Selenium Tetrachloride Research Articles

Halogen cations of selenium in disulphuric acid

Selenium tetrachloride and bromide form SeX 3 + ions whereas selenium monochloride and bromide form Se 4 2+ and SeX 3 + ions, when dissolved in disulphuric acid. In disulphuric acid containing chlorine and bromine, selenium forms SeX 3 + ions, selenium monochloride forms Se 2Cl 3 + and Se 2Cl 2Br + whereas selenium monobromide forms Se 2Br 3 +, Se 2X 3 + disproportionates to form SeX 3 + and Se. Similar ions are formed when halogens are added to the yellow solutions of selenium (Se 4 2+) ions in disulphuric acid. All attempts to prepare the iodo derivatives of selenium in disulphuric acid have failed.

Reactions of 1,1-diarylethylenes with selenium compounds

The synthesis of substituted benzoselenopheno[2,3-b]benzoselenophens from 1,1-diarylethylenes was achieved in much higher yields with diselenium dichloride than with seleninyl chloride. 1,1-Bis-(2,4-dimethylphenyl)-ethylene with either selenium tetrachloride or diselenium dichloride yielded the corresponding 2,2-diarylvinyl selenide; reactions of other diarylethylenes with selenium tetrachloride or tetrabromide gave selenium-free products. The reaction with seleninyl chloride was extended to yield a di-1-benzoselenopheno[2,3-b:2′,3′-b′]benzodiselenophen.

The nature of complexes of tetrasulphur tetranitride with Lewis acids

Complexes of tetrasulphur tetranitride with antimony pentachloride, selenium tetrachloride, tellurium tetrachloride, and boron trichloride, and adducts of these complexes with sulphur trioxide, have been prepared. Physical data have been collected and structures proposed.

A gas-phase Raman study of the dissociation of selenium tetrachloride and the vibrational spectrum and molecular structure of selenium dichloride

Selenium tetrachloride is shown by gas-phase laser Raman spectroscopy to be fully dissociated in the vapour to selenium dichloride and chlorine, the vibrational spectrum of gaseous selenium dichloride being entirely consistent with that expected for a non-linear triatomic molecule.

Liquid hydrogen chloride solvent system. XII. Reactions of some sulfur, selenium, and tellurium compounds

The ions Me2SCl+ and MeSCl2+ have been prepared in hydrogen chloride solution from the oxidation of dimethyl sulfide and methanesulfenyl chloride with chlorine, or from methyl sulfur trichloride (MeSCl2+), and characterized as their tetrachloroborates and hexafluorophosphates. Et2SCl+BCl4− and EtSCl2+BCl4− have been prepared analogously. Dimethyl selenium and dimethyl tellurium solutions were oxidized with chlorine to dimethyl selenium dichloride and dimethyl tellurium dichloride.Methanesulfenyl chloride solution was ionized due to the protonation of sulfur, and not to the loss of a chloride ion. Methylchlorosulfonium hexafluorophosphate has been characterized. Methane- and ethane-sulfenyl chloride solutions reacted with boron trichloride giving (RSCl)2BCl3.Sulfur tetrachloride, selenium tetrachloride, and tellurium tetrachloride were sparingly soluble and showed no acidic or basic properties in the solvent. Sulfur monochloride, sulfur dichloride, selenium monochloride, and tellurium dichloride were non-basic in solution.The new compounds, Me2S2.BCl3 and Me2Te.BCl3, have been prepared and characterized.

Solution characteristics of selenium and tellurium tetrahalides

Infrared spectroscopic, molecular weight and electrical conductance data are reported for selenium tetrachloride, tellurium tetrachloride and tetrabromide, and tellurium dichlorodibromide in several non-aqueous, polar solvents. These data are interpreted as indicating these substances to be present primarily as monomolecular species in these solutions, but undergoing a limited ionization. Comparison of the infrared spectrum of crystalline TeCl 2Br 2 with that of the substance in benzene solution suggests a TeClBr + 2Cl formulation for the crystalline material.

A Selenium Heterocyclic from the Reaction of Diphenylacetylene and Selenium Tetrachloride

A Selenium Heterocyclic from the Reaction of Diphenylacetylene and Selenium Tetrachloride

The application of Raman spectroscopy in the determination of structures of some complex compounds

AbstractResults are discussed which have been obtained in the last few years by the application of Raman spectroscopy to the unravelling of structures of complex compounds, e.g. addition compounds of aluminium chloride with nitrosyl chloride, selenium tetrachloride, and tellurium tetrachloride.Arguments are brought forward for considering NOCl. AlCl3 as a compound intermediate in structure between NO+AlCl4− and NOCl…. AlCl3. Compounds such as SeCl4. AlCl3 and TeCl4. AlCl3 clearly show features of the ionic structures SeCl3+AlCl4− and TeCl3+AlCl4− respectively.In Cl3Al. NH3, on the contrary, a covalent bond between Al and N is present. Preliminary results for compounds SeCl4. SO3 and TeCl4. SO3 argue the presence in these compounds of SeCl3+ and TeCl3+ ions respectively as well.

Cl35 Pure Quadrupole Resonances in Acid Chlorides and Chlorates

The pure quadrupole resonances of Cl35 in acid chlorides of some aliphatic dicarboxylic acids have been observed. No resonances have been found in acid chlorides of aliphatic monocarboxylic acids which retain the unsubstituted CH3 configuration at the chain end not occupied by the COCl group. This absence of resonances is attributed to possible randomness in the crystal structure or thermally activated low-frequency reorientations of groups within the molecule. Resonances have also been measured in several chlorates, sulfuryl chloride, iodine monochloride, iodine trichloride, and selenium tetrachloride. Structural and bonding discussions are given for the latter two compounds.

The structure of selenium tetrachloride in the solid and of tellurium tetrachloride in the liquid and the solid state

AbstractRaman spectra were obtained for SeCl4 in the solid and for TeCl4 in the solid and the liquid state. Polarization measurements were performed for the stronger Raman lines of liquid TeCl4. The four stronger Raman lines of SeCl4 are very close in frequency to those of pyramidal AsCl3; there is also a close analogy between the frequencies of the stronger Raman lines of TeCl4 (both in the solid and in the liquid state) and those of antimony trichloride. These findings favour the assumption that solid SeCl4 and TeCl4 have to be written as SeCl3+Cl− and TeCl2+Cl− respectively, SeCl3+ being isosteric with AsCl3 and TeCl2+ with SbCl3. Force constant and frequency calculations have been effected for the hypothetical SeCl3+ and TeCl3+ ions. The results support the above assumption.

The binary system of selenium tetrachloride with aluminium chloride and of tellurium tetrachloride with aluminium chloride

AbstractThe binary freezing‐point diagrams of SeCl4AlCl3 and TeCl4AlCl3 were determined. Both systems show a dissociating compound in a molecular ratio 1: 1 with melting points of 163.8° C resp. 149.3° C.In the case of the binary system SeCl4AlCl3 only one half of the system, with AlCl3 in excess, could be determined because of the decomposition of SeCl4 at higher temperatures. The compound TeCl4 · AlCl3 could be distilled in high‐vacuum without decomposition.An approximate value for the heat of fusion of both addition compounds was calculated.

配糖體のα, β轉換に關する研究

α-Methylmaltoside heptaacetate, a new isomer of β-methylmaltoside heptaacetate, was prepared through the transformation-of the latter with the aid of antimony pentachloride, and, it was found that titanium tetrachloride and selenium tetrachloride were, on the contrary, not effective. The α-isomer was obtained in the following way. β-methylmaltoside heptaacetate was tre-ated with antimony pentachloride in chloroform solution at 20°C for about two hours. The reaction mixture was poured into ice-water, and the chloroform layer was washed with water, dried with anhydrous sodium sulfate, concentrated in vacuo, and then petroleum-ether was added. A crystalline mass separated. It was dissolved in boiling absolute alcohol, and purified by diluting alcohol concentration with water, to 50% and 30% successively, and finally recrystallized from 30% alcohol. The purified crystal has the melting point of 68° (uncorr.) and the [α]20D of 130.6° (chloro-form). It is concluded that the crystal obtained from β-methylmaltoside heptaacetate by the action of antimony pentachioride is the α-isomer.

The Action of Selenium Tetrachloride on Some Esters of Salicylic Acid1

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Action of Selenium Tetrachloride on Some Esters of Salicylic Acid1R. E. Nelson, Ed. F. Degering, and John A. BilderbackCite this: J. Am. Chem. Soc. 1938, 60, 5, 1239–1241Publication Date (Print):May 1, 1938Publication History Published online1 May 2002Published inissue 1 May 1938https://doi.org/10.1021/ja01272a067RIGHTS & PERMISSIONSArticle Views54Altmetric-Citations3LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (322 KB) Get e-Alerts Get e-Alerts

A Study of the Interaction of Selenium Tetrachloride with Substances Containing the Reactive Methylene Group.

A Study of the Interaction of Selenium Tetrachloride with Substances Containing the Reactive Methylene Group.

The Reaction between Selenium Tetrachloride and Copper.

The Reaction between Selenium Tetrachloride and Copper.

CCXCIII.—Researches on residual affinity and co-ordination. Part IX. Interaction of selenium tetrachloride and β-diketones

CCXCIII.—Researches on residual affinity and co-ordination. Part IX. Interaction of selenium tetrachloride and β-diketones