Tin IV Iodide

Slisarenko and Ktjdryavtsen Trudy Uzbekskogo Gosudarst. Univ., 

Alphabetical Index of X-ray Diffraction Patterns, American Society for 

Testing Materials, Institute of Physics, and American Society for X-ray and Electron Diffraction, Philadelphia, 1945. 

Submitted by Therald Moeller and Delwin C. Edwards Checked by Robert L. Brandtt and Jacob KxEiNBERGf 

Tin(IV) iodide is a red-orange, crystalline material, which melts at 143.5° and boils at 348° (extrapolated). It begins to sublime at about 180°. The compound is readily soluble in carbon tetrachloride (8.35 g./100 ml. of solution at 22.4° 20.47 g./100 ml. at 50°),6 chloroform (12.32 g./lOO ml. of solution at 28.0°),6 benzene (12.02 g./lOO ml. of solution at 20.2°),6 carbon disulfide, alcohol, and ether. It is completely hydrolyzed by water. The vapor is monomeric and is made up of tetrahedral Snl4 molecules (Sn-I bond distance, 2.65 A). These discrete groups are also found in the solid. The lack of association is indicated by the value of Trouton s constant, 22.1. 

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Give brief experimental details to indicate how you could prepare in the laboratory a sample of either tin(IV) chloride or tin(IV) iodide. How far does the chemistry of the oxides and chlorides of carbon support the statement that the head element of a group in the Periodic Table is not typical of that group (JMB, A)... 

Stannj.. stannic, stanni-. tin(IV). -azetat, n. stannic acetate, tin(IV) acetate, -chlorid, n. stannic chloride, tin(IV) chloride, -chlor-wasserstoffsaure, /. chlorostannic acid, -hydroxyd, n. stannic hydroxide, tin(IV) hydroxide, -jodid, n. stannic iodide, tin (IV) iodide. 

Autocomplex formation of tin (IV) iodide is indicated by the conductometric and spectrophotometric measurements 88h Tin (IV) iodide gives a yellow nonconducting solution in nitrobenzene. The solution turns red upon addition of a donor with strong donors, such as TBP, DMF, DMSO, or HMPA, the color change occurs on addition of the first drop with weak donors considerable amounts may be necessary. The spectra show the presence of hexaiodostannate. At the same time the solution becomes conducting. The comparison of the conductivities at a molar ratio D Snl4 v = 3 shows a relationship to the donicities of the neutral donors in the order... 

The ionization of iron (III) chloride is less readily achieved than that of tin (IV) iodide. Iron (III) chloride gives a nonconducting solution in dichloroethane and... 

Metal Halides. Reacts explosively or violently with the following calcium bromide iron(III) bromide or chloride iron(II) bromide or iodide cobalt(II) chloride silver fluoride all four mercury(II) halides copper(I) chloride, bromide or iodide copper(II) chloride and bromide ammonium tetrachlorocuprate zinc and cadmium chlorides, bromides, and iodides aluminum fluoride, chloride, and bromide thallium bromide tin(II) or (IV) chloride tin(IV) iodide arsenic trichloride and triiodide antimony and bismuth trichlorides, tribromides, and triiodides vanadium(V) chloride chromium(IV) chloride manganese(II) and iron(II) chlorides and nickel chloride, bromide, and iodide.17,22"25... 

Hexachloroethane, removal from zirconium (IV) chloride, 4 124 Hexachloroplumbic(IV) acid, 1 48 Hexaguanidonium tetraphosphate 1-hydrate, 5 97, 100 Hexahalogenoplumbic acids, 1 48 Hexahalogenotellurates(IV), 2 188 Hexaiodostannates(IV), formation of, by tin(IV) iodide, 4 121 Hexametaphosphates (see Metaphosphates)... 

Iodostannates(IV), formation of, by tin (IV) iodide, 4 121 Iron, catalysts for preparation of sodium amide, 2 133... 

Thorium oxybromide, 1 54 Tin, as reducing agent for complex tungsten(VI) chlorides in preparation of complex potassium chlorotungstates(III), 6 149 Tin compounds, halomethyl derivatives, by the diazomethane method, 6 37 (CH8) 2 (CH2C1) SnCl, 6 41 Tin (IV) iodide, 4 119 Titanium, powder by reduction of titanium (IV) oxide with calcium, 6 47... 

SijCH Trisilicon octachloride, 1 44 Snl4 Tin(IV) iodide, 4 119 SrCl2 Strontium chloride, 3 21 SrNOs Strontium nitrate, 3 17 SrS Strontium sulfide, 3 11, 20, 21, 23... 

The synthesis of boron-capped clathrochelate iron(II) tris-dioximates has been realized for wide range of substituents at the boron atom. The attempts to obtain analogous trialkyl- and triaryl-tin-capped iron(II) compounds have not been successful. In the some cases, polymeric clathrochelate compounds have been formed, especially when reactions proceed under basic conditions. With tin(IV) iodide, the primarily formed soluble green complexes also readily transform into polymeric red compounds that are presumably associated with the detachment of iodide ions because of steric hindrance between substituents in dioxime fragments and the bulky iodide atoms of capping groups [70],... 

Tin(IV) iodide reacts with potassamide to give potassium ammonostannate and not an amide or imide,... 

Section 12-4 13. Tin(IV) iodide is prepared by reacting tin with iodine. Write the balanced chemical equation for the reaction. Determine the theoretical yield If a 5.00-g sample of tin reacts in an excess of iodine. Determine the percent yield. If 25.0 g Snl4 was actually recovered. 

In the most often used method the tin(IV) iodide complex is extracted from acid medium ( 4 M H2SO4 or HCIO4) containing iodide, with benzene, toluene, cyclohexane, or n-hexane Sb and In remain in the aqueous phase. The iodide concentration should not be too high, to avoid formation of anionic tin complexes. Chloride and fluoride interfere [1-5]. The method has been used for separation of nanogram quantities of tin from steel and alloys [6]. 

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