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Thallium(I) Nitrate
Thallium(I) nitrate, also known as thallous nitrate, is a thallium compound with the formula Tl NO3. It is a colorless and highly toxic salt. Preparation Thallium(I) nitrate can be produced by reacting thallium(I) iodide with nitric acid Nitric acid is an inorganic compound with the formula . It is a highly corrosive mineral acid. The compound is colorless, but samples tend to acquire a yellow cast over time due to decomposition into nitrogen oxide, oxides of nitrogen. Most com .... However, the production is simpler starting from the metal, its hydroxide or the carbonate: Heinrich Remy: ''Lehrbuch der Anorganischen Chemie'' Band I + II, Leipzig 1973. : : Toxicity Thallium(I) nitrate is extremely toxic, like many other thallium compounds. It is highly toxic by ingestion but can also be absorbed through skin due to its solubility in water.National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 24937, Thallium nitrate. Retrieved March ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallium
Thallium is a chemical element; it has Symbol (chemistry), symbol Tl and atomic number 81. It is a silvery-white post-transition metal that is not found free in nature. When isolated, thallium resembles tin, but discolors when exposed to air. Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently, in 1861, in residues of sulfuric acid production. Both used the newly developed method of flame spectroscopy, in which thallium produces a notable green spectral line. Thallium, from Greek language, Greek , , meaning "green shoot" or "twig", was named by Crookes. It was isolated by both Lamy and Crookes in 1862, Lamy by electrolysis and Crookes by precipitation and melting of the resultant powder. Crookes exhibited it as a powder precipitated by zinc at the 1862 International Exhibition, International Exhibition, which opened on 1 May that year. Thallium tends to form the +3 and +1 oxidation states. The +3 state resembles that of the other elements in Boron Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Compound
A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound. A compound can be transformed into a different substance by a chemical reaction, which may involve interactions with other substances. In this process, bonds between atoms may be broken or new bonds formed or both. There are four major types of compounds, distinguished by how the constituent atoms are bonded together. Molecular compounds are held together by covalent bonds; ionic compounds are held together by ionic bonds; intermetallic compounds are held together by metallic bonds; coordination complexes are held together by coordinate covalent bonds. Non-stoichiometric compounds form a disputed marginal case. A chemical formula specifies the number of atoms of each element in a compound molecule, usin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitrate
Nitrate is a polyatomic ion with the chemical formula . salt (chemistry), Salts containing this ion are called nitrates. Nitrates are common components of fertilizers and explosives. Almost all inorganic nitrates are solubility, soluble in water. An example of an insoluble nitrate is bismuth oxynitrate. Chemical structure The nitrate anion is the conjugate acid, conjugate base of nitric acid, consisting of one central nitrogen atom surrounded by three identically bonded oxygen atoms in a trigonal planar arrangement. The nitrate ion carries a formal charge of −1. This charge results from a combination formal charge in which each of the three oxygens carries a − charge, whereas the nitrogen carries a +1 charge, all these adding up to formal charge of the polyatomic nitrate ion. This arrangement is commonly used as an example of Resonance (chemistry), resonance. Like the isoelectronic carbonate ion, the nitrate ion can be represented by three resonance structures: Che ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallium(I) Iodide
Thallium(I) iodide is a chemical compound with the formula . It is exists as both a solid and high temperature red polymorph. Thallium(I) iodide is one of several water-insoluble metal iodides, along with AgI, CuI, SnI2, SnI4, PbI2, and HgI2. Synthesis and reactions TlI can be formed in aqueous solution by metathesis of soluble thallium salt with iodide ion. Alternatively, it has been prepared from the elements: : An excess of iodine produces thallium(I) triiodide, . Physical properties The room temperature form of TlI is yellow and has an orthorhombic structure which can be considered to be a distorted NaCl structure. The distorted structure is may be caused by favorable thallium-thallium interactions, the closest Tl-Tl distance is 383 pm. At 175 °C the yellow form transforms to a red CsCl form. This phase transition is accompanied by about two orders of magnitude jump in electrical conductivity. The CsI structure can be stabilized down to room temperature by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitric Acid
Nitric acid is an inorganic compound with the formula . It is a highly corrosive mineral acid. The compound is colorless, but samples tend to acquire a yellow cast over time due to decomposition into nitrogen oxide, oxides of nitrogen. Most commercially available nitric acid has a concentration of 68% in water. When the solution contains more than 86% , it is referred to as ''fuming nitric acid''. Depending on the amount of nitrogen dioxide present, fuming nitric acid is further characterized as red fuming nitric acid at concentrations above 86%, or white fuming nitric acid at concentrations above 95%. Nitric acid is the primary reagent used for nitration – the addition of a nitro group, typically to an organic molecule. While some resulting nitro compounds are shock- and thermally-sensitive explosives, a few are stable enough to be used in munitions and demolition, while others are still more stable and used as synthetic dyes and medicines (e.g. metronidazole). Nitric acid is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Talanta
''Talanta'' is a peer-reviewed scientific journal in pure and applied analytical chemistry. It was established in 1958 and is published by Elsevier, with 15 issues per year. In addition to original research articles, ''Talanta'' also publishes review articles and short communications. According to the ''Journal Citation Reports'', it received a 2014 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... of 3.545, ranking it eleventh out of 74 journals in the category "Chemistry, analytical". As of 2023, its impact factor was 5.6.https://jcr.clarivate.com/jcr-jp/journal-profile?journal=TALANTA&year=2023&fromPage=%2Fjcr%2Fhome References Chemistry journals Academic journals established in 1958 English-language journals Elsevier academic journals Journals published b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallium(I) Hydroxide
Thallium(I) hydroxide, also called thallous hydroxide, is a chemical compound with the chemical formula . It is a hydroxide of thallium, with thallium in oxidation state +1. It is a thallium(I) salt of water. It consists of thallium(I) cations and hydroxide anions . Synthesis Thallium(I) hydroxide is obtained from the decomposition of thallium(I) ethoxide in water. : This can also be done by direct reaction of thallium with ethanol and oxygen gas. : Another method is the reaction between thallium(I) sulfate and barium hydroxide. : Properties Thallium(I) hydroxide is a strong base; it dissociates to thallium(I) cations, , and hydroxide anions, , except in strongly basic conditions. cation resembles an alkali metal The alkali metals consist of the chemical elements lithium (Li), sodium (Na), potassium (K),The symbols Na and K for sodium and potassium are derived from their Latin names, ''natrium'' and ''kalium''; these are still the origins of the names ... cati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallium(I) Carbonate
Thallium(I) carbonate is the inorganic compound with the formula Tl2 CO3. It is a white, water-soluble salt. It has no or very few commercial applications. It is produced by treatment of thallous hydroxide with CO2. Safety Like other thallium compounds, it is extremely toxic, with an oral median lethal dose of 21 mg/kg in mice. Due to its toxicity, it is listed in the United States List of Extremely Hazardous Substances This is the list of extremely hazardous substances defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (). The list can be found as an appendix to . Updates as of 2006 can be seen on the Federal Register, (Augu ... as of 2007. References Carbonates Thallium(I) compounds {{inorganic-compound-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallium(III) Nitrate
Thallium(III) nitrate, also known as thallic nitrate, is a thallium compound with chemical formula Tl (NO3)3. Normally found as the trihydrate, it is a colorless and highly toxic salt which hydrolyses in water to thallium(III) oxide. It is a strong oxidizing agent useful in organic synthesis. Preparation The trihydrate is prepared by dissolving thallium(III) oxide in concentrated nitric acid at 80 °C, followed by cooling of the resulting solution: :Tl2O3 + 6 HNO3 → 2 Tl(NO3)3 + 3 H2O Structure Thallium(III) nitrate trihydrate, Tl(NO3)3·3H2O, crystallizes in the hexagonal crystal system and consists of a nine-coordinate thallium center with three bidentate nitrate ligands and three monodentate water ligands. Organic synthesis Despite its toxicity, thallium(III) nitrate is sometimes used in the laboratory, such as in the oxidation of methoxyl phenols to quinone acetals: Another use of thallium(III) nitrate is the oxidization of alkenes to acetals, cyclic alkenes to ring con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallium(I) Compounds
Thallium is a chemical element; it has symbol Tl and atomic number 81. It is a silvery-white post-transition metal that is not found free in nature. When isolated, thallium resembles tin, but discolors when exposed to air. Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently, in 1861, in residues of sulfuric acid production. Both used the newly developed method of flame spectroscopy, in which thallium produces a notable green spectral line. Thallium, from Greek , , meaning "green shoot" or "twig", was named by Crookes. It was isolated by both Lamy and Crookes in 1862, Lamy by electrolysis and Crookes by precipitation and melting of the resultant powder. Crookes exhibited it as a powder precipitated by zinc at the International Exhibition, which opened on 1 May that year. Thallium tends to form the +3 and +1 oxidation states. The +3 state resembles that of the other elements in group 13 (boron, aluminium, gallium, indium). However, the +1 state, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
