Preparation and physical properties of oxidation products of oxo-bridged binuclear iron(III) complexes. Mixed-valence diiron(III, IV) complexes

1977 ◽  
Vol 16 (4) ◽  
pp. 723-733 ◽  
Author(s):  
Ronald G. Wollmann ◽  
David N. Hendrickson
Keyword(s):  
Physical Properties ◽  
Mixed Valence ◽  
Oxidation Products ◽  
Binuclear Iron

Mixed-valence Fe(III)Fe(IV) dimers. Preparation and physical properties of oxidation products of oxo-bridged binuclear iron(III) complexes

1995 ◽  
Vol 238 (1-2) ◽  
pp. 139-147 ◽  
Author(s):  
V.K. Voronkova ◽  
J. Mrozinski ◽  
M.A. Yampol'skaya ◽  
Yu.V. Yablokov ◽  
N.S. Evtushenko ◽  
...  
Keyword(s):  
Physical Properties ◽  
Mixed Valence ◽  
Oxidation Products ◽  
Binuclear Iron

ChemInform Abstract: MIXED VALENCE SPECTRUM AND CYCLIC VOLTAMMETRY OF BINUCLEAR IRON CYANO COMPLEXES

1974 ◽  
Vol 5 (10) ◽  
pp. no-no
Author(s):  
R. GLAUSER ◽  
U. HAUSER ◽  
F. HERREN ◽  
A. LUDI ◽  
P. RODER ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Mixed Valence ◽  
Cyano Complexes ◽  
Binuclear Iron

scholarly journals Effect of Transition Metal Substitution on the Charge-Transfer Phase Transition and Ferromagnetism of Dithiooxalato-Bridged Hetero Metal Complexes, (n-C3H7)4N[FeII1−xMnIIxFeIII(dto)3]

Crystals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 446 ◽  
Author(s):  
Masaya Enomoto ◽  
Hiromichi Ida ◽  
Atsushi Okazawa ◽  
Norimichi Kojima
Keyword(s):  
Phase Transition ◽  
Charge Transfer ◽  
Physical Properties ◽  
Mixed Valence ◽  
Ferromagnetic Phase ◽  
Ferromagnetic Transition ◽  
Transfer Phase ◽  
Spin Configuration ◽  
Ion Radius ◽  
The Difference

The dithiooxalato-bridged iron mixed-valence complex (n-C3H7)4N[FeIIFeIII(dto)3] (dto = dithiooxalato) undergoes a novel charge-transfer phase transition (CTPT) accompanied by electron transfer between adjacent FeII and FeIII sites. The CTPT influences the ferromagnetic transition temperature according to the change of spin configuration on the iron sites. To reveal the mechanism of the CTPT, we have synthesized the series of metal-substituted complexes (n-C3H7)4N[FeII1-xMnIIxFeIII(dto)3] (x = 0–1) and investigated their physical properties by means of magnetic susceptibility and dielectric constant measurements. With increasing MnII concentration, x, MnII-substituted complexes show the disappearance of CTPT above x = 0.04, while the ferromagnetic phase remains in the whole range of x. These results are quite different from the physical properties of the ZnII-substituted complex, (n-C3H7)4N[FeII1-xZnIIxFeIII(dto)3], which is attributed to the difference of ion radius as well as the spin states of MnII and ZnII.

Tuning of the Physical Properties in Mixed Valence Inorganic Solids by Oriented Cationic and Anionic Substitutions

2012 ◽  
Vol 638 (10) ◽  
pp. 1640-1640
Author(s):  
Kledi Xhaxhiu ◽  
Hans-Jörg Deiseroth ◽  
Rüdiger Schmidt-Grund ◽  
Klaus Bente
Keyword(s):  
Physical Properties ◽  
Mixed Valence ◽  
Inorganic Solids

scholarly journals Climate-relevant physical properties of molecular constituents for isoprene-derived secondary organic aerosol material

2014 ◽  
Vol 14 (19) ◽  
pp. 10731-10740 ◽  
Author(s):  
M. A. Upshur ◽  
B. F. Strick ◽  
V. F. McNeill ◽  
R. J. Thomson ◽  
F. M. Geiger
Keyword(s):  
Surface Tension ◽  
Physical Properties ◽  
Radiative Forcing ◽  
Secondary Organic Aerosol ◽  
Cloud Condensation Nuclei ◽  
Organic Aerosol ◽  
Dynamic Surface Tension ◽  
Oxidation Products ◽  
Dynamic Surface ◽  
Cis And Trans

Abstract. Secondary organic aerosol (SOA) particles, formed from gas-phase biogenic volatile organic compounds (BVOCs), contribute large uncertainties to the radiative forcing that is associated with aerosols in the climate system. Reactive uptake of surface-active organic oxidation products of BVOCs at the gas–aerosol interface can potentially decrease the overall aerosol surface tension and therefore influence their propensity to act as cloud condensation nuclei (CCN). Here, we synthesize and measure some climate-relevant physical properties of SOA particle constituents consisting of the isoprene oxidation products α-, δ-, and cis- and trans-β-IEPOX (isoprene epoxide), as well as syn- and anti-2-methyltetraol. Following viscosity measurements, we use octanol–water partition coefficients to quantify the relative hydrophobicity of the oxidation products while dynamic surface tension measurements indicate that aqueous solutions of α- and trans-β-IEPOX exhibit significant surface tension depression. We hypothesize that the surface activity of these compounds may enhance aerosol CCN activity, and that trans-β-IEPOX may be highly relevant for surface chemistry of aerosol particles relative to other IEPOX isomers.

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