15365-75-0

Basic information

• Product Name: hexaamminecobalt(II)
• Synonyms: hexaamminecobalt(II)
• CAS NO: 15365-75-0
• Molecular Formula: CoH18 N6
• Molecular Weight: 0
• EINECS: 259-674-1
• Mol File: 15365-75-0.mol
• Article Data: 15

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: g/cm³
• Vapor Pressure: 1.41mmHg at 25°C
• CAS DataBase Reference: hexaamminecobalt(II)(CAS DataBase Reference)
• NIST Chemistry Reference: hexaamminecobalt(II)(15365-75-0)
• EPA Substance Registry System: hexaamminecobalt(II)(15365-75-0)

Safety Data

• Hazardous Substances Data: 15365-75-0(Hazardous Substances Data)

Usage

InChI:InChI=1/Co.6H3N.H3O4P/c;;;;;;;1-5(2,3)4/h;6*1H3;(H3,1,2,3,4)/q+3;;;;;;;/p-3

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Downstream Products

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Relevant articles and documents

Magnetic Separation of Metal Ions

The magnetic separation was investigated for Co2+ (9500 ?? 10-6 cm3 mol-1) and Fe3- (14600 ?? 10-6 cm3 mol-1) ions and for Cr 3+ (6200 ?? 10-6 cm3 mol-1) and Al3+ (-2 ?? 10-6 cm3 mol -1) ions. The metal ion solutions were spotted on a silica gel support, and exposed to a magnetic field of 410 kOe2 cm-1 intensity ?? gradient. The Co2+ ions move farther toward the maximum field than the Fe3+ ions. The result is explained by the fact that the Fe3+ ions are adsorbed more strongly on the silica gel surface than the Co2+ ions. The Cr3+ ions move farther toward the field center than the Al3+ ions. This occurs because the Cr3+ ions are attracted more strongly by the magnetic force than the Al3+ ions. It is demonstrated that the separation makes effective use of the adsorption activities as well as the magnetic susceptibilities.

Electromicrogravimetric study of underpotential deposition of Co on textured gold electrode in ammonia medium

Formation of a layer of a metal M on a foreign metal substrate, S, at potentials positive to its reversible potential, Er, (underpotential deposition, UPD) is a phenomenon that appears only in some systems. In the case of the UPD process of Co on a gold substrate, there is still a controversy about its existence, for which reason, in this study, voltammetry and chronoamperometry were coupled with a quartz microbalance in ammonium solution to better understand its formation mechanism. The results obtained show that the Co forms only one layer on the substrate before the bulk deposition of cobalt occurs. During the UPD process, the Co atom completely transfers its two electrons to the electrode and is adsorbed as a discharged species. The monolayer charge density, determined by electromicrogravimetry, is 448 μC cm-2 and probably corresponds to a commensurate overlayer on the gold substrate. In addition, the UPD process is controlled by adsorption as shown by voltammetric experiments. Finally, the analysis of the process of Co monolayer destruction (desorption) shows a mechanism different from that in the formation process, possibly due to H adsorption on the substrate produced during the process of adsorption of Co. The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

Reduction of Cobalt(III) Complexes by Intramolecular Electron Transfer from Bound Free Radicals. A Pulse Radiolytic Study

The specific rates of reduction of 3+ by a series of nitrobenzoate and nitrogen heteroatomic anion radicals are reported.The rates of intramolecular electron transfer from the same anion radicals to a central cobalt(III) bound to them via a carboxylate group are reported, as well as for some pyrazine carboxylate anion radicals bound to the cobalt via the carboxylate and the N1 atom.The factors affecting the rate of intramolecular electron transfer processes are discussed in detail.

Magnetodynamic effects on outer-sphere electron-transfer reactions: A paramagnetic transition state

The effect of the magnetic field on the rate of outer-sphere electron-transfer reactions has been investigated as a function of the field intensity, between 0 and 9 T, and at a given temperature. In complexes of d6 metal ions, i.e., Ru(II) and Co(III), the rate constant exhibits a complex dependence on the field: a complexity associated with field-induced changes of the electronic matrix element and the activation energy. Changes in the activation energy have been investigated as a function of the temperature at a given field intensity. These measurements have shown that the magnetic susceptibility of activation has the large positive values that are expected for a strongly paramagnetic transition state. The magnetic field effects are discussed in terms of symmetry-determined selection rules for the coupling of the initial and final electronic states of the reactions.