110169-72-7

Basic information

• Product Name: (ethylenediaminetetraacetato)cobalt(II)^(2-)
• CAS NO: 110169-72-7
• Molecular Weight: 347.207
• Mol File: 110169-72-7.mol

Chemical Properties

• CAS DataBase Reference: (ethylenediaminetetraacetato)cobalt(II)^(2-)(CAS DataBase Reference)
• NIST Chemistry Reference: (ethylenediaminetetraacetato)cobalt(II)^(2-)(110169-72-7)
• EPA Substance Registry System: (ethylenediaminetetraacetato)cobalt(II)^(2-)(110169-72-7)

Safety Data

• Hazardous Substances Data: 110169-72-7(Hazardous Substances Data)

Upstream product

• 7681-11-0 potassium iodide 
• 64-02-8 disodium ethylenediamine tetraacetic acid 
• 13820-81-0 aquapentaamminecobalt(III) perchlorate 
• 64-02-8 ethylene diamine tetraacetic acid tetrasodium salt 
• 33291-25-7 pentaammine(pyridine)ruthenium(III) 
• 952-92-1 1-Benzyl-1,4-dihydronicotinamide 
• 148978-64-7 {CoC₆H₆NO₆en}*H₂O 
• 31011-67-3 pentaammine pyridine cobalt(III) cation 
• 113986-76-8 pentaammine 1-phenyl-3-(4-pyridyl)propane cobalt(III) cation 

Relevant articles and documents

Two supramolecular complexes based on polyoxometalates and Co-EDTA units via covalent connection or non-covalent interaction

Two new 3D network organic-inorganic hybrid supramolecular complexes {[Na6(CoEDTA)2(H2O)13]·(H2SiW12O40)·xH2O}n (1) and [CoH4EDTA(H2O)]2(SiW12O40)·15H2O (2) (H4EDTA=Ethylenediamine tetraacetic acid) have been successfully synthesized by solution method, and characterized by infrared spectrum (IR), thermogravimetric-differential thermal analysis (TG-DTA), cyclic voltammetry (CV) and single?crystal X-ray diffraction (XRD). Both of the complexes are the supramolecules, but with different liking mode, they are two representative models of supramolecule. complex (1) is a 3D infinite network supramolecular coordination polymer with a rare multi-metal sturcture of sodium-cobalt-containing, which is mainly linked through coordinate-covalent bonds. While complex (2) is normal supramolecule, which linked by non-covalent interactions, such as H-bonding interaction, electrostatic interaction and van der waals force. Both of complex (1) and (2) exhibit good catalytic activities for catalytic oxidation of methanol, when the initial concentration of methanol is 3.0?g?m?3, flow rate is 10?mL?min?1, and the quality of catalyst is 0.2?g, for complex (1) and complex (2) the maximum elimination rates of methanol are 85% (150?°C) and 92% (120?°C), respectively.

Micellar Accelerated Reduction of Ethylenediaminetetraacetatocobaltate(III) by 1-Benzyl-1,4-dihydronicotinamide

The electrostatic and hydrophobic effects of ionic micelles on the reduction of ethylenediaminetetraacetatocobaltate(III) (-) by 1-benzyl-1,4-dihydronicotinamide (BNAH) were investigated with dodecyltrimethylammonium chloride (DTAC) and/or sodiu

Magnetic resonance imaging of a magnetic field-dependent chemical wave

The magnetic field dependence of the travelling wave formed during the reaction of (ethylenediaminetetraacetato)cobalt(II) (Co(II)EDTA2-) and hydrogen peroxide was studied using magnetic resonance imaging (MRI). The reaction was investigated in a vertical tube, in which the wave was initiated from above. The wave propagated downwards, initially with a flat wavefront before forming a finger. Magnetic field effects were observed only once the finger had formed. The wave propagation was accelerated by a magnetic field with a negative gradient (i.e., when the field was stronger at the top of the tube than at the bottom) and slightly decelerated by positive field gradients.

MICELLAR-PROMOTED STEREOSELECTIVE PHOTOREDUCTION OF POTASSIUM ETHYLENEDIAMINETETRAACETATOCOBALTATE(III) BY A LONG-CHAIN CHIRAL RUTHENIUM(II) COMPLEX.

This work decribes the micellar-accelerated chiroselective photoreduction of potassium ethylenediaminetetraacetatocobaltate(III), KCo(edta), by the following longchain chiral ruthenium(II) complex with ionic or nonionic surfactants of cetyltrimethylammonium bromide (CTAB), polyoxyethylene (9. 5) octylphenol (Triton X), and sodium dodecylsulfate (SDS).

Kinetics and mechanism of the reduction of the molybdatopentaamminecobalt(III) ion by aqueous sulfite and aqueous potassium hexacyanoferrate(II)

A detailed investigation on the oxidation of aqueous sulfite and aqueous potassium hexacyanoferrate(II) by the title complex ion has been carried out using the stopped-flow technique over the ranges, 0.01≤[S(IV)]T≤0.05 mol dm-3, 4.47≤pH≤5.12, and 24.9≤θ≤37.6°C and at ionic strength 1.0 mol dm-3 (NaNO3) for aqueous sulfite and 0.01≤[Fe(CN)64-]≤0.11 mol dm-3, 4.54≤pH≤5.63, and 25.0≤θ≤35.3°C and at ionic strength 1.0 or 3.0 mol dm-3 (NaNO3) for the hexacyanoferrate(II) ion. Both redox processes are dependent on pH and reductant concentration in a complex manner, that is, for the reaction with aqueous sulfite, kobs={(k1K1K2K3+k 2K1K4[H+])[S(IV)]T]/ ([H+]2+K1[H+]+K1K 2) and for the hexacyanoferrate(II) ion, kobs={(k1K3K4K5+k 2K3K6[H+])[Fe(CN)6 4-]T)/([H+]2+K3[H +]+K3K4). At 25.0°C, the value of k′1 (the composite of k1K3) is 0.77±0.07 mol-1 dm3 s-1, while the value of k′2 (the composite of k2K4) is (3.78±0.17)×10-2 mol-1 dm3 s-1 for aqueous sulfite. For the hexacyanoferrate(II) ion, k′1 (the composite of k1K5) is 1.13±0.01 mol-1 dm3 s-1, while the value of k′2 (the composite of k2K6) is 2.36±0.05 mol-1 dm3 s-1 at 25.0°C. In both cases there was reduction of the cobalt(III) centre to cobalt(II), but there was no reduction of the molybdenum(VI) centre. k22, the self-exchange rate constant, for aqueous sulfite (as SO32-) was calculated to be 5.37×10-12 mol-1 dm3 s-1, while for Fe(CN)64-, it was calculated to be 1.10×109 mol-1 dm3 s-1 from the Marcus equations.

New Photoreduction Catalysis by + (N-N = 2,9-Dimethyl-1,10-phenanthroline or 4,4',6,6'-Tetramethyl-2,2'-bipyridine) and Its Application to Cobalt(III) Complexes

The copper(I) complexes + photocatalytically reduce cobalt(III) complexes such as 2+, - (edta = ethylenediaminetetra-acetate), and (acac = acetylacetonate), upon irradiation with near-u.v. light corresponding to the metal-to-ligand charge-transfer absorption band (about 360 nm) of the copper(I) copmlex.This is a new type of photocatalytic reduction by copper(I) complexes.The photosensitising mechanism is discussed on the basis of the Stern-Volmer relationship.The dmphen complex has a higher activity than that of the tmbipy analogue, and the reactivity of the cobalt(III) complexes decreases ine the order 2+ > - > .The results are discussed in terms of the lifetime of the exciter copper(I) complex and the irradiation potentials of the cobalt(III) complexes.

Novel Enantioselective Photocatalysis by Chiral, Helical Ruthenium(II) Complexes

The enantioselective photoreduction of the helical substrates of rac- (acac- = acetylacetonato) and rac-- (edta4- = ethylenediaminetetraacetato) with the newly synthesized helical photocatalysts Δ- (or rac)-2+ -2,2'-bipyridine>, and Λ- (or Δ)-3>2+ -2,2'-bipyridine> was realized in the helical-shape recognition reaction with a maximum enantiomer rate ratio (kΔ/kΛ) of 14.7 in 90percent v/v EtOH-H2O at 25 degC.

Significant Phosphine Ligand Effect on the Photochemical Reactivity of (1+) (N-N=1,10-phenanthroline or 2,9-dimethyl-1,10-phenanthroline; L=tertiary phosphine)

Photo-induced electron-transfer reactions between (1-) and (1+) have been investigated.Although (1+) exhibits rather low photochemical reactivity, substituting PPh3 by a bulky and/or donative phosphine significantly enhances the reactivity.In the case of N-N=dmphen, introducing a donative phosphine, P(C6H4OMe-p)3, instead of PPh3 remarkably increases the photochemical reactivity, but in the case of N-N=phen, substituting PPh3 by a donative and bulky phosphine such as P(C6H11)3 much improves the photochemical reactivity.A kinetic study has also been carried out and it is concluded that this reaction proceeds via a dynamic quenching mechanism.Phosphine ligand effects are discussed in terms of the lifetime of the excited copper(I) complexes and the facility of formation of the encounter complex.

Magnetic resonance imaging of the manipulation of a chemical wave using an inhomogeneous magnetic field

The effects of applied magnetic fields on the traveling wave formed by the reaction of (ethylenediaminetetraacetato)cobalt(II) (Co(II)EDTA2-) and hydrogen peroxide have been studied using magnetic resonance imaging (MRI). It was found that the wave could be manipulated by applying pulsed magnetic field gradients to a sample contained in a vertical cylindrical tube in the 7.0 T magnetic field of the spectrometer. Transverse field gradients decelerated the propagation of the wave down the high-field side of the tube and accelerated it down the low-field side. This control of the wave propagation eventually promoted the formation of a finger on the low-field side of the tube and allowed the wave to be maneuvered within the sample tube. The origin of these effects is rationalized by considering the Maxwell stress arising from the combined homogeneous and inhomogeneous magnetic fields and the magnetic susceptibility gradient across the wave front.

Kinetics and mechanism of oxidation of ascorbic acid by cobalt(III) complexes in micellar media

The kinetics of oxidation of L-ascorbic acid (H2A) by Co(bipy)33+, Co(edta)- and Co(atda) (tmd) complexes have been studied spectrophotometrically in the presence of cationic, cetyl trimethylammonium bromide (CTAB) and anionic, sodium dodecylsulphate (SDS) surfactants in weakly acidic and basic media. The rate of ascorbic acid oxidation is influenced by the ionic nature of the micelle, hydrophobicity of the coordinated ligands and the overall charge of the complex used. Ascorbic acid oxidation byCo(bipy)33+ is slowed down in the presence of SDS while rate acceleration is observed in CTAB micellar medium. CTAB micelles also lead to rate enhancement in ascorbic acid oxidation by Co(edta)- complex. However, micellar effect is not very pronounced in the case of neutral Co(atda) (tmd) complex as oxidant Based on kinetic results it can be inferred that the hydrophobic interactions are dominant in the case of Co(bipy)33+ and electrostatic interactions play an important role for Co(edta)- complex.