15685-17-3

Upstream product

• 148-18-5 sodium N,N-diethyldithiocarbamate 

Downstream Products

• 14239-51-1 bis(N,N-diethyldithiocarbamato)mercury(II) 

Relevant academic research and scientific papers

Synthesis and characterization of manganese dithiocarbamate complexes: New evidence of dioxygen activation

(1) Background: Metal dithiocarbamate compounds have long been the subject of research due to their ease of formation, excellent properties and potential applications. However, manganese complexes with dithiocarbamates, to our knowledge, have never been used for medical imaging applications. With the aim of developing a new class of mononuclear manganese(II)-based agents for molecular imaging applications, we performed a specific investigation into the synthesis of mononuclear bis-substituted Mn(II) complexes with dithiocarbamate ligands. (2) Methods: Synthesis in either open or inert atmosphere at different Mn(II) to diethyldithiocarbamate molar ratios were performed and the products characterized by IR, EA, ESI-MS and XRD analysis. (3) Results: We found that only under oxygen-free atmospheric conditions the Mn(II) complex MnL2, where L = diethyldithiocarbamate ligand, is obtained, which was further observed to react with dioxygen in the solid state to form the intermediate superoxo Mn(III) complex [MnL2 (η2-O2 )]. The existence of the superoxo complex was revealed by mass spectroscopy, and this species was interpreted as an intermediate step in the reaction that led the bis-substituted Mn(II) complex, MnL2, to trans-form into the tris-substituted Mn(III) complex, MnL3 . A similar result was found with the ligand L’ (= bis(N-ethoxyethyl)dithiocarbamate). (4) Conclusions: We found that in open atmosphere and in aqueous solution, only manganese(III) diethyldithiocarbamate complexes can be prepared. We report here a new example of a small-molecule Mn(II) complex that efficiently activates dioxygen in the solid state through the formation of an intermediate superoxide adduct.

Stability of diethyl dithiocarbamate chelates with Cu(II), Zn(II) and Mn(II)

Immobilization has been regarded as one of the most effective technology to eliminate heavy metals contamination. However, the stability of immobilization products and the leakage of immobilized heavy metals impeded its further application. In order to depict the stability of chelating complexes C10H20MnN2S4, C10H20CuN2S4 and C10H20ZnN2S4, DSC-TG analysis, DFT calculation and leakage tests were carried out to reveal the stabilities and the potential leakage risks of immobilized heavy metals when sodium diethyl dithiocarbamate was used as soil amendments. The results indicated that the stability of these three chelating complexes was ranked in the order of C10H20CuN2S4> C10H20ZnN2S4> C10H20MnN2S4. Such precipitations as C10H20MnN2S4, C10H20CuN2S4 and C10H20ZnN2S4 were stable under the neutral and alkaline environment. Meanwhile, leakage of immobilized heavy metals decreased with the increasing leaching pH, whereas time and temperature had no significant impact on the leakage of immobilized heavy metals. And the maximum leakage of immobilized heavy metals was lower than the limited concentration.

Molecular structure, natural bond analysis, vibrational and electronic spectra, surface enhanced Raman scattering and Mulliken atomic charges of the normal modes of [Mn(DDTC)2] complex

Theoretical and experimental bands have been assigned for the Fourier Transform Infrared and Raman spectra of the bis(diethyldithiocarbamate)Mn(II) complex, [Mn(DDTC)2]. The calculations have been based on the DFT/B3LYP method, second derivative spectra and band deconvolution analysis. The UV–vis experimental spectra were measured in acetonitrile solution, and the calculated electronic spectrum was obtained using the TD/B3LYP method with 6-311G(d, p) basis set for all atoms. Charge transfer bands and those d-d spin forbidden were assigned in the UV–vis spectrum. The natural bond orbital analysis was carried out using the DFT/B3LYP method and the Mn(II) hybridization leading to the planar geometry of the framework was discussed. Surface enhanced Raman scattering (SERS) was also performed. Mulliken charges of the normal modes were obtained and related to the SERS enhanced bands.

Effective optical faraday rotations of semiconductor EuS nanocrystals with paramagnetic transition-metal ions

Novel EuS nanocrystals containing paramagnetic Mn(II), Co(II), or Fe(II) ions have been reported as advanced semiconductor materials with effective optical rotation under a magnetic field, Faraday rotation. EuS nanocrystals with transition-metal ions, EuS:M nanocrystals, were prepared by the reduction of the Eu(III) dithiocarbamate complex tetraphenylphosphonium tetrakis(diethyldithiocarbamate)europium(III) with transition-metal complexes at 300 C. The EuS:M nanocrystals thus prepared were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), inductively coupled plasma atomic emission spectroanalysis (ICP-AES), and a superconducting quantum interference device (SQUID) magnetometer. Enhanced Faraday rotations of the EuS:M nanocrystals were observed around 550 nm, and their enhanced spin polarization was estimated using electron paramagnetic resonance (EPR) measurements. In this report, the magneto-optical relationship between the Faraday rotation efficiency and spin polarization is discussed.