Synthesis and electrochemical properties of bimetallic η5-indenyl ruthenium complexes

2009 ◽  
Vol 87 (1) ◽  
pp. 134-138 ◽  
Author(s):  
Quan Yuan Hu ◽  
Guochen Jia
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Properties ◽  
Electronic Communication ◽  
Ruthenium Complexes ◽  
Hydride Complex

Treatment of RuCl(dppm)(η5-C9H7) with alkynes HC≡C(C6H4)nC≡CH (n = 1, 2) in the presence of TlPF6 and t-BuONa affords the bimetallic ruthenium acetylide complexes [(η5-C9H7)(dppm)Ru]2(µ-C≡C(C6H4)nC≡C). Reactions of the hydride complex RuH(dppm)(η5-C9H7) with HC≡C(C6H4)nC≡CH (n = 1, 2) in refluxing toluene give the bimetallic ruthenium alkenyl complexes [(η5-C9H7)(dppm)Ru]2(µ-CH=CH(C6H4)nCH=CH). The electrochemical properties of the new complexes have been investigated by cyclic voltammetry, which reveals that the organic spacer –CH=CHC6H4CH=CH– is more effective than –C≡CC6H4C≡C– in mediating electronic communication between the two ruthenium moieties.Key words: ruthenium, bimetallic, acetylide, insertion, electrochemistry.

Association of ruthenium complexes [Ru(bpy)3]2+ or [Ru(bpy)2(Mebpy-py)]2+ with Dawson polyanions α-[P2W18O62]6– or α2-[FeIII(H2O)P2W17O61]7–

2008 ◽  
Vol 86 (11) ◽  
pp. 1034-1043 ◽  
Author(s):  
L Ruhlmann ◽  
C Costa-Coquelard ◽  
J Hao ◽  
S Jiang ◽  
C He ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Steady State ◽  
Nmr Spectroscopy ◽  
Electrochemical Properties ◽  
Ruthenium Complex ◽  
Ruthenium Complexes ◽  
Association Constants ◽  
Luminescence Spectroscopy ◽  
Steady State Absorption

The formation of electrostatically linked complexes between [Ru(bpy)3]Cl2 or [Ru(bpy)2(Mebpy-py)](PF6)2 and (TBA)6α-[P2W18O62] or (TBA)5K2α2-[FeIII(H2O)P2W17O61] in solution were studied by steady-state absorption and luminescence spectroscopy. The stoichiometry and global association constants of the formed complexes were obtained by the Job method. The formed complexes were characterized by 1H and 31P NMR spectroscopy and their electrochemical properties compared to the precursor compounds were investigated by using the cyclic voltammetry method.Key words: electrochemistry, polyoxometalate, ruthenium complex, electrostatic complex.

scholarly journals Effect of Deposition Parameters on Electrochemical Properties of Polypyrrole-Graphene Oxide Films

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 624 ◽  
Author(s):  
Alina Iuliana Pruna ◽  
Nelly Ma. Rosas-Laverde ◽  
David Busquets Mataix
Keyword(s):  
Cyclic Voltammetry ◽  
Graphene Oxide ◽  
Electrochemical Properties ◽  
Sodium Dodecyl ◽  
Hybrid Coatings ◽  
Deposition Parameters ◽  
Structure Morphology ◽  
Energy Storage Applications ◽  
Improved Performance ◽  
Sds Surfactant

Graphene oxide (GO)-modified polypyrrole (PPy) coatings were obtained by electrochemical methods in the presence of the anionic surfactant, sodium dodecyl sulfate (SDS). The structure, morphology, and electrochemical properties of the coatings were assessed by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM) and cyclic voltammetry at varying scan rates, respectively. The properties of the obtained coatings were analyzed with the GO and PPy loadings and electrodeposition mode. The hybrid coatings obtained galvanostatically showed a coarser appearance than those deposited by cyclic voltammetry CV mode and improved performance, respectively, which was further enhanced by GO and PPy loading. The capacitance enhancement can be attributed to the SDS surfactant that well dispersed the GO sheets, thus allowing the use of lower GO content for improved contribution, while the choice of suitable electrodeposition parameters is highly important for improving the applicability of GO-modified PPy coatings in energy storage applications.

Some ruthenium complexes containing cyanocarbon ligands: syntheses, structures and extent of electronic communication in binuclear systems

2004 ◽  
Vol 689 (21) ◽  
pp. 3308-3326 ◽  
Author(s):  
Michael I. Bruce ◽  
Mark A. Buntine ◽  
Karine Costuas ◽  
Benjamin G. Ellis ◽  
Jean-François Halet ◽  
...  
Keyword(s):  
Electronic Communication ◽  
Ruthenium Complexes

Preparation and Electrochemical Properties of LaMnO3 Powder as a Supercapacitor Electrode Material

2017 ◽  
Vol 727 ◽  
pp. 698-704 ◽  
Author(s):  
Xian Wei Wang ◽  
Xiao Er Wang ◽  
Hui Chao Zhang ◽  
Qian Qian Zhu ◽  
Dong Li Zheng ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Properties ◽  
Electrode Material ◽  
Raw Materials ◽  
Sol Gel ◽  
Galvanostatic Charge ◽  
Supercapacitor Electrode ◽  
Lanthanum Manganate ◽  
Pure Phase ◽  
Charge Discharge

The structural and electrochemical properties of lanthanum manganate (LaMnO3) powder prepared by the sol-gel method are researched in this article. The powder calcined at 600 °C showed amorphous, and the powder calcined at 700-800 °C showed the pure phase of the LaMnO3. The grains with the size of about 80-120 nm were agglomerating together. Cyclic voltammetry and galvanostatic charge-discharge were used to characterize the electrochemical properties in alkaline environment. The electrochemical properties calcined at 700 °C showed a specific capacitance of 73 F/g at the current density of 0.5 A/g. The raw materials for preparing the LaMnO3 powder are cheap, and the operation method is simple.

Coordination polymers of 5-substituted 1,2,3,4-tetracyanocyclopentadienides: structural and electrochemical properties of complex compounds of 5-amino- and 5-nitro-tetracyanocyclopentadienide

2021 ◽  
Author(s):  
Patrick Nimax ◽  
Nils Rotthowe ◽  
Florian Zoller ◽  
Tobias Blockhaus ◽  
Friedrich Ernst Wagner ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Mössbauer Spectroscopy ◽  
Electrochemical Properties ◽  
Coordination Polymers ◽  
Mossbauer Spectroscopy ◽  
Complex Compounds ◽  
Electrochemical Methods ◽  
Mößbauer Spectroscopy

Compounds of the 5-amino- (ATCC) and 5-nitro-1,2,3,4-tetracyanocyclopentadienide (NTCC) ligand with iron(II) and iron(III), silver(I) and potassium(I) were prepared and characterized by electrochemical methods using EPR, cyclic voltammetry and Mößbauer spectroscopy...

scholarly journals Systematic ligand variation to modulate the electrochemical properties of iron and manganese complexes

2019 ◽  
Vol 48 (35) ◽  
pp. 13205-13211 ◽  
Author(s):  
Stefan S. Rohner ◽  
Niklas W. Kinzel ◽  
Christophe Werlé ◽  
Walter Leitner
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Properties ◽  
Electronic Properties ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Manganese Complexes ◽  
Catalytic Current ◽  
Water Oxidation Catalysis ◽  
Iron And Manganese

Systematic series of iron(+iii) and manganese(+ii) complexes are investigated by cyclic voltammetry to elucidate how the electronic properties of the ligands influence overpotential and catalytic current in the context of water oxidation catalysis.

scholarly journals Variable Coordination Modes of Benzaldehyde Thiosemicarbazones - Synthesis, Structure, and Electrochemical Properties of Some Ruthenium Complexes

2008 ◽  
Vol 2008 (29) ◽  
pp. 4538-4546 ◽  
Author(s):  
Swati Dutta ◽  
Falguni Basuli ◽  
Alfonso Castineiras ◽  
Shie-Ming Peng ◽  
Gene-Hsiang Lee ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Ruthenium Complexes ◽  
Coordination Modes ◽  
Variable Coordination
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