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3,508 Newest Publications about the topic sulfur

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A novel approach towards the synthesis of tricyclic systems based on pyridine, pyran, thiopyran, azepine, oxepin, thiepin, and pyrimidine rings under different solvent conditions

29-Jul-2011 | Canadian Journal of Chemistry, 2011

Anand Sachar, Poonam Gupta, Shallu Gupta, and R. L. Sharma - Synthesis of some oxygen, nitrogen, and sulfur based condensed heterocycles by the condensation of dimedone with aromatic monoaldehyde under different solvent conditions has been achieved.

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Structural characterization of a cadmium(II)-sulfato complex, [Cd(N,N′-diethyl thiourea)4(SO4)]

29-Jul-2011 | M. Altaf, H. Stoeckli-Evans, G. Murtaza, A. A. Isab, S. Ahmad, M. A. Shaheen, Journal of Structural Chemistry, 2011

A cadmium(II) complex, tetrakis(N,N′-diethylthiourea)sulfatocadmium(II), [Cd(Detu)4SO4] (1) is prepared and its crystal structure is determined by X-ray crystallography. The crystal structure of the complex consists of an independent molecule with the central cadmium atom coordinated to four ...

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Biologically significant selenium-containing heterocycles

29-Jul-2011 | Coordination Chemistry Reviews, 2011

Selenium represents an essential element for organisms as various diseases can result from selenium deficiency. As a consequence, selenium-containing heterocycles are of considerable biochemical and pharmacological relevance. Selenium-containing heterocycles are often less stable than the ...

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Biological evaluation of a novel water soluble sulphur bridged binuclear copper(II) thiosemicarbazone complex

29-Jul-2011 | European Journal of Medicinal Chemistry, 2011

The reaction of 2-oxo-1,2-dihydroquinoline-3-carbaldehyde 4(N,N)-dimethylthiosemicarbazone (HL) with copper(II) nitrate in methanol yielded water soluble [{Cu(L)(CH3OH)}2](NO3)2·H2O. Structural analysis revealed that the complex consists of centrosymmetric binuclear entities containing ...

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Synthesis via an organic molten salt solvent route and characterization of PbS nanocrystals

28-Jul-2011 | Zhang, Jianjun, Crystal Research and Technology, 2011

Abstract In this paper, four petals flowers‐like and quasi sphere‐like PbS nanostructures were successfully synthesized by an environment friendly organic molten salt solvent (OMSS) route at 200 °C, with different sulfur sources, e.g. thiourea and sodium thiosulfate, respectively. The ...

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Spectrophotometric determination of methimazole, D-penicillamine, captopril, and disulfiram in pure form and drug formulations

27-Jul-2011 | Journal of Analytical Chemistry, 2011

Abstract A spectrophotometric method for the determination of methimazole (MT), D-penicillamine (PA), captopril (CA), and disulfiram (DM) was proposed. The method is based on the reaction of sulfur compound with N,N-dimethyl-p-phenylenediamine (DMPD) in acidic solution, in the presence of Fe3+ ...

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Molecules, Vol. 16, Pages 6349-6364: Novel Library of Selenocompounds as Kinase Modulators

27-Jul-2011 | Daniel Plano; Elena Ibáñez; Alfonso Calvo; Juan Antonio Palop; Carmen Sanmartín, Molecules, 2011

Although the causes of cancer lie in mutations or epigenic changes at the genetic level, their molecular manifestation is the dysfunction of biochemical pathways at the protein level. The 518 protein kinases encoded by the human genome play a central role in various diseases, a fact that has ...

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Sulfur-Bridged Ta–M (M = Mo, Cr) Multinuclear Complexes Bearing a Four-Electron-Reduced Dinitrogen Ligand

26-Jul-2011 | Ryoichi Takada, Masakazu Hirotsu, Takanori Nishioka, Hideki Hashimoto and Isamu Kinoshita, Organometallics, 2011

Organometallics DOI: 10.1021/om200596v

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Composition of the high-molecular-mass components of oil- and bitumen-bearing rocks and their hydrothermal transformation products

26-Jul-2011 | A. M. Kiyamova, G. P. Kayukova, G. V. Romanov, Petroleum Chemistry, 2011

Natural oil- and bitumen-bearing rock samples from Tatarstan multiage deposits with different concentrations of organic matter (OM) and different compositions and types of hydrocarbon fluids have been investigated. It has been shown that hydrothermal treatment in the flow mode in a reducing ...

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Analogy between sulfuryl and phosphino groups: the aromaticity of thiophene-oxide

26-Jul-2011 | Oldamur Hollóczki, László Nyulászi, Structural Chemistry, 2011

Sulfur in thiophene-oxide is pyramidal, thus this heterocycle shows structural similarities with phosphole. The aromaticity measures (e.g., ISEc = 1.1 kcal/mol; NICS(0) = −5.2) are also comparable (for phosphole ISEc = −2.7 kcal/mol; NICS(0) = −5.4) indicating a borderline non-aromatic/slightly ...

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