2 edition of One-step synthesis of dithiocarbamates from metal powders found in the catalog.
One-step synthesis of dithiocarbamates from metal powders
by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC], [Springfield, Va
Written in English
|Other titles||One step synthesis of dithiocarbamates ...|
|Statement||Aloysius F. Hepp ... [et al.].|
|Series||NASA technical memorandum -- 106558.|
|Contributions||Hepp, Aloysius F., United States. National Aeronautics and Space Administration.|
|The Physical Object|
(M=Zn,Cd,Hg) indicating that they might be useful as single source precursors for the synthesis of metal sulphide nanoparticles and thin films . Thermal characterization studies on metal dithiocarbamate complexes were reported in several papers and reviews .File Size: KB. Diiodotrimethylarsine, MeAsI, was treated with cobalt or nickel metal powder to give the metal() complex, [MI(AsMe)]. In the case of cobalt, a metal() complex, [AsMeI][CoI(AsMe)], was also produced, whereas for the nickel reaction only the nickel() complex, [NiI(AsMe)], was formed in quantitative yield. The only ot.
This edition of Progress in Ceramic Technology series contains a select compilation of articles on the topic of nanomaterials processing of powders; thin films, wires and tubes; and composites that were previously published in The American Ceramic Society Bulletin, Journal of the American Ceramic Society, International Journal of Applied Ceramic Technology, Ceramic Engineering . Dithiocarbamates form a large number of complexes with transition metals and give rise to neutral complexes(1). Dithiocarbamates complexes have been investigated extensively(2). The interaction of metal dithiocarbamates with Lewis bases leads to the formation of the corresponding base adducts(3,4).
Metal nanoparticles have been widely used in various fields including electronics, photonics, biomedicine and chemistry because of their fascinating properties 1,2,3,4,5, of investigations Cited by: method for the preparation of nitrones. Several effective metal catalysts and oxidizing agents were then developed for this direct oxidation reaction. Another method for the preparation of nitrones is the oxidation of N,N-disubstituted hydroxylamines6, in which yellow mercuric oxide17 is most commonly used as an oxidant. Although.
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Production of dithiocarbamates via oxidation of metal powders results in a much greater control of impurities, fJrst by the use of metal powders as a starting material and second by simplicity in the chemistry that resultis in only one product.
The dithiocarbamates prepared for M = Fe, Co. and Cu were examined by mass Size: 1MB. Neutral metal dithiocarbamate complexes (M(NR2CS2)X) are well-known precursors to metal sulfides, a class of materials with numerous technological applications.
Get this from a library. One-step synthesis of dithiocarbamates from metal powders. [Aloysius F Hepp; United States. National Aeronautics and Space Administration.;]. Neutral metal dithiocarbamate complexes (M(NR2CS2)X) are well-known precursors to metal sulfides, a class of materials with numerous technological applications.
We are involved in a research effort to prepare new precursors to metal sulfides using simple, reproducible synthetic procedures. Recent Literature. A highly efficient, mild and simple synthesis of dithiocarbamates is based on the one-pot reaction of amines, CS 2, and alkyl halides without using a catalyst under solvent-free conditions.
The reaction is a highly atom-economic process for production of S-alkyl thiocarbamates. One-Step Synthesis of Dithiocarbamates from Metal Powders. MRS ProceedingsDOI: /PROC Aloysius F. Hepp, Maria T. Andras, Christopher C. Landry, Andrew R. Barron. Room-Temperature Synthesis of CuInQ 2 (Q = S or Se) in Non-Aqueous Solution Using an Organoindium by: This method was also expanded for the synthesis of novel xanthates using potassium xanthates and dialkyl azodicarboxylates.
The prepared dithiocarbamates and xanthates were applied as efficient synthetic intermediates for the synthesis of symmetrical and unsymmetrical thioureas, isothiocyanates, and by: 2. Book Editor(s): Stephen J.
Lippard Complexes with a Tetraaza Macrocyclic Ligand and Some Heterocyclic Dithiocarbamates, Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry, 29, 9, (), William E.
Eckles and Phillip E. Fanwick, One-Step Synthesis of Dithiocarbamates from Metal Powders, MRS Proceedings,( Cited by: Synthesis and Characterization of Dithiocarbamate Complexes of Some 3d Metals and their Adducts with Nitrogen Donors Introduction [Page 2] capacity of the molecules to form chelate complexes.
Dithiocarbamates can function as unidentate, bidentate chelating as well as bidentate bridging ligands as shown below7,8,9. dithiocarbamates are white crystalline solids freel y soluble in water. These salts are stable for a long period, but the solutions of dithiocarbamates are t o be prepared freshly whenever required.
Most of the heavy metal compounds of the dithiocarbamates are colored facilitating spectrophotometric studies in visible or near UV Size: KB. Experimental Procedure for Synthesis of Iodocyclization Product 7. To a stirred solution of α-(ethoxyethyl)-diallyl dithiocarbamate 6 (1 mmol) in THF (5 mL) was added I2 ( mmol) and the reaction mixture stirred for 48h at room temperature.
The resulted yellow precipitate was filtered off and washed with THF to give the product 7 in 65% yields. Molecular and supramolecular chemistry of mono- and di-selenium analogues of metal dithiocarbamates.
Coordination Chemistry Reviews, DOI: / Yousef Alghamdi. Composition and Band Gap Controlled AACVD of ZnSe and ZnSxSe1-x Thin Films Using Novel Single Source by: Thermogravimetric analysis of the complexes showed they decomposed to iron sulphide. The complexes were used as single source precursors and thermolysed in HDA to prepare iron sulphide nanoparticles.
The iron sulphide nanoparticles were incorporated into polyvinyl alcohol (PVA) to form iron sulphide/PVA by: 8. Herein, the synthesis possibility of high‐entropy metal carbide powders, namely (Zr Ta Nb Ti )C (ZTNTC), via one‐step carbothermal reduction was first investigated theoretically by analyzing chemical thermodynamics and lattice size difference based on the first‐principle calculations, and then the ZTNTC powders with Cited by:  They have also proven as useful single source precursor for the synthesis of metal sulfide nanoparticles because of the direct metal to sulfur bond in their structure.
[14,15] Different derivatives of dithiocarbamate ligands can influence the properties of the nanoparticles such as size and shape. Ni(II) dithiocarbamate complexes have been synthesized and characterized by UV-Vis, FTIR, and NMR spectroscopic techniques. Electronic spectra measurements indicate that the complexes are four-coordinate square planar geometry while the FTIR confirmed that the dithiocarbamates act as bidentate chelating ligands.
The compounds were used as single source precursors and Cited by: 6. Synonym: Disodium ethylene-d 4-bis(dithiocarbamate) hexahydrate Empirical Formula (Hill Notation): C 4 D 4 H 2 N 2 Na 2 S 4 6H 2 O Molecular Weight: A review of the properties of dithiocarbamates is presented in which a comparison is made of the properties of mono- and dialkyldithiocarbamates.
The various sections deal with the synthesis of dithio-carbamates, their stability in acidic and alkaline solution, their reaction with oxidising agents, their spectra, polarographic behaviour and uses, and with Cited by: General Procedure for Synthesis of Aromatic Dithiocarbamates.
A solution of aromatic amine ( mmol) was dissolved in degassed THF (6 mL), then cooled to 0 °C, and treated with dimsyl lithium solution ( mmol, 2 equiv) or n-BuLi ( mmol, 2 equiv).
After stirring for 30 min at 0 °C, CS 2 ( mmol, 10 equiv) was added. The ice bath was removed and the mixture was Cited by: 5. Title:Metal-dithiocarbamate complexes: chemistry and biological activity VOLUME: 12 ISSUE: 12 Author(s):Graeme Hogarth Affiliation:Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, U.K Keywords:Anti-cancer, chelator, dithiocarbamate, metal complexes, thioureide, lipophilic.
Abstract:Dithiocarbamates are highly versatile mono. A convenient, green, and efficient procedure for the synthesis of S-vinyl dithiocarbamates by a simple one-pot three-component condensation of an amine, carbon disulfide, and alkynes is described in the absence of any transition metal catalyst and under solvent-free conditions.
This clean and improved method selectively furnishes the corresponding (Z)-S-vinyl dithiocarbamates Cited by: 6.ABSTRACT. Synthesis of dithiocarbamates by the one-pot three-component Markovnikov addition reaction of an amine, carbon disulfide and an alkyl vinyl ether or N-vinylpyrrolidone is reported in polyethylene glycol (PEG) under a mild and green procedure with high yields and completelythe products were used as efficient starting materials for .With only 1 mol% of CuCl 2 as catalyst, zinc powder as reductant, and K 2 CO 3 as base, aryl iodides reacted with tetraalkylthiuram disulfides in DMSO furnishing the corresponding aryl dithiocarbamates in good to excellent yields.
This protocol is an improvement of previous work, it features convenient performance, low addition of catalyst, no Cited by: 9.