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4,895 Newest Publications about the topic sulfur


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Mechanistic and Preparative Studies of Radical Chain Homolytic Substitution Reactions of N-Heterocyclic Carbene Boranes and Disulfides

03-Jul-2013 | Xiangcheng Pan; Anne-Laure Vallet; Stéphane Schweizer; Karim Dahbi; Bernard Delpech; Nicolas Blanchard; Bernadette G ..., Journal of the American Chemical Society, 2013

Reactions of 1,3-dimethylimidazol-2-ylidene–borane (diMe-Imd-BH3) and related NHC–boranes with diaryl and diheteroaryl disulfides provide diverse NHC–boryl monosulfides (diMe-Imd-BH2SAr) and NHC–boryl disulfides (diMe-Imd-BH(SAr)2). Heating in the dark with 1 equiv of disulfide favors monosulfide ...


Mechanistic Study on the Cleavage and Reorganization of C(sp3)H and CN Bonds in Carbodiimides: Synthesis of 1,2‐Dihydrothiopyrimidines and 2,3‐Dihydropyrimidinthiones through Four‐Component Coupling

02-Jul-2013 | Yang Wang, Fei Zhao, Yi Zhou, Yue Chi, Zitao Wang, Wen‐Xiong Zhang, Zhenfeng Xi, Chemistry - A European Journal, 2013

Abstract This study sheds light on the cleavage and reorganization of C(sp3)H and CN bonds of carbodiimides in a three‐component reaction of terminal alkynes, sulfur, and carbodiimides by a combination of methods including 1) isolation and X‐ray analysis of six‐membered‐ring lithium species ...


Effect of Transition Metal Ion‐Exchanged into the Zeolite Y on Electrical Conductivity and Response of PEDOT‐PSS/MY Composites toward SO2

02-Jul-2013 | Pojjawan Chanthaanont, Anuvat Sirivat, Advances in Polymer Technology, 2013

ABSTRACT This study aims to investigate and compare the effects of different divalent transition metal cations (M2+: Mn2+, Fe2+, Co2+, Ni2+, Cu2+, and Zn2+) exchanged into the hydrated zeolite Y on the electrical conductivity and sensitivity response of Poly(3,4‐ethylenedioxythiophene) doped ...


CuO‐filled aminomethylated polysulfone hybrid membranes for deep desulfurization

28-Jun-2013 | Yan Xia, Guang Lu Han, Qiu Gen Zhang, Yi Gong, Ian Broadwell, Qing Lin Liu, Journal of Applied Polymer Science, 2013

ABSTRACT CuO‐filled aminomethylated polysulfone hybrid membranes were prepared for sulfur removal from gasoline. The as‐prepared membranes were characterized using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X‐ray diffraction (XRD). The separation ...


Sulfur‐Infiltrated Micro‐ and Mesoporous Silicon Carbide‐Derived Carbon Cathode for High‐Performance Lithium Sulfur Batteries

27-Jun-2013 | J. T. Lee, Y. Zhao, S. Thieme, H. Kim, M. Oschatz, L. Borchardt, A. Magasinski, W. I. Cho, S. Kaskel, G. Yushin, Advanced Materials, 2013

Novel nanostructured sulfur (S)–carbide derived carbon (CDC) composites with ordered mesopores and high S content are successfully prepared for lithium sulfur batteries. The tunable pore‐size distribution and high pore volume of CDC allow for an excellent electrochemical performance of the ...


Effects of Nitrogen and Sulfur Fertilization on Free Amino Acids, Sugars, and Acrylamide-Forming Potential in Potato

27-Jun-2013 | Nira Muttucumaru; Stephen J. Powers; J. Stephen Elmore; Donald S. Mottram; Nigel G. Halford, Journal of Agricultural and Food Chemistry, 2013

Nitrogen (N) fertilizer is used routinely in potato (Solanum tuberosum) cultivation to maximize yield. However, it also affects sugar and free amino acid concentrations in potato tubers, and this has potential implications for food quality and safety because free amino acids and reducing sugars ...


Probing the Smallest Molecular Model of MoS2 Catalyst: S2 Units in the MoSn–/0 (n = 1–5) Clusters

27-Jun-2013 | Bin Wang; Ni Wu; Xiao-Bin Zhang; Xin Huang; Yong-Fan Zhang; Wen-Kai Chen; Kai-Ning Ding, Journal of Physical Chemistry A, 2013

Density functional theory (DFT) and coupled cluster theory (CCSD(T)) calculations are carried out to investigate the electronic and structural properties of a series of monomolybdenum sulfide clusters, MoSn–/0 (n = 1–5). Generalized Koopmans’ theorem is applied to predict the vertical detachment ...


A Caveat on SCC-DFTB and Noncovalent Interactions Involving Sulfur Atoms

27-Jun-2013 | Riccardo Petraglia; Clemence Corminboeuf, Journal of Chemical Theory and Computation, 2013

Accurate modeling of noncovalent interactions involving sulfur today is ubiquitous, particularly with regard to the role played by sulfur-containing heterocycles in the field of organic electronics. The density functional tight binding (DFTB) method offers a good compromise between computational ...


Synthesis, transition metal chemistry and catalytic reactions of ferrocenylbis(phosphonite), [Fe{C5H4P(OC6H3(OMe-o)(C3H5-p))2}2]

27-Jun-2013 | Maravanji Shivaramaiah Balakrishna; Sowmya Rao; Joel T Mague, Dalton Transactions, 2013

The new metalloligand ferrocenylbis(phosphonite), [Fe(C5H4PR2)2 (R = OC6H3(OMe-o)(C3H5-p)], (2) is synthesized by the reaction of bis(dichlorophosphino)ferrocene Fe(C5H4PCl2)2 (1) with 4-allyl-2-methoxyphenol. The reactions of 2 with H2O2 and elemental sulfur or selenium afforded ...


A highly photoactive S, Cu‐codoped nano‐TiO2 photocatalyst: Synthesis and characterization for enhanced photocatalytic degradation of neutral red

26-Jun-2013 | Chunyan Yan, Wentao Yi, Hongmei Yuan, Xiaoxia Wu, Faqiang Li, Environmental Progress, 2013

Sulfur and copper codoped TiO2 (S, Cu‐TiO2) were prepared by sol‐gel process. And the samples were characterized by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), UV‐vis diffuse reflectance spectroscopy (DRS), and N2 adsorption (BET ...


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