Last edited by Yozshulkree
Sunday, May 17, 2020 | History

2 edition of Reactions and stereochemistry of thiolato and sulfenato cobalt (III) complexes found in the catalog.

Reactions and stereochemistry of thiolato and sulfenato cobalt (III) complexes

Daniel L. Herting

Reactions and stereochemistry of thiolato and sulfenato cobalt (III) complexes

by Daniel L. Herting

  • 214 Want to read
  • 35 Currently reading

Published .
Written in English

    Subjects:
  • Cobalt compounds.

  • Edition Notes

    Statementby Daniel L. Herting.
    The Physical Object
    Pagination[12], 153 leaves, bound :
    Number of Pages153
    ID Numbers
    Open LibraryOL14224820M

    Novel complexes of cobalt(II) with sulfonated derivatives of phthalocyanines are synthesized. The influence of the sulfonated group's number in peripheral substituent on solubility of macrocycle and ability to form ordered structures in solution is showed. 2-Pyridinethiolate(1−) (=pyt) is an aromatic ligand and forms a four-membered didentate-N,S chelate upon the previous paper, we reported that the stereochemistry and the oxidation reactivity of pyt–cobalt(III) complexes such as [Co(pyt)(en) 2] 2+ (1), are quite different from those of the 2-aminoethanethiolate–cobalt(III) ones.. For example, the orange 2.

      Heinrich L, Mary-Verla A, Li Y, Vaissermann J, Chottard J-C () Cobalt(III) complexes with carboxamido-N and sulfenato-S or sulfinato-S ligands suggest that a coordinated sulfenato-S is essential for the catalytic activity of nitrile hydratases. Eur J Inorg Chem – Google Scholar. The general preparative route to sulfenato complexes involves stoichiometric oxidation of the corresponding thiolato complex with a 2-equiv oxidant, e.g., H2O2, in aqueous solution.

    Two decades later, the reactions of [Rh 2 (AcO) 2 (N–N) 2 (CH 3 CN) 2]X 2 {N–N = 1,phenantroline (phen) or 2,2′-bipyridine (bpy), 2; X = PF 6 or BF 4, respectively}, among other Rh complexes, were investigated with 2-aminothiophenol (at mole ratios of and ) under aerobic conditions as models for how antitumor active dirhodium(II) bis-polypyridine compounds react with thiol. Seven cobalt() complexes containing five purinethiones [Co(L-,)(en)] and [HL = Hput = 9-purine-6(1)-thione, Haput = 2-aminopurine-6(1)-thione, Htpuo = 3,6-dihydro.


Share this book
You might also like
Present phases of our so-called negro problem.

Present phases of our so-called negro problem.

Chauncey Rea Burr

Chauncey Rea Burr

Automation In Process Chemistry

Automation In Process Chemistry

Laws of the Commonwealth of Pennsylvania

Laws of the Commonwealth of Pennsylvania

effects of 100% oxygen inhalation during recovery in intermittent work

effects of 100% oxygen inhalation during recovery in intermittent work

Police, prisons, and the problem of violence

Police, prisons, and the problem of violence

Promise Not to Tell

Promise Not to Tell

The law and the lawyers

The law and the lawyers

Quranic Text

Quranic Text

Address of the premier of Nova Scotia to the electors of the province

Address of the premier of Nova Scotia to the electors of the province

Local government finance (Wales)

Local government finance (Wales)

Fresh insights on disarmament, demolization, and reintegration

Fresh insights on disarmament, demolization, and reintegration

Pyramids.

Pyramids.

American-Flag Shipping on the Great Lakes

American-Flag Shipping on the Great Lakes

Guide to the 1992 census of agriculture and related statistics.

Guide to the 1992 census of agriculture and related statistics.

Reactions and stereochemistry of thiolato and sulfenato cobalt (III) complexes by Daniel L. Herting Download PDF EPUB FB2

The S and R sulfenato isomers were stable in solution if kept in the dark, but exposure to room light caused a rapid interconversion of the isomers, which led in hr to an equilibrium (AS:AR) mixture.

A slower decomposition reaction also occurred upon exposure to : Daniel L. Herting. Reactions and stereochemistry of thiolato and sulfenato cobalt (III) complexes. Abstract. Graduation date: This thesis describes a study of the synthesis, stereochemistry,\ud and reactivity of cobalt(III) cysteinato (CyS) and related thiolato complexes.\ud The preparation of [Co(en)₂CyS]⁺ resulted in a product solution\ud.

Both of these sulfenato isomers underwent further oxidation by H to form the same product,A4Co(en)2(CyS02)]+. The S and R sulfenato isomers were stable in solution if kept in the dark, but exposure to room light caused a rapid interconversion of the isomers, which leAuthor: Dr.

Lames H. Veger. Reactions in which the sulfenato ligand undergoes 2-equiv reduction at sulfur, 2-equiv oxidation at sulfur, and transfer of oxidizing power from sulfur to an adjacent carbon atom are presented and.

Kinetic study of the oxygen-transfer reactions from the oxo diperoxo complexes of molybdenum(VI) and tungsten(VI) to (thiolato)- and (sulfenato)cobalt(III) complexes Arlene F.

Ghiron Richard C Cited by: The substituted-inert thiolato–cobalt(III) complex is a useful substrate for studying oxygen atom transfer reactions of transition metal peroxide complexes. The thiolato–cobalt(III) complex is oxidized to sulfenato–cobalt(III) complex by chromium(VI) peroxide.

Preparation, Stereochemistry, and CD Spectra of Cobalt(III) Complexes with 1,3-Propanedithiolate and 1,3-Propanedisulfinate. Crystal Structure and Absolute Configuration of (−) CD -(1,3-Propanedisulfinato)(3,6-diazaoctane-1,8-diamine)cobalt(III) Perchlorate Monohydrate.

Request PDF | Intramolecular hydrogen bonds in thiolato‐, sulfenato‐, and sulfinato‐Co(III) complexes | The formation of intramolecular hydrogen bonds is investigated for transition metal. Mono- di- tri- and tetra-nuclear cobalt (iron) complexes containing co-ligands phosphine and thiolate are presented according to the classification by combination of different dentates of the two ligands.

Emphasis is being put on the triand tetranuclear cluster complexes of monodentate phosphines and 1,2-bidentate thiolates. cheminform abstract: kinetics and mechanism of the reaction of hydrogen peroxide with thiolato complexes of cobalt(iii) and chromium(iii).

COMMENTS ON THE NUCLEOPHILICITY OF COORDINATED SULFUR AND THE STABILITY OF COORDINATED SULFENIC ACIDS. Cobalt does not react readily with air. Upon heating the oxide Co 3 O 4 is formed, and if the reaction is carried out above °C, the result is cobalt(II) oxide, CoO.

3 Co (s) + 4 O 2 (g) 2 Co 3 O 4 (s) 2 Co (s) + O 2 (g) 2 CoO (s) Cobalt does not react directly with nitrogen, N 2. Preparations: Co 2 O 3 is formed from oxidation of Co(OH) 2.

CoO when heated at °C converts to Co 3 O 4 Co 3 O 4 when heated at °C reconverts back to CoO. Co 3+ + e- ⇔ Co 2+ V Co 2+ + 2e- ⇔ Co V. no stable [Co(H 2 O) 6] 3+ or [Co(OH) 3 exist since these convert to CoO(OH). [Co(H 2 O) 6] 2+ not acidic and a stable carbonate exists. Cobalt Blue One of the earliest.

Kinetic and thermodynamic study of thiolato and sulfenato Co(III) complexes in water-acetonitrile mixtures. International Journal of Chemical Kinetics36 (1), DOI: /kin Ralf Wünsch, Gabriele Bosl, Christian Robl, Wolfgang Weigand.

Ishii, A.; Ohishi, M.; Nakata, N. Preparation of 3,3-di-tert-butylthiirane trans-1,2-dioxide and its reaction with a platinum(0) complex to give a (disulfenato)platinum(II) complex: regioselectivity of the oxidation of a related (sulfenato–thiolato)platinum(II) complex.

Eur. The cobalt(II) thiolato complexes of formal composition ‘Co(SR) 2’ (R = Ph (1), R = Mes (2)) can be prepared by reaction of [Co(N(SiMe 3) 2) 2thf] with equivalents of RSH (Scheme 1). The mesityl complex 2 could be obtained from the reaction mixtures as a dark brown crystalline product 1 1 [Co(SMes) 2] whereas the dark powder of the.

The ruthenium(II) dithiolate complex (bmmp-TASN)RuPPh3 (1) reacts with O2 under limiting conditions to yield isolable sulfur oxygenated derivatives as a function of reaction time.

With this approach, a family of sulfur−oxygenates has been prepared and isolated without the need for O-atom transfer agents or column chromatography. Addition of 5 equiv of O2 to 1 yields the thiolato/sulfinato.

Other reviews of interest are "Kinetics and mechanism of substitution reactions of cobalt(III) frons-dioximines in non-aqueous media" [9] and the "Splitting of d-orbitals in square planar complexes of copper(II), nickel(II) and cobalt(II)" [10].

COBALT(IV) Organobis(dioximato)cobalt(III) complexes can be oxidised either chemically (Brz, PbO. 4 Cobalt-Catalyzed Hydroformylation • Fisher-Tropsch reaction • Oxo Process – 1st Generation Cobalt Catalyst • Otto Roelen’s contribution • Self-generating and activating catalyst • Limitation: decomposition, n:iso, separation • Replaced by Rh catalyst later.

Oxidation of the sulfenato–thiolato complex 14 with an acetone solution of dimethyldioxirane (DMD) took place at the sulfenato sulfur atom to yield the (sulfinato–thiolato)PtII complex In these reactions GSH is almost completely oxidised to form GSSG and the thiolato complex is oxidised to the sulfenato complex [ where arene is p-cymene or.

Reactions of cobalt(II) ions in solution The simplest ion that cobalt forms in solution is the pink hexaaquacobalt(II) ion - [Co(H 2 O) 6 ] 2+. Note: If you aren't happy about complex ions (including the way they are bonded and named), it would pay you to follow this link and explore the first couple of pages in the complex ions menu before.Pigments (cobalt blue, known in ancient times, and Cobalt green).

Battery sector (e.g. electrodes) estimated as about 11% of production in Steel-belted radial tires. Cobalt has multiple uses as a gamma ray source: * It is used in radiotherapy.

* It is used in radiation treatment of foods for sterilization (cold pasteurization).Treatment of Λ-fac-[Co(d-pen-N,S)3]3– (d-H2pen = d-penicillamine) with Cu+ in water gave a stable CoIII2CuI3 complex, ΛΛ-[Co2Cu3(d-pen)6]3– ([1]3–), having three thiolato–copper(i)–thiolato moieties that bridge two cobalt(iii) centres.

Complex [1]3– was isolated as .