New Metal -Pentafluorothiophenol Compounds

1978 ◽  
Vol 33 (2) ◽  
pp. 149-150 ◽  
Author(s):  
D. M. Kaminaris ◽  
A. G. Galinos
Keyword(s):  
Ir Spectra ◽  
Analytical Data ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Nonaqueous Solutions ◽  
New Compounds ◽  
Physical And Chemical ◽  
And Chemical Properties

In the present paper the reactions of pentafluorothiophenol with nonaqueous solutions (absolute n-hexane) of anhydrous AlCl3, FeBr3, RhCl3 and CrCl3 are described. Analytical data, some physical and chemical properties and the IR spectra of the new compounds are reported and discussed

Synthese und Eigenschaften von Alkyloxi-und Aryloxi-substituierten Trithiadiborolanen / Synthesis and Properties of Alkoxi and Aryloxi Substituted Trithiadiborolanes

1981 ◽  
Vol 36 (11) ◽  
pp. 1444-1450 ◽  
Author(s):  
Max Schmidt ◽  
Erich Sametschek
Keyword(s):  
Thermal Stability ◽  
Nmr Spectra ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
H Nmr ◽  
New Compounds ◽  
Physical And Chemical ◽  
Thermal Stability Of ◽  
And Chemical Properties

Abstract The first examples of the hitherto unknown 1,2,4-Trithia-3,5-diborolanes with B-O-C-bonds have been synthesized and characterised. The diiodo substituted ring (2) reacts with 2,6-dimethylphenol, to form 3,5-bis-(2,6-dimethylphenyloxi)-1,2,4-trithia-3,5-di-borolane (3) and HI. 3,5-Diethoxi-1,2,4-trithia-3,5-diborolane, 5, and C2H5I are formed via the cleavage of diethylether by 2. From 2 and diisopropylether, the corresponding 3,5-diisopropyloxi-1,2,4-trithia-3,5-diborolane (6) is formed. The unsymmetrical ethers methyl-t-butylether and methylphenylether undergo reactions with 2 resulting in the formation of 3,5-dimethyloxi-1,2,4-trithia-3,5-diborolane (8) (besides t-C4H9I) and 3,5-diphenyloxi-1,2,4-trithia-3,5-diborolane (10) (besides CH3I). The thermal stability of the new compounds is increasing with increasing size of R in the -OR group and from aliphatic to aromatic R in this group. IR, Raman, 1H NMR and 11B NMR spectra of the compounds are reported as well as some physical and chemical properties.

scholarly journals Compounds of Complex Halo and Pseudohalo Acids of the Group II B Metals, Part I Etherate, Pyridine and Aniline Compounds of Zn(II)

1979 ◽  
Vol 34 (8) ◽  
pp. 1101-1106 ◽  
Author(s):  
A. G. Galinos ◽  
J. K . Kouinis ◽  
P. V. Ioannou ◽  
Th. F . Zafiropoulos ◽  
S. P. Perlepes
Keyword(s):  
Solid State ◽  
Ir Spectra ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Uv And Ir Spectra ◽  
Group Ii ◽  
Physical And Chemical ◽  
And Chemical Properties

The preparation of sixteen new etherate, pyridine and aniline compounds of complex halo and pseudohalo acids of Zn(II) is reported.The study of some physical and chemical properties as well as the UV and IR spectra of these compounds are discussed. Tetrahedral structures are proposed for all compounds in the solid state

scholarly journals Synthesis of Picric Acid at Domestic Scales.

2019 ◽  
Author(s):  
Afshan Saleem ◽  
Noureen Rafi ◽  
Sumara Qasim ◽  
Usama Ashraf ◽  
Nasir Hussain Virk
Keyword(s):  
Ir Spectra ◽  
Physical State ◽  
Picric Acid ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Greenish Yellow ◽  
Yellow Color ◽  
Physical And Chemical ◽  
Derivatives Of ◽  
And Chemical Properties

Picric acid and its derivatives are widely used in various applications/industries. The first synthetic dye was prepared in 1771 using picric acid. It was used to dye silk fabric into greenish-yellow color. In this study, Picric acid and their derivatives were synthesized and characterized by their physical and chemical properties. The derivatives of Picric acid which are considered in this research include Picramic acid and Sodium Picramate. The physical properties like melting point, colors, physical state and solubility of Picric acid and its derivatives were determined and confirmed using IR Spectra. IR spectra proved efficient in scanning and mapping.

scholarly journals Some transformations and physicochemical properties of new S-substituted 5-thiophene-(3-ylmethyl)-4R-1,2,4-triazole-3-thiols

2021 ◽  
pp. 50-56
Author(s):  
А. В. Хільковець
Keyword(s):  
Alkaline Medium ◽  
Chemical Properties ◽  
Monochloroacetic Acid ◽  
Esterification Reaction ◽  
Physical And Chemical Properties ◽  
Analysis Methods ◽  
New Compounds ◽  
Physical And Chemical ◽  
Derivatives Of ◽  
And Chemical Properties

Nitrogen-containing heterocyclic compounds are widely represented in modern organic chemistry. A special place among the huge number of substances presented is occupied by derivatives of 1,2,4-triazole due to their uniqueness and prospects. In recent years, these derivatives have remained the object of close attention of both synthetic chemists and researchers engaged in the search for new biologically active substances of a wide spectrum of action, the synthesis of optical materials, dyes, corrosion inhibitors, veterinary drugs, etc. It is known from the literature that the combination of the aromatic heterocycle of thiophene and 1,2,4-triazole is a promising area for research. The result of such combinations is a number of compounds obtained with fairly high yields and a wide range of activities. Thus, further chemical modification of 1,2,4-triazole derivatives by additional administration of a typical thiophene pharmacophore is an urgent task. The aim of the study is to obtain new compounds in a number of S-substituted 5-thiophene-(3-ylmethyl)-4R-1,2,4-triazole-3-thiols and study their physico-chemical properties using complex analysis methods. The study of the physical and chemical properties of the compounds obtained was carried out according to methods that meet the standards of the state pharmacopoeia of Ukraine. The synthesis of new compounds was carried out according to generally accepted methods. The previously obtained 5-thiophene-(3-ylmethyl)-4h-1,2,4-triazole-3-thiol and 5-thiophene-(3-ylmethyl)-4-phenyl-1,2,4-triazole-3-thiol were used as starting compounds. Preparation of thioethanones was performed in an alkaline medium in the presence of methanol. The acids were obtained in an alcohol-alkaline medium with the addition of monochloroacetic acid. To obtain esters, two conventional methods were used. The first method is based on the alkylation in an alkaline-alcohol medium of the starting thiols with isopropyl ester of monochloroacetic acid. The second method is the classical esterification reaction. To confirm the structure and study of the physical and chemical properties, all the resulting compounds were crystallized. As a result, some new compounds that were not previously described were obtained, namely: thioethanones, thioacetamides, thioacetic acids, thioacetates, and a number of other thiopo-derivatives of these initial compounds. The structure and individuality of the obtained molecules were confirmed by elemental analysis (CHNS), IR and 1H NMR spectra. A number of new S-derivatives of 5-thiophene-(3-ylmethyl)-4R-1,2,4-triazole-3-thiols have been obtained. The physical and chemical properties of the obtained compounds are determined and their structure is confirmed using modern analysis methods. Some compounds will be transferred for further research.

NEW CONSIDERATIONS IN ORGANOGERMANIUM-SULPHUR CHEMISTRY

1963 ◽  
Vol 41 (5) ◽  
pp. 1276-1280 ◽  
Author(s):  
Malcolm C. Henry ◽  
Wenzel E. Davidson
Keyword(s):  
Chemical Properties ◽  
Group Iv ◽  
Physical And Chemical Properties ◽  
Sulphur Compounds ◽  
New Compounds ◽  
Physical And Chemical ◽  
First Time ◽  
And Chemical Properties

The successful synthesis of sodium triphenylgermanethiol (1), (C6H5)3GeSNa, and disodium diphenylgermanedithiol, (C6H5)2Ge(SNa)2, have made it possible to carry out reactions with RX type compounds yielding a variety of organogermanium-sulphur compounds. In addition, triphenylgermanethiol, (C6H5)3GeSH, has been synthesized for the first time. Reactions of these compounds are related to analogous group IV element compounds. Physical and chemical properties of these new compounds are also discussed.

scholarly journals Synthesis and structural features of 5-(4-(tert-butyl) phenyl)-4-((R)amino)-4H-1,2,4-triazole-3-thiols

2018 ◽  
pp. 60-65
Author(s):  
I. I. Aksyonova-Seliuk ◽  
O. I. Panasenko ◽  
E. G. Knysh
Keyword(s):  
Chemical Structure ◽  
Chemical Properties ◽  
Biologically Active ◽  
Physical And Chemical Properties ◽  
Tert Butyl ◽  
New Compounds ◽  
Physical And Chemical ◽  
Derivatives Of ◽  
Active Substances ◽  
And Chemical Properties

Chemistry of heterocyclic compounds is one of the most popular sector in organic chemistry. Scientists allocate among them a class of derivatives of 1,2,4-triazole. This class of compounds attracts attention his broad spectrum of biological activity. There are antiviral, anti-inflammatory, anti-tubercular, antimicrobial, antioxidant, actoprotective, anti-cancer and other activities. The derivatives of 1,2,4-triazole have one more important advantage. It is low toxicity. This properties do this class of derivatives promising for researches their chemical structure and biological activity and purposeful search of biologically active substances. The purpose of the work is synthesis of 5-(4-(tert-butyl)phenyl)-4-((R)amino)-4H-1,2,4-triazoles-3-thiols from appropriate ylidene derivatives of 4-amino-5-(4 (tert-butyl)phenyl)-4H-1,2,4-triazoles-3-thiol and research of their physical and chemical properties. The objects of research were 10 new compounds, derivatives of 4-amino-5-(4-(tert-butyl)phenyl)-4H-1,2,4-triazoles-3-thiol. These compounds are the crystal substances which are odorless, insoluble in water and soluble in organic solvents. Investigation of the physical and chemical properties of this compounds was carried out according to the methods listed in the State Pharmacopoeia of Ukraine. The melting temperature of synthesized compounds was determined by device OptiMelt Stanford Research Systems MPA100. The structure of the compound was confirmed by 1H-NMR spectroscopy (Mercury 400) and gas chromatography-mass spectrometry (Agilent 1260 Infinity HPLC). 10 new compounds, derivatives of 4-amino-5-(4-(tert-butyl)phenyl)-4H-1,2,4-triazoles-3-thiol, were synthesized in a study. The chemical structure of the new compounds was confirmed by modern instrumental methods of analysis. Results of the done work can be use in the future search of biologically active substances.

Synthese und Eigenschaften von Brom(methyl)- und Iod(methyl)(organyIthio)gallanen / Synthesis and Properties of Bromo(methyl)- and Iodo(methyl)(organylthio)gallanes

1985 ◽  
Vol 40 (3) ◽  
pp. 335-342 ◽  
Author(s):  
Gerhard G. Hoffmann
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Molar Ratios ◽  
New Compounds ◽  
Physical And Chemical ◽  
And Chemical Properties

The reaction between dibromo- or diiodo(methyl)gallane and the trimethylsilyl sulphides (CH3)3SiSR (R = CH3, C2H5, n-C3H7, i-C3H7. Ph, CH2Ph) have been investigated. Halo(methyl)- (organylthio)gallanes are formed. These compounds and their chloro analogues can also be obtained by the reactions between the dihalo(methyl)gallanes and the corresponding leaddi- (thiolates) in the molar ratios 2:1, or from the halo(dimethyl)gallanes and free thiols. Some physical and chemical properties of the new compounds are given, and the tentative mechanisms of these reactions are discussed. Syntheses of methylgalliumdiiodide and dimethylgalliumhalides via trimethylgallane und galliumtrihalides or methylgalliumdihalides are described.

scholarly journals Two (Sulfone-Amidosulphonyl)-Amides Derived from N-(P-Amidobenzoyl)-L-Glutamine; Optimized Synthesis and Toxicity Study

2016 ◽  
Vol 22 (3) ◽  
pp. 609-615
Author(s):  
Corina Cheptea ◽  
Andreea Celia Benchea ◽  
Marius Gaina ◽  
Dana Ortansa Dorohoi ◽  
Valeriu Sunel
Keyword(s):  
Mechanical Characterization ◽  
Chemical Properties ◽  
Quantum Mechanical ◽  
Physical And Chemical Properties ◽  
Physical Conditions ◽  
Relevant Variables ◽  
New Compounds ◽  
Physical And Chemical ◽  
Derivatives Of ◽  
And Chemical Properties

Abstract Two derivatives of glutamine were synthesized and the most convenient physical conditions for obtaining reactions were established in factorial experiments with temperature and time of reactions considered as relevant variables. A quantum-mechanical characterization for the new compounds was performed by using HyperChem 8.0.6 Programs and their physical and chemical properties were theoretically estimated. The toxicity of two new compounds was experimentally determined.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

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