Cobalt diacetate tetrahydrate

Sobolev, Alexandre N.; Miminoshvili, É. B.; Miminoshvili, K. É.; Sakvarelidze, T. N.

doi:10.1107/s1600536803019093

Cited by 19 publications

(16 citation statements)

References 5 publications

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“….09 Å, CN = 6) 35. We also note that increased Ti content (30% or 50% Ti) favors a longer Co-O distance of 2.01 Å or 2.03 Å as well as an increased Co coordination number (5.6 to 5.1) compared to the samples with less Ti (0% or 14%)…”

mentioning

confidence: 57%

Tuning Composition and Activity of Cobalt Titanium Oxide Catalysts for the Oxygen Evolution Reaction

Seitz

Nordlund

Gallo

et al. 2016

Electrochimica Acta

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Understanding catalyst function to improve activity for the oxygen evolution reaction (OER) is key to increasing the overall efficiency of electrochemical water splitting, a promising method for sustainable and clean production of hydrogen. Using a straightforward and scalable sol-gel synthesis, we explore the effects of metal composition in Co x Ti 1-x O y on electrochemical activity, atomic structure, and electronic state. Physical and electronic characterization reveal that increased amounts of Ti stabilize the 2+ oxidation state of the Co precursor and lead to formation of less active CoO-like catalysts. Conversely, films with Co:Ti ratios of 1:1 or greater result in catalysts with high activity, correlating with greater Co 3+ character, as measured by ex situ XAS for samples as-prepared and after exposure to OER conditions. Additionally,

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mentioning

confidence: 57%

Tuning Composition and Activity of Cobalt Titanium Oxide Catalysts for the Oxygen Evolution Reaction

Seitz

Nordlund

Gallo

et al. 2016

Electrochimica Acta

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“…For the related cobalt(II) acetate dihydrate, see: Jiao et al (2000). For the structure of a hydrated cobalt(II) acetate which has been isolated in similar conditions, see: Sobolev et al (2003). For properties and applications of cobalt carboxylates, see: Eremenko et al (2009); Gates (1992); Parshall & Ittel (1992); Partenheimer (1995).…”

Section: Related Literaturementioning

confidence: 99%

“…It is rather interesting that the use of acetic acid instead of propionic acid in the synthesis of (I) result in the formation of monomeric cobalt(II) acetate tetrahydrate (Sobolev et al, 2003), and the polymeric cobalt(II) acetate dihydrate is formed by recrystallization of cobalt(II) acetate tetrahydrate from acetic acid (Jiao et al, 2000).…”

Section: S1 Commentmentioning

confidence: 99%

catena-Poly[[cobalt(II)-μ-aqua-μ-propanoato-κ²O:O′-μ-propanoato-κ²O:O] monohydrate]

2010

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The title compound, {[Co(C2H5COO)2(H2O)]·H2O}n, was synthesized by the reaction of cobalt(II) carbonate hydrate with aqueous propionic acid. The structure consists of polymeric infinite linear chains with composition [Co(C2H5COO)4/2(H2O)2/2]∞ running along [010]. The chains are formed by Co2+ ions linked with bridging propionate groups and water molecules, with a Co⋯Co distance along the chains of 3.2587 (9) Å. The Co2+ ion is six-coordinated in a strongly distorted octahedral geometry. The chains are connected to each other by a network of O—H⋯O hydrogen bonds involving solvent water molecules.

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“…The unattached oxygen atom of the monodentate acetate group is involved in interand intra-molecular hydrogen bonding. Within the acetate group the C-O bond distance is greater for the strongly coordinated oxygen atom C(22)-O (21) (1.317 Å ) than for the non-coordinated oxygen atom C(22)-O(23)(1.234 Å ) and falls in normal range for Co III -O bonds in cobalt(III) carboxylate compounds [30] but is slightly longer than the Co III -O distances with the L Se 2) ligand. The dimensions of the second molecule are very similar to that of first and have been compared in Table 2.…”

Section: Molecular Structure Of [Co(l Se )(Nn-me 2 En)-(ch 3 Coo ) )mentioning

confidence: 94%

Synthesis, structure and properties of cobalt(II/III) seleno-bisphenolate complexes containing NN bidentate co-ligands: kinetic studies on the reduction of a cobalt(III) complex by ascorbic acid in 80% MeCN–20% water

Mijanuddin

Maity

Ali

et al. 2007

Transition Met Chem

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Two cobalt complexes, [Co(L Se )(phen)] AE CH 2 Cl 2 (1) and [Co(L Se )(N,N-Me 2 en)(CH 3 COO ) )] (2) have been synthesized and characterized by elemental analyses, magnetic measurements, i.r. studies etc. Single crystal X-ray studies reveal that in complex (1) cobalt atom is in +2 oxidation state with trigonal bipyramidal geometry, while in complex (2) it is in +3 oxidation state and surrounded octahedrally. The asymmetric unit of complex (2) contains two crystallographically independent discrete molecules. Complex (1) was found to be paramagnetic with l eff = 2.19 BM indicating a low spin cobalt(II) d 7 system, whereas complex (2) is found to be diamagnetic with cobalt(III) in low spin d 6 state. The kinetic studies on the reduction of (2) by ascorbic acid in 80% MeCN-20% H 2 O (v/v) at 25°C reveal that the reaction proceeds through the rapid formation of inner-sphere adduct, probably by replacing the loosely coordinated AcO ) group, followed by electron transfer in a slow step and is supported by a large Q (formation constant) value.

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Cobalt diacetate tetrahydrate

Abstract: Key indicatorsSingle-crystal X-ray study T = 153 K Mean '(C±C) = 0.001 A Ê R factor = 0.018 wR factor = 0.047 Data-to-parameter ratio = 27.0 For details of how these key indicators were automatically derived from the article, see

Cited by 19 publications

References 5 publications

Tuning Composition and Activity of Cobalt Titanium Oxide Catalysts for the Oxygen Evolution Reaction

Tuning Composition and Activity of Cobalt Titanium Oxide Catalysts for the Oxygen Evolution Reaction

catena-Poly[[cobalt(II)-μ-aqua-μ-propanoato-κ²O:O′-μ-propanoato-κ²O:O] monohydrate]

Synthesis, structure and properties of cobalt(II/III) seleno-bisphenolate complexes containing NN bidentate co-ligands: kinetic studies on the reduction of a cobalt(III) complex by ascorbic acid in 80% MeCN–20% water

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Cobalt diacetate tetrahydrate

Abstract: Key indicatorsSingle-crystal X-ray study T = 153 K Mean '(C±C) = 0.001 A Ê R factor = 0.018 wR factor = 0.047 Data-to-parameter ratio = 27.0 For details of how these key indicators were automatically derived from the article, see

Cited by 19 publications

References 5 publications

Tuning Composition and Activity of Cobalt Titanium Oxide Catalysts for the Oxygen Evolution Reaction

Tuning Composition and Activity of Cobalt Titanium Oxide Catalysts for the Oxygen Evolution Reaction

catena-Poly[[cobalt(II)-μ-aqua-μ-propanoato-κ2O:O′-μ-propanoato-κ2O:O] monohydrate]

Synthesis, structure and properties of cobalt(II/III) seleno-bisphenolate complexes containing NN bidentate co-ligands: kinetic studies on the reduction of a cobalt(III) complex by ascorbic acid in 80% MeCN–20% water

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catena-Poly[[cobalt(II)-μ-aqua-μ-propanoato-κ²O:O′-μ-propanoato-κ²O:O] monohydrate]