- Preparation method and application of iron dithiocarbamate complex catalyst
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The invention discloses a preparation method and application of an iron dithiocarbamate complex catalyst, the iron dithiocarbamate complex is prepared by taking ammonium ferrous sulfate and N, N-dimethyl dithiocarbamate ligand as raw materials and distilled water, ethanol and DMF as solvents through solvothermal reaction; the prepared iron complex is used as a catalyst of Hantzsch, is high in catalytic activity and can be recycled for multiple times; solvents for catalytic reaction are water and ethanol, the pollution is small, and the iron complex as a catalyst has a wide application prospectin the fields of biomedical synthesis and catalytic materials. The method has the advantages of mild reaction conditions, low cost and low equipment investment, and is suitable for batch production.
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Paragraph 0018-0019; 0020-0021; 0022-0023
(2020/09/16)
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- Dithiocarbamate derivatives of μ-thiocarbyne complexes: Synthesis and X-ray molecular structure of [Fe2(μ-CS)(μ-CSMe) (μ-S2CNMe2)Cp2]
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Reaction of [Fe2(μ-CS)(μ-CSMe)Cp2(CO)2]+ (1) with sodium N,N-dimethyldithiocarbamate [Me2dtc]Na affords a mixture of the dithiocarbene [FeFe(μ-CS){μ-C(SMe)SC(S)NMe2}Cp(CO)] (2) and the thiocarbyne [Fe2(μ-CS)(μ-CSMe)(μ-S2CNMe2)Cp2] (3). Complex 2 is quantitatively converted into 3 by photochemical irradiation. The X-ray molecular structure of 3 demonstrates the presence of three bridging ligands and exhibits the shortest Fe-Fe interaction found in similar systems [2.453(1) A?]. Complex 3 can also be obtained by reacting [Me2dtc]- with the di-solvento thiocarbyne [Fe2(μ-CS)(μ-CSMe)(NCMe)2Cp2]+ (1a). By contrast no stable addition product has been isolated in analogous reactions involving the thiocarbyne [Fe2(μ-CO)(μ-CSMe)Cp2(CO)2]+ (1b). The [Me2dtc]- nucleophilic addition at the μ-C to form [Fe2(μ-CO){μ-C(CN)SC(S)NMe2}Cp2(CO)2] (4a) is obtained starting from [Fe2(μ-CO){μ-C(CN)(SMe2)}Cp2(CO)2]SO3CF3 (1d). Photochemical reaction of the cyanocarbene 4a causes intramolecular ring closure affording [FeFe(μ-CO){μ-C(CN)SC(S)NMe2}Cp2(CO)] (5a).
- Albano, Vincenzo G.,Bordoni, Silvia,Busetto, Luigi,Palazzi, Antonio,Sabatino, Piera,Zanotti, Valerio
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- Reactivity of tricarbonyl(η5-cyclopentadienyl)(dimethyldithiocarbamato)tungsten towards coordinatively unsaturated species
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Visible light irradiation of solutions containing [(η5-C5H5)(CO)3 WSC(S)NMe2] (1) and Fe2(CO)9 or Mn2(CO)10 leads to a transmetallation type of reaction and formation of Fe(S2CNMe2)2 and Mn(CO)4(S2CNMe2) respectively. However, the reaction or 1 with M(PPh3)4, M = Pt, or Pd, leads to conversion to the dicarbonyl chelate complex [(η5C2H5(CO)2 W(S2CNMe2)].
- Mathur, Pradeep,Thimmappa
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p. 119 - 122
(2008/10/08)
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- THE DIRECT ELECTROCHEMICAL SYNTHESIS OF DIALKYLDITHIOCARBAMATE AND DIETHYLDITHIOPHOSPHATE COMPLEXES OF MAIN GROUP AND TRANSITION METALS
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Dialkyldithiocarbamate derivatives (R2NCS2)nM of a number of metals (M=Fe, Co, Ni, Cu, Ag, Zn, Cd, In, Tl) have been synthesised in good yield by electrochemical oxidation of appropriate sacrificial anodes in non-aqueous solutions of either the corresponding tetraalkylthiuran disulphide (R2NCS2)2 (R=Me, Et) or a mixture of carbon disulphide plus the secondary amine R2NH (R=Et, i-Pr; R2NH=piperidine).Similar experiments with solutions of (EtO)2P(S)SH (=HL) gave MLn* derivatives (M=Fe, Co, Ni, Cu, Ag, Au, Zn, Cd, Hg, Ga, In, Tl) while in the presence of HL+1,10-phenanthroline, MLn.phen derivatives were obtained for M=V, Mn, Fe, Co, Zn, and Ga.
- Geloso, Corrado,Kumar, Rajesh,Lopez-Grado, Jaime Romero,Tuck, Dennis G.
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p. 928 - 932
(2007/10/02)
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