Tuning the oxidation state and magnetic and coordination behaviour of iron and cobalt complexes by O/S variation in mono-thio and dithio-oxamide chelating ligands

2015 ◽  
Vol 39 (6) ◽  
pp. 4716-4725 ◽  
Author(s):  
Luca Pilia ◽  
Davide Espa ◽  
Giorgio Concas ◽  
Francesco Congiu ◽  
Luciano Marchiò ◽  
...  
Keyword(s):  
Oxidation State ◽  
Spin State ◽  
Cobalt Complexes ◽  
Chelating Ligands ◽  
Metal Oxidation ◽  
Coordination Behaviour

A variety of iron and cobalt complexes which differ in coordination, metal oxidation state, and spin state is obtained with corresponding S,O and S,S′ title ligands.

scholarly journals Effects of tethered ligands and of metal oxidation state on the interactions of cobalt complexes with the 26S proteasome

2011 ◽  
Vol 105 (12) ◽  
pp. 1759-1766 ◽  
Author(s):  
Dajena Tomco ◽  
Sara Schmitt ◽  
Bashar Ksebati ◽  
Mary Jane Heeg ◽  
Q. Ping Dou ◽  
...  
Keyword(s):  
Oxidation State ◽  
Cobalt Complexes ◽  
26S Proteasome ◽  
Metal Oxidation ◽  
Tethered Ligands

scholarly journals Two-Dimensional, Hierarchical Ag-Doped TiO2 Nanocatalysts: Effect of the Metal Oxidation State on the Photocatalytic Properties

ACS Omega ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 2579-2587 ◽  
Author(s):  
Siti Khatijah Md Saad ◽  
Akrajas Ali Umar ◽  
Marjoni Imamora Ali Umar ◽  
Masahiko Tomitori ◽  
Mohd. Yusri Abd. Rahman ◽  
...  
Keyword(s):  
Oxidation State ◽  
Photocatalytic Properties ◽  
Two Dimensional ◽  
Metal Oxidation ◽  
Doped Tio2

Synthesis and characterisation of transition metal substituted barium hollandite ceramics

2006 ◽  
Vol 932 ◽  
Author(s):  
Neil C. Hyatt ◽  
Martin C. Stennett ◽  
Steven G. Fiddy ◽  
Jayne S. Wellings ◽  
Sian S. Dutton ◽  
...  
Keyword(s):  
Transition Metal ◽  
Oxidation State ◽  
Powder Diffraction ◽  
Single Phase ◽  
Maximum Density ◽  
Processing Conditions ◽  
Metal Oxidation ◽  
Exafs Data ◽  
X Ray ◽  
Oxygen Atoms

ABSTRACTA range of transition metal bearing hollandite phases, formulated Ba1.2B1.2Ti6.8O16 (B2+ = Mg, Co, Ni, Zn, Mn) and Ba1.2B2.4Ti5.6O16 (B3+ = Al, Cr, Fe) were prepared using an alkoxide - nitrate route. X-ray powder diffraction demonstrated the synthesis of single phase materials for all compositions except B = Mn. The processing conditions required to produce > 95 % dense ceramics were determined for all compositions, except B = Mg for which the maximum density obtained was > 93 %. Analysis of transition metal K-edge XANES data confirmed the presence of the targeted transition metal oxidation state for all compositions except B = Mn, where the overall oxidation state was found to be Mn3+. The K-edge EXAFS data of Ba1.2B1.2Ti6.8O16 (B = Ni and Co) were successfully analysed using a crystallographic model of the hollandite structure, with six oxygen atoms present in the first co-ordination shell at a distance of ca. 2.02Å. Analysis of Fe K-edge EXAFS data of Ba1.2B2.4Ti5.4O16 revealed a reduced co-ordination shell of five oxygens at ca. 1.99Å.

Performance of enhanced DuBois type water reduction catalysts (WRC) in artificial photosynthesis – effects of various proton relays during catalysis

2019 ◽  
Vol 215 ◽  
pp. 141-161 ◽  
Author(s):  
Wolfgang Viertl ◽  
Johann Pann ◽  
Richard Pehn ◽  
Helena Roithmeyer ◽  
Marvin Bendig ◽  
...  
Keyword(s):  
Oxidation State ◽  
Artificial Photosynthesis ◽  
Metal Oxidation ◽  
Water Reduction ◽  
Coordination Site ◽  
Proton Relay ◽  
Additional Coordination ◽  
Type Water ◽  
Reduction Catalysts

A pincer type ligand provides an additional coordination site or a proton relay depending on the metal oxidation state.

ChemInform Abstract: SCHIFF BASE TETRADENTATE CHELATING LIGANDS AND COBALT COMPLEXES FROM ACETYLINDANONES

1981 ◽  
Vol 12 (22) ◽  
Author(s):  
A. DRUSIANI ◽  
L. PLESSI ◽  
A. BIGOTTO ◽  
G. PELLIZER ◽  
G. COSTA
Keyword(s):  
Schiff Base ◽  
Cobalt Complexes ◽  
Chelating Ligands

Reaction of Acyl(hydrido)cobalt(III) Complexes with (2-Diphenylphosphanyl)phenol and Influence of Chelating Ligands Containing Hard/Soft Donor Atoms on the Stability of Cobalt Complexes

2005 ◽  
Vol 24 (11) ◽  
pp. 2612-2616 ◽  
Author(s):  
Hongjian Sun ◽  
Xiaoyan Li ◽  
Hans-Friedrich Klein ◽  
Ulrich Flörke ◽  
Hans-Jürgen Haupt
Keyword(s):  
Cobalt Complexes ◽  
Chelating Ligands ◽  
The Stability
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