Crystal structure and EPR spectrum of dimeric di-μ-azide-bis[cyanide(N,N-diethylethylenediamine)]-copper(II), [Cu(N3)(NCO)(diEten)]2

1997 ◽  
Vol 27 (2) ◽  
pp. 129-135 ◽  
Author(s):  
O. E. Piro ◽  
E. E. Castellano ◽  
J. Zukerman-Schpector ◽  
C. A. De Simone ◽  
D. M. Martino ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Epr Spectrum

Crystal structure of bis[bis(1,4,7-triazacyclononane)nickel(III)] dithionate heptahydrate and its single-crystal EPR spectrum

1986 ◽  
Vol 25 (10) ◽  
pp. 1650-1654 ◽  
Author(s):  
Karl Wieghardt ◽  
Wolfgang Walz ◽  
Bernhard Nuber ◽  
Johannes Weiss ◽  
Andrej Ozarowski ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Epr Spectrum

Temperature Dependence of the Crystal Structure and EPR Spectrum of Bis(1,3,5-Trihydroxycyclohexane)copper(II) Tosylate. A Unified Interpretation Using a Model of Dynamic Vibronic Coupling

1996 ◽  
Vol 35 (25) ◽  
pp. 7419-7429 ◽  
Author(s):  
Joachim Bebendorf ◽  
Hans-Beat Bürgi ◽  
Eduard Gamp ◽  
Michael A. Hitchman ◽  
Angela Murphy ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Temperature Dependence ◽  
Vibronic Coupling ◽  
Epr Spectrum

scholarly journals Synthesis, Crystal Structure and Spectral Properties of Copper(II) 2-Chloronicotinato Complexes with N-Heterocyclic Ligands

2016 ◽  
Vol 15 (2) ◽  
pp. 190-199 ◽  
Author(s):  
Jozef Miklovič ◽  
Dušan Valigura ◽  
Ingrid Svoboda ◽  
Ján Moncol ◽  
Milan Mazúr
Keyword(s):  
Crystal Structure ◽  
Spectral Properties ◽  
Crystal Structure Analysis ◽  
Synthesis And Characterization ◽  
Epr Spectrum ◽  
Heterocyclic Ligands ◽  
Coordination Polyhedra ◽  
X Ray ◽  
Good Agreement

Abstract The synthesis and characterization of nine new copper(II) complexes [Cu(2-Clnic)2L2] (where 2-Clnic is 2-chloronicotinate anion, L is imidazole – Im, benzimidazole – Bim, furo[3,2-c]pyridine – FP, 2-methylfuro[3,2-c]pyridine – MFP, or [1]benzofuro[3,2-c]pyridine – BFP), [Cu(2-Clnic)2(INA)] (where INA is isonicotinamide), [Cu(2-Clnic)2(4-py)]·H2O (where 4-py is 4-methylpyridine) and [Cu2(2-Clnic)4(IQ)2] (where IQ is isoquinoline) are reported. The characterizations were based on elemental analysis, infrared, electronic and EPR spectra. The dimeric character of [Cu2(2-Clnic)4(IQ)2] is assumed on the EPR spectrum and the other spectral methods. The crystal structure of the [Cu(2-Clnic)2(Bim)2] and [Cu(2-Clnic)2(FP)2] complexes have been determined by X-ray crystal structure analysis. Both complexes exhibit the hexacoordination coordination polyhedra around copper atom that lies in the crystallographic center of symmetry. The distorted tetragonal-bipyramidal (4+2) arrangement is in good agreement with spectral data that have suggested an asymmetric chelate coordination of the carboxylic group.

Thiobenzamid-thiobenzimid-bromo-kupfer(II), [Cu(PhCSNH2)(PhCSNH)Br]2 / Thiobenzamide-thiobenzimide-bromo-copper(II), [Cu(PhCSNH2)(PhCSNH)Br]2

1989 ◽  
Vol 44 (8) ◽  
pp. 946-950 ◽  
Author(s):  
Pilar Souza ◽  
Agueda Arquero ◽  
Azucena García-Onrubia ◽  
Vicente Fernández ◽  
Ana María Leiva ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Susceptibility ◽  
Ir Spectrum ◽  
Title Compound ◽  
Monoclinic Space Group ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
Epr Spectrum ◽  
Absorption Bands ◽  
X Ray

The title compound 1 was obtained by the reaction of CuBr2 and thiobenzamide in methanol. Its magnetic susceptibility and its EPR spectrum show it to be a Cu(II) compound. The two different ligands PhCSNH2 (2) and [PhCSNH]- (3) show up by distinct absorption bands in the IR spectrum. The crystal structure of 1 was determined by X-ray diffraction (1289 observed, unique reflexions, R = 0.048). Crystal data: monoclinic, space group P21/n, Z = 2, a = 912.0(2), b = 1859.7(8), c = 1006.2(6) pm, β = 110.73(4)°. There are dimeric, centrosymmetric molecules in which the copper atoms are linked via the sulfur atoms of either 2 or 3, probably 3. The copper atoms show the coordination of a flattened tetrahedron.

Single crystal electron paramagnetic resonance study of Y2BaCuO5, a common impurity in the high temperature superconductor, YBa2Cu3O7

1992 ◽  
Vol 7 (3) ◽  
pp. 565-571 ◽  
Author(s):  
R.J. Barham ◽  
D.C. Doetschman
Keyword(s):  
Crystal Structure ◽  
Electron Paramagnetic Resonance ◽  
Single Crystal ◽  
Crystal Field ◽  
Electron Paramagnetic Resonance Study ◽  
Epr Spectrum ◽  
Paramagnetic Resonance ◽  
Crystal Forms ◽  
Crystal Electron ◽  
Electron Paramagnetic

Electron paramagnetic resonance (EPR) studies of pure Y2BaCuO5 in powder and single crystal forms and of YBa2Cu3O7−δ in powder and single crystal forms provide further evidence that it is Y2BaCuO5 that is the common green impurity found in many preparations of YBa2Cu3O7−δ as a powder or in pellet forms. Y2BaCuO5 tends to be excluded in the growth of YBa2Cu3O7−δ single crystals. A method is presented for the growth of Y2BaCuO5 crystals from a flux. An apparent discrepancy between the observed single crystal EPR anisotropy and the reported crystal structure is resolved in three independent ways from the Y2BaCuO5 Powder and single crystal EPR data. These results show that the EPR spectrum is a superposition of the spectra of the two differently oriented Cu sites in the unit cell and is not a spectral average of them. The temperature independence of the EPR spectrum between 150 K and 300 K is also consistent with there being no temperature dependent exchange averaging of the EPR spectra of the two sites in this range. The orientations of the Cu crystal field axes, as indicated by the g axes, are in agreement with the crystal structure. Crystal field splittings of the Cu d-orbitals are estimated from the measured g values and indicate an appreciable covalency in the Cu–O bonds. The linewidth and its anisotropy indicate a minor degree of exchange narrowing.

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