Redox Properties of Macrotricyclic Hexaamine Cobalt(III) Complexes

1986 ◽  
Vol 39 (12) ◽  
pp. 2183 ◽  
Author(s):  
A Hammershoi ◽  
GA Lawrance ◽  
AM Sargeson
Keyword(s):  
Electrochemical Properties ◽  
Redox Properties

Electrochemical properties of the macrocyclic hexaamine cobalt(III) complex [Co( taetacn )]3+ and its macrotricyclic derivatives [Co( azasartacn )]3+, [Co( nosartacn )]3+, [Co( amsartacn )]3+, and [Co( amsartacnH )]4+ in water, acetonitrile and acetone are reported and compared with those of macrobicyclic analogues. The results show that the tricyclic cage complexes are reduced somewhat more readily than their bicyclic equivalents, implying that the cavity sizes for the tricyclic systems are somewhat larger.

Influence of Metal Core Composition on Redox Properties and Photoreactivity of the Clusters [H4-xRu4-xRhx(CO)12] (x = 0, 2, 3, 4)

2001 ◽  
Vol 66 (7) ◽  
pp. 1062-1077 ◽  
Author(s):  
Maarten J. Bakker ◽  
Tapani A. Pakkanen ◽  
František Hartl
Keyword(s):  
Electrochemical Properties ◽  
Electrochemical Reduction ◽  
Redox Properties ◽  
Metal Core ◽  
Loss Product ◽  
Condensation Reactions ◽  
Core Composition ◽  
Co Dissociation ◽  
Major Reduction

Electrochemical properties of tetrahedral clusters [H2Ru2Rh2(CO)12], [HRuRh3(CO)12] and [Rh4(CO)12] were investigated in order to evaluate the influence of metal core composition in the series [H4-xRu4-xRhx(CO)12] (x = 0-4). The cluster [H3Ru3Rh(CO)12] was not available in sufficient quantities. As reported for [H4Ru4(CO)12], electrochemical reduction of the hydride-containing clusters [H2Ru2Rh2(CO)12] and [HRuRh3(CO)12] also results in (stepwise) loss of hydrogen, producing the anions [HRu2Rh2(CO)12]-, [Ru2Rh2(CO)12]2- and [RuRh3(CO)12]-. These anions can also be prepared from the neutral parent clusters via chemical routes. Electrochemical reduction of [Rh4(CO)12] does not result in the formation of any stable tetranuclear anion. Instead, [Rh5(CO)15]- and [Rh6(CO)15]2- are the major reduction products detected in the course of IR spectroelectrochemical experiments. Most likely, these cluster species are formed from the secondary CO-loss product [Rh4(CO)11]2- by fast redox condensation reactions. Their reoxidation regenerates parent [Rh4(CO)12], together with some [Rh6(CO)16]. Unlike [H4Ru4(CO)12] that undergoes photochemical CO-dissociation, [H2Ru2Rh2(CO)12] and [Rh4(CO)12] are completely photostable in neat hexane and dichloromethane as well as in the presence of oct-1-ene.

Synthesis, Characterization, Investigation of Capacitance and Redox Properties of Self-assembled Phe-Phe with Ferrocene Conjugates

2021 ◽  
Author(s):  
Om Shanker Tiwari
Keyword(s):  
Nucleic Acid ◽  
Electrochemical Properties ◽  
Self Assembly ◽  
Peptide Nucleic Acid ◽  
Redox Properties ◽  
Self Assembled ◽  
Acid Unit

The synthesis, nanostructure self-assembly and electrochemical properties of a series of ferrocene conjugated peptides derived from the dipeptide Phe-Phe, nucleoside and the peptide nucleic acid unit which are covalently attached...

Reaktionen von α-Ketoaziden mit N,N-Dimethylammo-nitrosobenzol Darstellung von α-Imino-β-ketonitrilen und deren Redoxeigenschaften / Reactions of α-Ketoazides with N,N-Dimethylamino-nitrosobenzol Synthesis of α-Imino-β-Ketonitriles and their Redox Properties

1983 ◽  
Vol 38 (8) ◽  
pp. 930-933 ◽  
Author(s):  
Dierk Knittel
Keyword(s):  
Electrochemical Properties ◽  
Redox Properties ◽  
Nitroso Compounds ◽  
Aromatic Nitroso Compounds

A survey about the reaction between α-azidoacetophenones with aromatic nitroso compounds is given. The synthesis of α-imino-β-ketonitriles and some electrochemical properties of this class are described.

scholarly journals New Copper and Oxomolybdate Robson-Type Polynuclear Macrocyclic Complexes: Structure, Spectroscopy, and Electrochemical Properties

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Marcelo Carpes Nunes ◽  
Marcos Antonio Ribeiro ◽  
Fábio Souza Nunes
Keyword(s):  
Electrochemical Properties ◽  
Macrocyclic Ligand ◽  
Metal Cations ◽  
Redox Properties ◽  
Macrocyclic Complexes ◽  
Molecular Structures ◽  
Polynuclear Complexes ◽  
Unique Mode ◽  
Macrocycle Ligand ◽  
Mode Of Coordination

The polynuclear complexes [Mo3O8(tidf)]·dmso·2H2O (1) and [{Cu2(tidf)}2(μ-Mo8O24)] (2) (tidf2−is a symmetrical tetraiminodiphenolate Robson-type macrocyclic ligand) were prepared from equimolar combinations of [Mg2(tidf)](NO3)2·4H2O, [MoO2Cl2(dmso)2] (for1) and complex1and Cu(ClO4)2·4H2O (for2) in acetonitrile. Molecular structures of both complexes were determined and showed atypical modes of coordination. A significant observation was the remarkable flexibility of the macrocycle ligand that effectively accommodated the steric demands of metal cations and the packing forces and showed a unique mode of coordination. Spectroscopic (UV-vis and FTIR) and redox properties are discussed.

Engineering Rhynchostylis retusa-like heterostructured α-nickel molybdate with enhanced redox properties for high-performance rechargeable asymmetric supercapacitors

2019 ◽  
Vol 7 (47) ◽  
pp. 26893-26904 ◽  
Author(s):  
Ganji Seeta Rama Raju ◽  
Eluri Pavitra ◽  
Goli Nagaraju ◽  
Nilesh R. Chodankar ◽  
Sujaya Kumar Vishwanath ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
High Performance ◽  
Cost Effective ◽  
Single Step ◽  
Redox Properties ◽  
Asymmetric Supercapacitors ◽  
Wet Chemistry ◽  
Nickel Molybdate ◽  
Superior Electrochemical Properties

Rhynchostylis retusa-like α-NiMoO4 was synthesized using a simple, single-step, and cost-effective wet-chemistry approach, and it exhibited the superior electrochemical properties.

Photophysics and redox properties of aza-BODIPY dyes with electron-withdrawing groups

2017 ◽  
Vol 41 (20) ◽  
pp. 12110-12122 ◽  
Author(s):  
Arkadiusz Gut ◽  
Łukasz Łapok ◽  
Dorota Jamróz ◽  
Alexandr Gorski ◽  
Jędrzej Solarski ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Redox Properties

The optical and electrochemical properties are compared for aza-BODIPY dyes that differ by virtue of the substituents at 1,7- and 3,5-positions of the aza-BODIPY backbone.

scholarly journals The Electrochemical Properties of Biochars and How They Affect Soil Redox Properties and Processes

Agronomy ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 322-340 ◽  
Author(s):  
Stephen Joseph ◽  
Olivier Husson ◽  
Ellen Graber ◽  
Lukas van Zwieten ◽  
Sara Taherymoosavi ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Redox Properties ◽  
Soil Redox

Spectroscopic and electrochemical properties of dimeric Ruthenium(II) diimine complexes and determination of their excited state redox properties

1987 ◽  
Vol 109 (9) ◽  
pp. 2691-2697 ◽  
Author(s):  
Yael Fuchs ◽  
Sonita Lofters ◽  
Thomas Dieter ◽  
Wei Shi ◽  
Robert Morgan ◽  
...  
Keyword(s):  
Excited State ◽  
Electrochemical Properties ◽  
Redox Properties ◽  
Diimine Complexes
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