Reversible, thermally-assisted solid-state redox processes in mixed valence dimers

1994 ◽  
Vol 93 (1) ◽  
pp. 1605-1611
Author(s):  
W. M. Reiff ◽  
J. Kreisz ◽  
R. U. Kirss
Keyword(s):  
Solid State ◽  
Mixed Valence ◽  
Redox Processes

Clostridium isatidis colonised carbon electrodes: voltammetric evidence for direct solid state redox processes

2000 ◽  
Vol 24 (3) ◽  
pp. 179-181 ◽  
Author(s):  
Richard G. Compton ◽  
Susan J. Perkin ◽  
David P. Gamblin ◽  
James Davis ◽  
Frank Marken ◽  
...  
Keyword(s):  
Solid State ◽  
Carbon Electrodes ◽  
Redox Processes ◽  
Direct Solid

Solid-state 95Mo NMR of mixed-valence polyoxomolybdates (V, VI) with localized or delocalized d1 electrons

2010 ◽  
Vol 487 (4-6) ◽  
pp. 232-236 ◽  
Author(s):  
Takahiro Iijima ◽  
Toshihiro Yamase ◽  
Masataka Tansho ◽  
Tadashi Shimizu ◽  
Katsuyuki Nishimura
Keyword(s):  
Solid State ◽  
Mixed Valence

scholarly journals Evidence for the charge disproportionation of iron in extraterrestrial bridgmanite

2020 ◽  
Vol 6 (2) ◽  
pp. eaay7893 ◽  
Author(s):  
Luca Bindi ◽  
Sang-Heon Shim ◽  
Thomas G. Sharp ◽  
Xiande Xie
Keyword(s):  
High Pressure ◽  
Metallic Iron ◽  
Valence State ◽  
Lower Mantle ◽  
Direct Evidence ◽  
Mixed Valence ◽  
Disproportionation Reaction ◽  
Redox Processes ◽  
Charge Disproportionation ◽  
Suizhou Meteorite

Bridgmanite, MgSiO3 with perovskite structure, is considered the most abundant mineral on Earth. On the lower mantle, it contains Fe and Al that strongly influence its behavior. Experimentalists have debated whether iron may exist in a mixed valence state, coexistence of Fe2+ and Fe3+ in bridgmanite, through charge disproportionation. Here, we report the discovery of Fe-rich aluminous bridgmanite coexisting with metallic iron in a shock vein of the Suizhou meteorite. This is the first direct evidence in nature of the Fe disproportionation reaction, which so far has only been observed in some high-pressure experiments. Furthermore, our discovery supports the idea that the disproportionation reaction would have played a key role in redox processes and the evolution of Earth.

Pt(NH3)2(SCN)2J: Ein Platinkomplex mit gemischter Wertigkeit / Pt(NH3)2(SCN)2I: A Mixed Valence Platinum Compound

1976 ◽  
Vol 31 (2) ◽  
pp. 194-197 ◽  
Author(s):  
K. D. Buse ◽  
H. J. Keller ◽  
D. Nöthe
Keyword(s):  
Solid State ◽  
Metal Complex ◽  
Linear Chain ◽  
Mixed Valence ◽  
Molecular Iodine ◽  
Platinum Compound ◽  
Physical Evidence ◽  
Mixed Valence Compound

Pt(NH3)2(SCN)2 dissolved in liquid SO2 reacts with molecular iodine to yield a green lustrous solid of stoichiometry Pt(NH3)2(SCN)2I. The compound is diamagnetic in the solid state and in solution and has to be taken for a platinum(II, IV) mixed valence compound, therefore. Chemical and physical evidence so far suggest a linear chain solid with either iodide-bridged metal complex chains or metal complex stacks with parallel triiodide chains.

σ-Hole halogen bonding interactions in a mixed valence cobalt(iii/ii) complex and anti-electrostatic hydrogen bonding interaction in a cobalt(iii) complex: a theoretical insight

CrystEngComm ◽  
2018 ◽  
Vol 20 (45) ◽  
pp. 7281-7292 ◽  
Author(s):  
Kousik Ghosh ◽  
Klaus Harms ◽  
Antonio Bauzá ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Dft Calculations ◽  
Mixed Valence ◽  
Halogen Bonding ◽  
Supramolecular Interactions ◽  
Hydrogen Bonding Interaction ◽  
Bonding Interaction ◽  
Solid State Structures ◽  
Theoretical Insight

Supramolecular interactions in the solid state structures of a mixed valence cobalt(ii/iii) complex and a cobalt(iii) complex have been studied using DFT calculations.

Linear Chain Bis(α,β-dionedioximato)metal Compounds of the Nickel Triad: Solid State Design by Molecular Engineering

1977 ◽  
Vol 32 (5) ◽  
pp. 516-527 ◽  
Author(s):  
H. Endres ◽  
H. J. Keller ◽  
R. Lehmann ◽  
A. Poveda ◽  
H. H. Rupp ◽  
...  
Keyword(s):  
Solid State ◽  
Linear Chain ◽  
Mixed Valence ◽  
Structural Data ◽  
Molecular Engineering ◽  
Complex Molecules ◽  
Metal Compounds ◽  
Metal Interactions ◽  
Wide Range ◽  
Metal Metal

Chemical and structural data of numerous bis(α,β-dionedioximato)metal(II) compounds are summarized. All of them crystallize in columns but principally two different kinds of molecular arrangements occur in the solids. In one phase the molecular planes are inclined to the direction of the linear metal chains with an angle different from 90°. This allows only indirect interactions between the metal ions via the ligand. (“M—L—M” stacking.) The other modification consists of molecules with their planes perpendicular to the M—M-chains. This form allows direct metal-metal contacts (“M—M” modification). Depending on a few molecular parameters a “M—L—M” or a “M—M” stacking is obtained upon crystallization. Since for those compounds which could be isolated in both modifications the M—L—M form has the higher density it is concluded that only stronger M—M interactions stabilize the less dense M—M forms.A wide range of metal-metal separations with a lower limit of 3.15 Å in mixed valence systems are found in different “M—M” compounds. In any case the intrachain metal-metal distances are reduced considerably upon oxidation of the bivalent complex molecules. The influence of “electronic” and “sterical” parameters of the complex molecules on the intermolecular metal interactions and on the type of columns in the solid state is discussed.

Highly cooperative valence detrapping of mixed-valence manganese complex [Mn3O(O2CCH3)6(py)3](py) in the solid state

1989 ◽  
Vol 111 (20) ◽  
pp. 7778-7784 ◽  
Author(s):  
Ho G. Jang ◽  
John B. Vincent ◽  
Motohiro Nakano ◽  
John C. Huffman ◽  
George Christou ◽  
...  
Keyword(s):  
Solid State ◽  
Mixed Valence ◽  
Manganese Complex
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