Electron delocalization and magnetic behavior in a single crystal of ilvaite, a mixed valence iron silicate

1987 ◽  
Vol 14 (2) ◽  
pp. 151-155 ◽  
Author(s):  
D. Ghosh ◽  
T. Kundu ◽  
S. Dasgupta ◽  
Subralā Ghose
Keyword(s):  
Single Crystal ◽  
Mixed Valence ◽  
Magnetic Behavior ◽  
Iron Silicate ◽  
Electron Delocalization

scholarly journals Single crystal growth by self-flux method of the mixed valence gold halides Cs2[AuIX2][AuIIIX4] (X=Br,I)

2012 ◽  
Vol 355 (1) ◽  
pp. 13-16 ◽  
Author(s):  
Scott C. Riggs ◽  
M.C. Shapiro ◽  
F. Corredor ◽  
T.H. Geballe ◽  
I.R. Fisher ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Single Crystal ◽  
Mixed Valence ◽  
Single Crystal Growth ◽  
Flux Method

Complex High-field Magnetic Behavior of TbCoIn5 Single-crystal

2004 ◽  
Vol 54 (S4) ◽  
pp. 327-330
Author(s):  
J. Prokleška ◽  
J. Vejpravová ◽  
V. Sechovský ◽  
Y. Isikawa
Keyword(s):  
Single Crystal ◽  
High Field ◽  
Magnetic Behavior

scholarly journals Tetramer Compound of Manganese Ions with Mixed Valence [MnII MnIII MnIV] and Its Spatial, Electronic, Magnetic, and Theoretical Studies

Crystals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 447 ◽  
Author(s):  
Cándida Pastor-Ramírez ◽  
Rafael Ulloa ◽  
Daniel Ramírez-Rosales ◽  
Hugo Vázquez-Lima ◽  
Samuel Hernández-Anzaldo ◽  
...  
Keyword(s):  
Mixed Valence ◽  
Magnetic Behavior ◽  
Local Geometry ◽  
Spectroscopic Techniques ◽  
Theoretical Studies ◽  
The Novel ◽  
Manganese Ions ◽  
Computational Calculations ◽  
Valence Electrons ◽  
Coordination Reaction

Using different spectroscopic techniques and computational calculations, we describe the structural and electromagnetic relationship that causes many interesting phenomena within a novel coordination compound with mixed valence manganese (II, III and IV) in its crystal and powder state. The novel compound [MnII MnIII MnIV(HL)2(H2L)2(H2O)4](NO3)2(H2O) 1 was obtained with the Schiff base (E)-2-((2-hydroxybenzylidene)amine)-2-(hydroximethyl)propane-1,3-diol, (H4L), and Mn(NO3)2.4H2O. The coordination reaction was promoted by the deprotonation of the ligand by the soft base triethylamine. The paper’s main contribution is the integration of the experimental and computational studies to explain the interesting magnetic behavior that the mixed valence manganese multimetallic core shows. The results presented herein, which are rarely found for Mn(II), (III) and (IV) complexes, will contribute to the understanding of the magnetic communication generated by the valence electrons and its repercussion in the local geometry and in the overall crystalline structure.

Die neuen Oxobismutate(III) Cs6Bi4O9, K9Bi5O13 und A2Bi4O7 (A = Rb, Cs) / The New Oxobismutates(III) Cs6Bi4O9, K9Bi5O13 and A2Bi4O7 (A = Rb, Cs)

2002 ◽  
Vol 57 (10) ◽  
pp. 1090-1100
Author(s):  
Franziska Emmerling ◽  
Caroline Röhr
Keyword(s):  
Single Crystal ◽  
Crystal Structures ◽  
Alkali Metals ◽  
Mixed Valence ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Trigonal Bipyramidal ◽  
Mixed Valence Compound

AbstractThe title compounds were synthesized at a temperature of 700 °C via oxidation of elemental Bi with the hyperoxides AO2 or via reaction of the elemental alkali metals A with Bi2O3. Their crystal structures have been determined by single crystal x-ray diffraction. They are dominated by two possible surroundings of Bi by O, the ψ-trigonal-bipyramidal three (B) and the ψ-tetrahedral four (T) coordination. Cs6Bi4O9 (triclinic, spacegroup P1̄, a = 813.82(12), b = 991.60(14), c = 1213.83(18) pm, α = 103.658(2), β = 93.694(3), γ = 91.662(3)°, Z = 2) contains centrosymmetric chain segmentes [Bi8O18]12- with six three- (T) and two four-coordinated (B) Bi(III) centers. K9Bi5O13 (monoclinic, spacegroup P21/c, a = 1510.98(14), b = 567.59(5), c = 2685.6(2) pm, β = 111.190(2)°, Z = 4) is a mixed valence compound with isolated [BivO4]3- tetrahedra and chains [BiIII4O9]6- of two T and two B coordinated Bi. In the compounds A2Bi4O7 (A = Rb/Cs: monoclinic, C2/c, a = 2037.0(3) / 2130.6(12), b = 1285.5(2) / 1301.9(7), c = 1566.6(2) / 1605.6(9) pm, β = 94.783(3) / 95.725(9)°, Z = 8) ribbons [Bi4O6O2/2]2- are formed, which are condensed to form a three-dimensional framework.

Novel mixed-valence vanadium(IV/V) molecule exhibiting unusual electron delocalization over the [V2O3]3+ core

1997 ◽  
pp. 2849-2852 ◽  
Author(s):  
Eddia P. Copeland ◽  
Ishenkumba A. Kahwa ◽  
Joel T. Mague ◽  
Gary L. McPherson
Keyword(s):  
Mixed Valence ◽  
Electron Delocalization
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