Iodine formulas

Ary] 2-amino-5-(p-aminophenyl)thia2oles of the general formula 116 were prepared by condensing phenylthiosemicarbazides (115) with either w-bromoacetophenone by refluxing in alcohol for 2 hr (Method A) or with acetophenones and iodine on a steam bath for 8 hr (Method B) Scheme 53 (517), with R = para Me, MeO, Cl, Br, I, NOj, NHj, Ph ortho Me, NOjl or meta Br, I, NO. Yields ranged from 55 to 90% from Method A and 40 to 70% from Method B. 

Polyhahde compounds are formed between iodine or iodine haUdes and other haUde salts. The formulas of some of these compounds are Rbl ... 

Iodine reacts with sulfuryl chloride ia the presence of aluminum chloride as catalyst-forming iodine chlorides. Sulfuryl chloride reacts with anhydrous ammonia yielding a series of sulfamides of the general formula NH2S02(NHS02) NH2, where n > 0. A cycHc compound of the formula... 

Bi,Sr,CaCu,03 g + (2y-12)T 2BF++ 2Sr -"+ Ca -"+ 2CuI + yO -+ (y-7)I, In this ease the exeess of aside solution and potassium iodide solution are added to analyzing eompound with eontinuous stirring. The generated iodine is titrated by Na3S,03 solution. The ealeulation of oxygen index (y) is eaiTying out by formula ... 

Chemical Designations - Synonyms Cuprous Iodine Marshite Chemical Formula Cul. Ohservahle Characteristics - Pfo .rfca/State (as normally shipped) Solid Color Beige Odor. None. Physical and Chemical Properties - Physical State at 15 and I atm. Solid Molecular Weight 190.4 Boiling Point at I atm. 2,354, 1,290, 1,563 Freezing Point 1,121, 605, 878 Critical Temperature Not pertinent Critical Pressure Not pertinent Specific Gravity 5.62 at 20°C (solid) Vapor (Gas) Density Not pertinent Rtuio cf Specific Heats of Vapor (Gas) Not pertinent Latent Heat of Vaporization Not pertinent Heat cf Combustion Not pertinent Heat cf Decomposition Not pertinent. 

When distilled with phosphorus pentoxide, camphor yields cymene, and with iodine, carvacrol. Both of these bodies are para-derivatives of benzene. On oxidation with nitric acid camphor yields many acids, of which the chief are camphoric acid, CjgHjgO, camphanic acid, CjoHj O, and camphoronic acid, CgHj Og. The constitution of these acids has an important bearing on that of camphor. Many formulae have been suggested for camphor during the past few years, but that of Bredt is now universally accepted, and has received complete confirmation by Komppa s synthesis of camphoric acid. This synthesis confirms the formula for camphoric acid as—... 

Chemical Name 1 -Ethenyl-2-pyrrolidinone homopolymer compound with iodine Common Name PVP-I Structural Formula ... 

This may be illustrated by the following example. Suppose that 50 mL of water containing 0.1 g of iodine are shaken with 25 mL of carbon tetrachloride. The distribution coefficient of iodine between water and carbon tetrachloride at the ordinary laboratory temperature is 1 /85, i.e. at equilibrium the iodine concentration in the aqueous layer is 1 /85th of that in the carbon tetrachloride layer. The weight of iodine remaining in the aqueous layer after one extraction with 25 mL, and also after three extractions with 8.33 mL of the solvent, can be calculated by application of the above formula. In the first case, if x, g of iodine remains in the 50 mL of water, its concentration is x,/50 gmL 1 the concentration in the carbon tetrachloride layer will be (0.1 —x1)/25gmL 1. 

Heating the white reaction product to 140 C for one hour in vacuum caused a visible iodine evolution and approximately 40% weight loss. No further weight loss was observed up to 250°C. The gaseous products from the pyrolysis were not collected. The green product from pyrolysis analyzed Pu, 43 3% I, 50 2% C, 4.9 1%. The empirical formula PuI2C2H3 has the calculated composition Pu, 45.88% I, 48.75% C, 4.79%. 

C.7 State whether each of the following elements is more likely to form a cation or an anion, and write the formula for the ion most likely to be formed (a) cesium (b) iodine (c) selenium ... 

M.12 A compound produced as a by-product in an industrial synthesis of polymers was found to contain carbon, hydrogen, and iodine. A combustion analysis of 1.70 g of the compound produced 1.32 g of C02 and 0.631 g of H20. The mass percentage of iodine in the compound was determined by-converting the iodine in a 0.850-g sample of the compound into 2.31 g of lead(II) iodide. What is the empirical formula of the compound Could the compound also contain oxygen Explain your answer. 

Using Lewis structures and VSEPR, give the VSEPR formula for each of the following species and predict its shape (a) sulfur tetrachloride (b) iodine trichloride (c) 1F4 ... 

The interhalogen IFT can be made only by indirect routes. For example, xenon difluoride gas can react with iodine gas to produce 1FV and xenon gas. In one experiment xenon difluoride is introduced into a rigid container until a pressure of 3.6 atm is reached. Iodine vapor is then introduced until the total pressure is 7.2 atm. Reaction is then allowed to proceed at constant temperature until completion by solidifying the IF as it is produced. The final pressure in the flask due to the xenon and excess iodine vapor is 6.0 atm. (a) What is the formula of the mterhalogen (b) Write the chemical equation for its formation. 

The carbonyl halides have the general formula Mx(C0)yX2 with X being fluorine, chlorine, bromine, or iodine. With the notable exception of nickel, most metals form carbonyl halides including all the metals listed in Table 3.4. 

The first column of the periodic table, Group 1, contains elements that are soft, shiny solids. These alkali metals include lithium, sodium, potassium, mbidium, and cesium. At the other end of the table, fluorine, chlorine, bromine, iodine, and astatine appear in the next-to-last column. These are the halogens, or Group 17 elements. These four elements exist as diatomic molecules, so their formulas have the form X2 A sample of chlorine appears in Figure EV. Each alkali metal combines with any of the halogens in a 1 1 ratio to form a white crystalline solid. The general formula of these compounds s, AX, where A represents the alkali metal and X represents the halogen A X = N a C 1, LiBr, CsBr, KI, etc.). 

C03-0017. Write correct molecular formulas for aluminum oxide, potassium dichromate, lead(II) nitrate, nitrogen dioxide, sodium sulfate, iodine pentafluoride, manganese(II) acetate, and sodium hypochlorite.. 

C03-0109. The following pairs of substances are quite different despite having similar names. Write correct formulas for each, (a) sodium nitrite and sodium nitrate (b) potassium carbonate and potassium hydrogen carbonate (c) iron(II) oxide and iron(IIt) oxide and (d) iodine and iodide ion. 

C03-0144. The thyroid gland produces hormones that help regulate body temperature, metabolic rate, reproduction, the synthesis of red blod cells, and more. Iodine must be present in the diet for these thyroid hormones to be produced. Iodine deficiency leads to sluggishness and weight gain, and can cause severe problems in the development of a fetus. One thyroid hormone is thyroxine, whose chemical formula is... 

We focused our attention on Tall oil, a by-product of the paper industry, whenever this is prepared according to the KRAFT process. Said material consists of a mixture of highly unsaturated fatty acids (many of which with conjugated diene systems) and terpene derived rosin acids. The rosin acids have the molecular formula C20H30O2 and thus belong to the diterpenes (pimaric and abietic acids). Tall Oil has an iodine number equal to approximately 170 gl2/100 g. 

Write a formula for each of the following compounds ( ) phosphorus pentasullide, (6) iodine hcptalluo-ride, and (c) nitrogen dioxide. 

Abstract This presentation is a brief review on the resnlts of our work on iodine interaction with thioamides, selenoamides and amides. The thioamides, benzothia-zole-2-thione (BZT) (1), 6-n-propyl-2-thiouracil (PTU) (2), 5-chloro-2-mercap-tobenzothiazole (CMBZT) (3), N-methyl-benzothiazole-2-thione (NMBZT) (4), benzimidazole-2-thione (BZIM) (5), thiazolidine-2-thione (TZD) (6), 2-mercapto-pyridine (PYSH) (7), 2-mercapto-nicotinic acid (MNA) (8), 2-mercapto-benzoic acid (MBA) (9) and 2-mercapto-pyrimidine (PMT) (10) react with producing three type of complexes of formulae [(HL)IJ(l2) (HL= thioamide and n= 0, 1), [(HL) [I3 ] and [(HL-L)]+[l3 ]. The interaction of seleno-amides, derived from, 6-n-propyl-2-thiouracil (RSelJ) (R= Me- (11), Et- (12), n-Pr- (13) and i-Pr- (14)) with I, have also been studied and produced the complexes [(RSeU)IJ of spoke structure. These complexes are stable in non-polar solvents, but they decompose in polar solvents, producing dimeric diselenide compounds or undertake deselenation. 

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