resonance ◽  
X Ray ◽  
Quantum Transitions ◽  
Electron Paramagnetic

Persistent P-Stabilized Boryl Radicals with Bulky Substituents at Boron

Synthesis ◽  
2018 ◽  
Vol 50 (18) ◽  
pp. 3671-3678
Author(s):  
Didier Bourissou ◽  
Amos Rosenthal ◽  
Sonia Mallet-Ladeira ◽  
Ghenwa Bouhadir
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Room Temperature ◽  
Electron Paramagnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
X Ray Diffraction ◽  
Paramagnetic Resonance ◽  
X Ray ◽  
Radical Reactivity ◽  
Different Types ◽  
Electron Paramagnetic

Two new P-stabilized boryl radicals [Ph2P(naph)BAr] (Ar = Tip and Ter) have been prepared and characterized by electron paramagnetic resonance spectroscopy. These radicals are persistent for several days in solution at room temperature. The high steric congestion at boron does not prevent radical reactivity. Two different types of dimerization equilibrium have been observed. The structures of the dimers have been unambiguously established by X-ray diffraction crystallography.

Continuous-Wave Single-Crystal Electron Paramagnetic Resonance of Adsorption of Gases to Cupric Ions in the Zn(II)-Doped Porous Coordination Polymer Cu2.965Zn0.035(btc)2

2016 ◽  
Vol 120 (48) ◽  
pp. 27399-27411 ◽  
Author(s):  
Stefan Friedländer ◽  
Petko St. Petkov ◽  
Felix Bolling ◽  
Anastasia Kultaeva ◽  
Winfried Böhlmann ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Coordination Polymer ◽  
Single Crystal ◽  
Continuous Wave ◽  
Paramagnetic Resonance ◽  
Adsorption Of Gases ◽  
Porous Coordination Polymer ◽  
Crystal Electron ◽  
Electron Paramagnetic

scholarly journals SOPHE Computation on Alanine Single Crystal EPR Spectra

2011 ◽  
Vol 1 (1) ◽  
pp. 23
Author(s):  
Frida U Ermawati
Keyword(s):  
Single Crystal ◽  
Room Temperature ◽  
Continuous Wave ◽  
Simulation Software ◽  
Software Suite ◽  
Paramagnetic Resonance ◽  
System A ◽  
X Band ◽  
Band Spectra ◽  
Electron Paramagnetic

Simulation of X-band first-derivative continuous-wave electron paramagnetic resonance (CW-EPR) experimental spectra of g-irradiated ℓ-α-alanine single crystal has been carried out. The aim was to confirm the existence of radical induced by irradiation in the system. A SOPHE computer simulation software suite (v. 1.1.3) was utilized for that purpose. Six different X-band spectra measured from a number of defined crystal orientations to the external magnetic field B were recorded and simulated. The “axial” spectra (refer to the simulated spectra when the external B field was parallel to the crystal axes and that was measured at room temperature) confirm the simultaneous presence of the SAR, R2 and R3 radicals with the appropriate proportions. The “planar” spectra (refer to the simulated spectra when the B field was on the crystal planes), however, do not exactly fit to the experimental spectra. Together with the simulation outcomes, the problems that appear during the work, as well as the solutions proposed to overcome those problems are discussed.

Electron Paramagnetic Resonance Study of Cu 2+ in CdCa (CH3COO) 4 • 6H2O Single Crystal

2000 ◽  
Vol 55 (8) ◽  
pp. 729-732
Author(s):  
Hüsey in Kalkan ◽  
Ismet Senel
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Single Crystal ◽  
Room Temperature ◽  
Electron Paramagnetic Resonance Study ◽  
Temperature Dependent ◽  
Paramagnetic Resonance ◽  
Jahn Teller ◽  
Experimental Errors ◽  
Hamiltonian Parameters ◽  
Electron Paramagnetic

Abstract The Electron Paramagnetic Resonance spectra of Cu 2+ in CdCa (CH3COO)4 • 6H2O (cadmium calcium tetraacetate hexahydrate) powder and single crystal have been recorded at 300 and 133 K. The angular variation of the spectra indicated the substitution of the host Cd 2+ with Cu 2+ . The observed values of the g and A hyperfine tensors were found to be temperature dependent, and this dependence is discussed and explained on the basis of dynamic Jahn-Teller effects. The spin-Hamiltonian parameters were found to be axial symmetric at room temperature, whereas they showed deviations from axial symmetry at low temperature. The g and A tensors where found to be coaxial within the limits of experimental errors, and the ground state wave functions of the complex at 300 and 133 K have been constructed.

ON THE FERROMAGNETIC PHASE TRANSITION IN NANO ZnO:Mn BY ELECTRON PARAMAGNETIC RESONANCE

2009 ◽  
Vol 23 (15) ◽  
pp. 3221-3229 ◽  
Author(s):  
P. VINOTHA BOORANA LAKSHMI ◽  
B. RANGANATHAN ◽  
N. RAJKUMAR ◽  
K. RAMACHANDRAN
Keyword(s):  
Phase Transition ◽  
Electron Paramagnetic Resonance ◽  
Solid State ◽  
Room Temperature ◽  
Ferromagnetic Phase ◽  
X Ray Diffraction ◽  
Paramagnetic Resonance ◽  
X Ray ◽  
Ferromagnetic Phase Transition ◽  
Electron Paramagnetic

Nanocrystalline samples of Zn 1-x Mn x O (x = 0.0, 0.01, 0.02, 0.1 and 0.2) were synthesized by solid state reaction and characterized by X-ray diffraction and electron paramagnetic resonance (EPR) at room temperature. EPR studies showed an evidence of ferromagnetism above room temperature.

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