10534-89-1

Usage

Chemical Properties

solid

Uses

Different sources of media describe the Uses of 10534-89-1 differently. You can refer to the following data:
1. As reagent for pyrophosphoric acid, for the estimation of phosphate.
2. Hexaamminecobalt(III) chloride is a component of structural biology methods, especially for DNA or RNA, where the positive ions stabilize the tertiary structure of the phosphate backbone, which favors to solve their structure by X-ray crystallography. It serves as an excellent antibacterial and antiviral property.

Preparation

Synthesis of hexaamminecobalt(III) chloride2CoCl2+10NH3+2NH4Cl+H2O2 →2[Co(NH3) 6]Cl3+2H2OReaction. Dissolve 2.5 g (10.5 mmol) of cobalt(II) chloride hexahydrate and 1.7 g (32 mmol) of ammonium chloride (about 195% excess) in 15 mL of distilled water. Add 0.5 g of activated charcoal and 23 mL (380 mmol) of concentrated aqueous ammonia (about 624% excess). Cool the reaction mixture to 0 oC in an ice bath. Slowly add 2 mL (19.5 mmol) of 30% hydrogen peroxide (about 271% excess), with stirring – maintain the temperature below 10°C. After the hydrogen peroxide has been added, heat the reaction mixture to 60°C for about 30 minutes. Cool the reaction mixture to 0 oC to cause precipitation of the product.

General Description

Hexammine cobalt(III) is considered an analog of fully solvated magnesium, capable of activating some enzymes that requires magnesium. It is useful in DNA condensation studies.

Purification Methods

It crystallises from warm water (8mL/g) on cooling. [Bjerrum & McReynolds Inorg Synth II 217 1946.]

InChI:InChI=1/C6H12N4.ClH.Co/c1-7-2-9-4-8(1)5-10(3-7)6-9;;/h1-6H2;1H;/q;;+2/p-1

Upstream product

• 7647-01-0 hydrogenchloride 
• 7664-41-7 ammonia 
• 13859-51-3 pentaaminechlorocobalt(III) dichloride 
• 7646-79-9 cobalt(II) chloride 
• 14700-96-0 clorine 
• 10241-04-0 cobalt(III) chloride 
• 7440-48-4 cobalt 
• 7732-18-5 water 

Downstream Products

• 30364-77-3 α-triglycinecobalt(III) 
• 55448-50-5 α-trialaninecobalt(III) 
• 26079-87-8 {Colc3} 
• 15279-18-2 [Co(NH₃)6]⁽³⁺⁾*[Co(CO₃)3]^(3-)=[Co(NH₃)6][Co(CO₃)3] 

Related news

A study of the performance of hexaamminecobalt(III) chloride and tris(2,4-pentanediono)cobalt(III) as colouring materials for poly(vinyl chloride) and polystyrene08/11/2019

The compounds hexaamminecobalt(III) chloride and tris(2,4-pentanediono)cobalt(III) have been prepared. The compounds have octahedral structures. The initial decomposition temperature of the compounds has been obtained by thermogravimetry. The performance of the compounds as colouring materials f...detailed

Second-sphere coordination complex via hydrogen bonding: Synthesis, characterization, X-ray crystal structure determination and packing of hexaamminecobalt(III) chloride di(para-nitrobenzoate)08/09/2019

A reddish orange coloured crystalline solid of hexaamminecobalt(III) chloride di(para-nitrobenzoate) was obtained when hexaamminecobalt(III) chloride was reacted with the sodium salt of para-nitrobenzoic acid (1:3 molar ratio) in hot aqueous medium. This cobalt(III) complex salt has been charact...detailed

Role of second-sphere coordination in anion binding: Synthesis, characterization and X-ray structure of hexaamminecobalt(III) chloride hydrogen phthalate trihydrate and sodium hexaamminecobalt(III) benzoate monohydrate08/08/2019

In an effort to utilize [Co(NH3)6]3+cation as a new host for carboxylate ions, orange coloured crystalline solids of composition [Co(NH3)6]Cl(C8H5O4)2·3H2O (1) and Na[Co(NH3)6](C7H5O2)4·H2O (2) were obtained by reacting hot aqueous solutions of hexaamminecobalt(III) chloride with potassium hyd...detailed

Cationic cobaltammine as anion receptor: Synthesis, characterization, single crystal X-ray structure and packing analysis of hexaamminecobalt(III) chloride (R,R)-tartrate monohydrate08/06/2019

In an effort to utilize the [Co(NH3)6]3+ cation as a new anion receptor (binding agent) for dihydroxy dicarboxylate anion i.e., tartrate, orange single crystals of hexaamminecobalt(III) chloride (R,R)-tartrate monohydrate, [Co(NH3)6]Cl(C4H4O6)·H2O, were obtained by reacting hexaamminecobalt(III...detailed

Relevant academic research and scientific papers

Cationic cobaltammines as anion receptors: Synthesis and characterization of [Co(NH3)6](4-np)3.4H2O, [Co(NH3)6](2,4-dnp)3 and [Co(NH 3)6](2,4,6-tnp)3

In an effort to utilize [Co(NH3)6]3+ cation as a new host for mono-, di- and tri-substituted nitrophenolate anions, yellow solids of composition [Co(NH3)6](4-np) 3.4H2O, [Co(NH3)6](2,4-dnp) 3, and [Co(NH3)6](2,4,6-tnp)3 were obtained in high yields by reacting sodium salts of 4-np, 2,4-dnp and 2,4,6-tnp (where np=nitrophenolate, dnp=dinitrophenolate and tnp=trinitrophenolate,) with [Co(NH3)6]Cl3 respectively in 3:1 molar ratio in hot aqueous medium. These cobalt(III) complex salts have been characterized by elemental analyses and spectroscopic techniques (UV/Visible, IR and NMR). Single crystal X-ray structure determination of [Co(NH3) 6](4-np)3.4H2O revealed the presence of discrete ions, [Co(NH3)6]3+ and C 6H4NO3- in addition to four lattice water molecules in the solid state. A strong network of hydrogen bond interactions (N-H?O (phenolate), N-H?O (nitro), O-H?O (water) stabilize the crystal lattice. The formation of these salts and measurement of solubility products suggests that [Co(NH3) 6]3+ present in [Co(NH3)6]Cl 3 may be used as anion receptor for the nitrophenolate ions.

Cobal(III) Complexes with 6-nXn> type Ligands. IV. The Preparation and Properties of Tetraammine(salicylideneaminato)cobalt(III) and Diamminebis(salicylideneaminato)cobalt(III) Complexes

Tetraammine(salicylideneaminato)cobalt(III) complexes, (NH3)4>X2*nH2O (X: Cl, NO3, ClO4, and picrate) and diamminebis(salicylideneaminato)cobalt(III) complexes, 2(NH3)2>X*nH2O (X: Cl, NO3, ClO4, and picrate), have been isolated from a reaction mixture of CoCl2*6H2O, 25percent aqueous ammonia, 30percent H2O2 and salicylaldehyde, and characterized.In the latter complexes, the three isomers of green, orange and brown color have been isolated by column chromatography on alumina and their configurations have been established by their NMR spectra, i.e., the configuration of the green complex is in the trans-trans-trans positions for two ammine ligands, and two phenoxyl groups and two CH=NH groups of the coordinated salicyaldehydeaminato ligands, respectively, while those of the orange and brown complexes are in the trans-cis-cis and cis-cis-trans positions, respectively.

Role of second-sphere coordination in anion binding: Synthesis, characterization and X-ray structure of hexaamminecobalt(III) chloride hydrogen phthalate trihydrate and sodium hexaamminecobalt(III) benzoate monohydrate

In an effort to utilize [Co(NH3)6]3+cation as a new host for carboxylate ions, orange coloured crystalline solids of composition [Co(NH3)6]Cl(C8H5O 4)2·3H2O (1) and Na[Co(NH 3)6](C7H5O2) 4·H2O (2) were obtained by reacting hot aqueous solutions of hexaamminecobalt(III) chloride with potassium hydrogen phthalate and sodium benzoate in 1:3 molar ratio, respectively. The title complex salts were characterized by elemental analyses and spectroscopic studies (IR, UV/Visible and NMR). Single crystal X-ray structure determinations revealed the formation of second-sphere coordination complexes based on hydrogen bond interactions. In complex salt 1 only two out of three ionisable chloride ions present in [Co(NH3)6]Cl3 were replaced by two C8H5O4- ions whereas in complex salt 2 all the three ionisable chloride ions present in [Co(NH3)6]Cl3 were replaced and the final product was an adduct with another mole of sodium benzoate in solid state. The crystal lattice is stabilized by electrostatic forces of attraction and predominantly N-H?O interactions.

Synthesis, structure, and magnetic properties of Ni and Co nanoparticles encapsulated by few-layer h-BN

Metal nanoparticles with high magnetization values and good stability in acid and base environments have potential applications in industry, biological, and environmental fields. In this paper, we demonstrated a novel approach to synthesize Ni and Co nanoparticles encapsulated by few-layer h-BN (i.e., Ni@h-BN and Co@h-BN) via annealing of freshly prepared metal ammine complexes ([Ni(NH3)6]Cl2or [Co(NH3)6]Cl3) and KBH4with flowing nitrogen gas at 900 °C for 2 h. Formation of Ni@h-BN and Co@h-BN was observed from X-ray diffraction patterns, scanning electron microscopy and transmission electron microscopy. Bonding nature and elemental composition were also characterized by Fourier-transform infrared spectroscopy and Energy-dispersive X-ray spectroscope. Bonding formation process was illustrated by DSC/TGA analysis. Ni and Co NPs were found encapsulated into h-BN shells (c.a. 15 layers) with a high yield amounting to 42.6%. Additionally, the obtained saturation magnetization and coercivity of Ni@h-BN and Co@h-BN were 10.9 emu/g and 116 Oe, 83.3 emu/g and 62 Oe, respectively. Hence, the excellent performance of Co@h-BN and Ni@h-BN, especially the latter of which was prepared for the first time, could pave the way for application of h-BN encapsulation.

KINETICS AND PHOTOEFFECTS OF OXIDATION AND REDUCTION OF HEXAAMMINECOBALT COMPLEX IN ALKALINE MEDIA.

Cyclic voltammograms of hexaamminecobalt complex have been measured in high pH solutions. The spectroscopic result suggested that hydroxoamminecobalt complex adsorbed on the electrode surface during cathodic polarization, and this species grew to form cobalt hydroxide after a long time of electrolysis. Based on these results, the reaction mechanism is discussed. The effect of light on the electrode process has been studied by irradiating with ultraviolet light of the 254 nm mercury resonance line. It is indicated that the hydroxoammine complex is decomposed to cobalt hydroxide and free ligand under light.

A recyclable cobalt(iii)-ammonia complex catalyst for catalytic epoxidation of olefins with air as the oxidant

[Co(NH3)6]Cl3and other ammonia complexes with different external anions or metal ions were synthesized to catalyze the epoxidation of α-pinene. The synthesized complexes were characterized using XRD, SEM, TGA, FTIR and UV spectra. With air as the oxidant, [Co(NH3)6]Cl3exhibited excellent catalytic activity for the epoxidation of α-pinene among the prepared complexes. The conversion of α-pinene reached 97.4%, with 98.3% selectivity of epoxide when using a small amount of cumene hydroperoxide (CHP) as the initiator. The results revealed that a single Co(iii) system can also catalyze the epoxidation process in the absence of Co(ii), even showing better catalytic performance than single Co(ii). Recycling experiments showed that there was no significant drop in activity after 10 cycles, demonstrating that it is a stable and efficient heterogeneous catalyst for the epoxidation of α-pinene. The excellent recycling performance may be attributed to the stability of the coordination complex itself.

Influence of the metal centers on the pKa of the pyrrole hydrogen of imidazole complexes of (NH3)5M3+, M(III) = Co(III), Rh(III), Ir(III), Ru(III)

The pKa's at 298 K, μ = 0.10 (NaCl), and the temperature dependence (273-343 K) for the deprotonation of the pyrrole NH of several imidazoles coordinated to (NH3)5M3+ moieties (M = CoIII, RhIII, IrIII, RuIII) are reported. A greater importance of dn configuration over ion size is found. Data summarized for various systems are as follows (ligand, M (pK298, ΔHa° in kcal/mol, ΔSa° in eu)): imidazole = imH, CoIII (9.99, 14.0 ± 0.5, 1.3 ± 1.6), RhIII (9.97, 13.6 ± 0.3, 0.1 ± 1.3), IrIII (10.05, 13.4 ± 0.3, 1.2 ± 1.0), RuIII (8.9, 10.0 ± 0.8, 3.7 ± 1.2); 2-methylimidazole = 2-MeimH, CoIII (10.67, 17.8 ± 0.7, 11.2 ± 2.4); 2,4(5)-dimethylimidazole = 2,5-Me2imH, CoIII (11.04, 13.4 ± 0.5, 5.3 ± 1.6), RuIII (10.20, 13.2 ± 0.6, -2.1 ± 1.6). 1H NMR spectra of low-spin d6 complexes of imidazoles and ring-methylated imidazoles are discussed for CoIII, RhIII, IrIII, and RuIII. C-2 and remote ring, C-5, substituents are shifted downfield relative to the free imidazole ligand in the order H+ > CoIII > RhIII > IrIII. The C-4 position is influenced competitively by σ-withdrawal ring substituents and TIP effects for CoIII. Assignments of the remote isomer for (NH3)5M(2,5-Me2imH)3+ (M = CoIII, RuIII) are made from the 1H NMR spectra of the CoIII and RuII complexes. The RuIII complexes of 2,5-Me2imH and the imidazolate form (2,5-Me2im-) both exhibit LMCT spectra. The imidazolato form has three bands at 655, 377, and 272 nm, proposed for II1 → IId, II2 → IId, and n → IId transitions, where II1, II2, and n are the highest HOMO's of the imidazolato ring.

NMR Study of Molecular Motion and Rotational Tunneling in Co(NH3)6Cl3

Molecular motions in hexammine cobalt chloride have been studied over a wide range of temperatures using wide-line and pulsed 1H NMR techniques.From five well-defined plateaus in the temperature dependence of the second moment and from four relaxation peaks information about various rotational processes has been obtained on the basis of the known crystal structure.Assignment of the data has been made to the one-dimensional rotation or tunneling of NH3 groups (activation energies 5.6 and 11 kJ/mol, respectively) and to the three-dimensional rotation of four nonequivalent Co(NH3)63+ octahedra (activation energies 19, 34, 41, and 47 kJ/mo,, respectively).Rotational tunneling of NH3 groups is discussed in some detail.

ISOLATION OF AMMINE(8-QUINOLINOLATO)COBALT(III) CHLORIDE

Tetraammine(8-quinolinolato)cobalt(III) chloride hydrate and diamminebis(8-quinolinolato)cobalt(III) chloride hydrate have been isolated and characterized by analitical and spectroscopic method.