• d) Two series of azo dyes of selenium have been prepared and have been shown to possess a marked tinctorial value. (gutenberg.org)
  • Many textile and leather articles are dyed with azo dyes and pigments . (cloudfront.net)
  • Therefore, they are used as dyes , and are commonly known as azo dyes , an example of which is Disperse Orange 1 . (cloudfront.net)
  • The commercial success of azo dyes motivated the development of azo compounds in general. (cloudfront.net)
  • Certain azo dyes can break down under reductive conditions to release any of a group of defined aromatic amines . (cloudfront.net)
  • Consumer goods which contain listed aromatic amines originating from azo dyes were prohibited from manufacture and sale in European Union countries in September 2003. (cloudfront.net)
  • h) The following products, diluted to standard strengths, for the production of azo dyes : diazonium salts, couplers used for these salts and diazotisable amines and their salts. (wcotradetools.org)
  • Quinoxaline has also been used in reactive dyes and pigments, azo dyes, fluroscein dyes and it also forms a part of certain antibiotics. (ijpsr.com)
  • At present, dyes are mainly aromatic compounds and heterocyclic structures with polar and color-display groups. (hindawi.com)
  • The more well-characterised ways are the end-on M←N≡N (η1) and M←N≡N→M (μ, bis-η1), in which the lone pairs on the nitrogen atoms are donated to the metal cation. (wikipedia.org)
  • It also forms covalent bonds with atoms of other elements like hydrogen, oxygen, nitrogen, sulphur, phosphorus and halogens. (tiwariacademy.com)
  • In the thermodynamically more stable cis isomer the lone pairs of the amino nitrogen atoms point towards each other, and in the trans form they point in opposite directions. (beilstein-journals.org)
  • The distance between the amino nitrogen atoms changes between 8 Å ( cis ) and 11 Å ( trans isomer). (beilstein-journals.org)
  • Compounds with three contiguous nitrogen atoms in linear format, H2N-N=NH, and hydrocarbyl derivatives. (bvsalud.org)
  • Compounds with three contiguous nitrogen atoms in linear format R2N-N=NR. (bvsalud.org)
  • Some azo compounds, e.g., methyl orange , are used as acid-base indicators due to the different colors of their acid and salt forms. (cloudfront.net)
  • The chemical name is N, N'- two nitro five methyl tetramine. (abrantesfc.com)
  • It is also possible to have four alkyl substituents on the nitrogen. (newworldencyclopedia.org)
  • A commercially important alkyl azo compound is azobisisobutyronitrile (AIBN), which is widely used as an initiator in free-radical polymerizations and other radical-induced reactions. (cloudfront.net)
  • Attempt was made to study organic selenium compounds of the heterocyclic series in reference to those properties leading to tinctorial and pharmaceutical possibilities. (gutenberg.org)
  • b) Some new heterocyclic compounds of selenium were studied and their characteristic properties more closely examined along the desired line. (gutenberg.org)
  • Among the various classes of the nitrogen containing heterocyclic compounds Quinoxaline are important component of severally pharmacologically active compounds. (ijpsr.com)
  • Compounds containing 1, 2, 3-tricarbonyl functionality have been used in the synthesis of a variety of Heterocyclic derivatives 5 . (ijpsr.com)
  • 2022) Chemistry of Heterocyclic Compounds, 58 (11), pp. 567-581. (org.ua)
  • These compounds have a charged nitrogen center, and necessarily come with a negative counterion, so they are called quaternary ammonium salts. (newworldencyclopedia.org)
  • OK, so we're finishing up on talking about aromatic compounds, about the chemistry of benzene. (yale.edu)
  • So much recent chemistry is on other subjects, but much of the classical work was on aromatic compounds, and they still are important. (yale.edu)
  • Friedel, R. A. and M. Orchin (1951) Ultraviolet Spectra of Aromatic Compounds. (photochemcad.com)
  • An important exception to this rule is that compounds of the type RC(O)NR 2 , where the C(O) refers to a carbonyl group, are called amides rather than amines. (newworldencyclopedia.org)
  • The review is summarized and systematized the published data on the multicomponent reactions of ethyl trifluoroacetoacetate, carbonyl compounds (aldehydes and ketones), and nucleophilic reagents. (researchgate.net)
  • b) They have been shown to be chemically easier to handle than the corresponding sulphur compounds. (gutenberg.org)
  • The tricarbonyl compound can be trapped in situ with o -phenylenediamine to give quinoxaline derivatives. (ijpsr.com)
  • These transformations tolerated a broad range of the nucleophilic reagents thus allowing the synthesis of a wide variety of hetero- and carbocyclic compounds including the derivatives of pyridine, pyrimidine, pyrazole, pyran, dioxane, and isoxazole as well as their heterofused derivatives. (researchgate.net)
  • 9.An organic compound having molecular mass 60 is found to contain C=20%, H=6.67% and N=46.67% while rest is oxygen. (infinitylearn.com)
  • Since oxygen is more electronegative than nitrogen, RO- H is typically more acidic than the related R 2 N- H compound. (newworldencyclopedia.org)
  • Compounds which contain C-O bonds each possess differing reactivity based upon the location and hybridization of the C-O bond, owing to the electron-withdrawing effect of sp 2 hybridized oxygen and the donating effects of sp 3 hybridized oxygen. (wikidoc.org)
  • Many azo pigments are non-toxic, although some, such as dinitroaniline orange, ortho-nitroaniline orange, or pigment orange 1, 2, and 5 have been found to be mutagenic . (cloudfront.net)
  • [8] Likewise, several case studies have linked azo pigments with basal cell carcinoma . (cloudfront.net)
  • These complexes, in which a nitrogen molecule donates at least one lone pair of electrons to a central metal cation, illustrate how N2 might bind to the metal(s) in nitrogenase and the catalyst for the Haber process: these processes involving dinitrogen activation are vitally important in biology and in the production of fertilisers. (wikipedia.org)
  • The tricarbonyl group containing compounds can be prepared by treating 3-keto ester with p -nitro sulphonyl peroxide 6 , to give 2-(p- nitro phenyl)-sulfonyl) oxy)-3-keto esters. (ijpsr.com)
  • The sp2 Nitrogen forms 3 valen bonds with the sp2 electrons and with the 2p z. where the electron couple is situated makes p-pi interaction with the pi bond of the sp2 carbon, so the structure is planar (like NH2-NO2) and not triangle piramid. (thevespiary.org)
  • In which of the following compounds, the carbon marked with asterisk is most electronegative? (tiwariacademy.com)
  • In which of the following compounds the carbon marked with asterisk is expected to have greatest positive charge? (tiwariacademy.com)
  • The carbon marked with asterisk is expected to have greatest positive charge in compound *CH₃-CH₂ -Cl. (tiwariacademy.com)
  • The chemical foaming agent is a compound which can release gas such as carbon dioxide and nitrogen and form fine pores in polymer composition after decomposition by heating. (abrantesfc.com)
  • They are normally prepared by directly reacting a metal with nitrogen or ammonia (sometimes after heating), or by thermal decomposition of metal amides: 3 Ca + N2 → Ca3N2 3 Mg + 2 NH3 → Mg3N2 + 3 H2 (at 900 °C) 3 Zn(NH2)2 → Zn3N2 + 4 NH3 Many variants on these processes are possible. (wikipedia.org)
  • 5.The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of 0.1 M sulphuric acid. (infinitylearn.com)
  • Combining the names of functional groups with the names of the parent alkanes generates a powerful systematic nomenclature for naming organic compounds . (wikidoc.org)
  • Treatment of the resulting 2-(nosyloxy)-3-ketoesters with triethyl amine (TEA) in benzene at room temperature results in vic tricarbonyl compound. (ijpsr.com)
  • They are normally prepared by three methods: Replacing labile ligands such as H2O, H−, or CO directly by nitrogen: these are often reversible reactions that proceed at mild conditions. (wikipedia.org)
  • Despite their successful synthesis, using Pd-catalyzed coupling reactions of aryl halides and arylhydrazides [11] followed by Cu(I)-mediated oxidation, the photochemical properties of such compounds have not been studied yet. (beilstein-journals.org)
  • In general, with the exception of fluorinated compounds, haloalkanes readily undergo nucleophilic substitution reactions or elimination reactions . (wikidoc.org)
  • [1] [2] This enables systematic prediction of chemical reactions and behavior of chemical compounds and the design of chemical synthesis . (wikipedia.org)
  • Many binary compounds are known: with the exception of the nitrogen hydrides, oxides, and fluorides, these are typically called nitrides. (wikipedia.org)
  • 2-Halogenoquinoline 1-oxides were prepared in comparatively good yield by the use of permaleic acid as the N-oxidation agent, making it possible to obtain compounds which had hitherto been difficult to prepare. (go.jp)
  • A common choice include replacing chloride ligands by dimethylphenylphosphine (PMe2Ph) to make up for the smaller number of nitrogen ligands attached than the original chlorine ligands. (wikipedia.org)
  • The atomic hydrogen thus formed reacts with the organic compound. (thevespiary.org)
  • Nitrogen bonds to almost all the elements in the periodic table except the first three noble gases, helium, neon, and argon, and some of the very short-lived elements after bismuth, creating an immense variety of binary compounds with varying properties and applications. (wikipedia.org)
  • Compounds which contain Nitrogen in this category may contain C-O bonds, such as in the case of amides . (wikidoc.org)
  • Similarly, an organic compound with multiple amino groups is called a diamine , triamine , tetraamine and so forth. (newworldencyclopedia.org)
  • We also provide analytical pesticides, an extensive line of EPA organohalogens and polycyclic aromatic hydrocarbons (PAHs), APIs and pharmaceuticals, drugs of abuse and deuterated compound mixtures. (calpaclab.com)
  • a) Compounds newly made have been shown to exhibit a distinct tinctorial value in comparison with their analogues. (gutenberg.org)
  • The anti‐proliferative activity of all newly synthesized compounds has been assessed against six human solid tumor cell lines. (researchgate.net)
  • All newly synthesized compounds were screened for anti‐proliferative activity against different human tumor cell lines. (researchgate.net)
  • The chemical element nitrogen is one of the most abundant elements in the universe and can form many compounds. (wikipedia.org)
  • Several reviews (2) of its compounds, including references, have been published, besides the resumes in the chemical dictionaries. (gutenberg.org)
  • remember that chemical compounds are not proper nouns, so lower case is indicated throughout. (newworldencyclopedia.org)
  • The allethrins are a pair of related synthetic compounds used in insecticides. (entrepreneurindia.co)
  • Reducing metal complexes in the presence of a suitable coligand in excess under nitrogen gas. (wikipedia.org)
  • In addition, the CoMoO4@g-CN-modified electrode achieved good operational stability, anti-interfering ability (five-fold excess amount of co-interfering compounds) and reproducibility. (bvsalud.org)
  • 1963) Tables of Spectrophotometric Absorption Data of Compounds Used for the Colorimetric Determination of Elements. (photochemcad.com)
  • Today, dinitrogen complexes are known for almost all the transition metals, accounting for several hundred compounds. (wikipedia.org)
  • a) Organic selenium compounds were reviewed and their properties examined critically with those of allied compounds. (gutenberg.org)
  • The literature was reviewed and classified with reference to the properties under consideration, and new selenium organic compounds were prepared and studied which it is hoped may throw some additional light upon the problem. (gutenberg.org)
  • Coordination compounds: nomenclature of mononuclear coordination compounds, cis-trans and ionisation isomerisms, hybridization and geometries of mononuclear coordination compounds (linear, tetrahedral, square planar and octahedral). (eduvidya.com)
  • Nitrogen can form nitride and nitrate ions. (wikipedia.org)
  • The physical foaming agent is the change of the physical form of a certain kind of material through the fine pores of foam, namely through the expansion of compressed gas, liquid volatilization, or solid dissolution and the formation of the compound. (abrantesfc.com)