Tris iodide, 1-hydrate

Hydrated Vanadium Tri-iodide, VT3.6H20, is prepared by reducing, electrolytically, a solution of vanadium pentoxide, V2Os, in hydriodic add, until the product becomes green more hydriodic add is then added and the whole allowed to stand over lime and concentrated sulphuric add at 0° C. Small green needles separate, which have the same crystalline form as the hydrated trivalent halides of titanium, iron, and chromium. These crystals are extremely hygroscopic and deliquesce in air to a brown liquid8 which is extremely unstable. 

Dimethylformamide (99.8%), 2-methylpropanethiol (99%), triphenylphosphine (99%), and triphenylphosphite (99- -%) were purchased from Aldrich and used as received. Rhodium trichloride hydrate was a generous loan from Engelhard-CLAL, and iridium iodide was purchased from Johnson Matthey as a mixture of M3 and M4 of several formula M3 4. The trisodium salt of tris(3-sulfonatophe-nyl)phospine (TPPTS) was a gift from Hoechst. 

Both dextro- and levo-tris (ethylenediamine) cobalt (III) iodide monohydrate crystallize in deep orange needles or rhombs. The racemic phase which separates as the 1-hydrate is much less soluble in water. Racemization ensues... 

Tris (ethylenediamine) chromium-(III) iodide, 1-hydrate, 2 199 Tris (ethylenediamine) chromium-(III) sulfate, 2 198 Tris (ethylenediamine) chromium-(III) thiocyanate, 1-hydrate, 2 199... 

Barium iodate 1-hydrate, synthesis 4 Indium(I) bromide, synthesis 6 Hexachlorodisiloxane, synthesis 7 Trichlorosilanethiol, synthesis 8 Tris(acetylacetonato)silicon chloride, synthesis 9 Titanium(III)chloride, synthesis 11 Bis[tris(acetylacetonato)titanium(IV)] hexachloro-titanate(IV), synthesis 12 Zirconium(IV) iodide, synthesis 13 (Triphenyl) aminophosphonium chloride, synthesis 19 (Dimethylamido)phosphoryl dichloride, synthesis 20 Bis(dimethylamido)phosphoryl chloride, synthesis 21 Trimeric and tetrameric phosphonitrilic bromides, synthesis 23 Phosphorus(V) chloride-boron trichloride complex, synthesis 24... 

Methylbromoarsines, synthesis 26 Vanadium(III) fluoride, synthesis 27 Sulfur(IV) fluoride, synthesis 33 Peroxydisulfuryl difluoride, synthesis 34 Trichloro(tripyridine)chromium(III), synthesis 36 Tris(3-bromoacetylacetonato)chromium(III), synthesis 37 Trichloro(tripyridine)molybdenum(III), synthesis 39 Uranyl chloride 1-hydrate, synthesis 41 Rhenium(III) iodide, synthesis 50 Potassium hexachlororhenate(IV) and potassium hexa-bromorhenate(IV), synthesis 51 Iron-labeled cyclopentadienyl iron complexes, synthesis 54 Inner complexes of cobalt(III) with diethylenetriamine, synthesis 56... 

Reaction of 6-methoxy-l-tetralone (30) with methylmagnesium iodide gave the dihydronaphthalene (31) in high yield (Scheme 4). However, the transformation of 31 to the tetralone 33, via perbenzoic acid epoxidation followed by acid workup, was capricious and resulted in low yields. A better route was developed, involving hydroboration (hydrogen peroxide oxidation) to the alcohol 32, followed by Pfitzner-Moffatt oxidation to the tetralone 33 in an overall yield of 61%. Other oxidation methods were tried but with varied and poor results. Alkylation of the tetralone 33 with 3-bromopropyne yielded 34, which underwent hydration [mercury (II) acetate in acetic acid-formic acid] to the diketone (35). The enone (36) obtained by base catalyzed cyclization was ster-eospecifically reduced with lithium aluminum hydride to the allylic alcohol... 

Hydrazobenzenes with a chalcogenophosphoryl group were prepared by the reduction of 2-iodoazobenzene with hydrazine hydrate followed by a Pd(ii)-cata-lyzed cross-coupling with diphenylphosphine. The P(in) function was subsequently oxidised by hydrogen peroxide, sulfur and selenixun (Scheme 22) It was possible to restore the azobenzene structure by oxidation. The radical phosphination of aryl iodides by chlorodiphenylphosphine in the presence of tris(trimethylsilyl)silane, 1,1 -azobis(cyclohexane-l-carbonitrile) (V-40) and pyridine led to aryldiphenylphos-phines that were converted to the P-sulfides (Scheme 23). ... 

Solubility of compounds Salts of lanthemides are generally hydrated. Their solubility follows the pattern of solubility of salts of group II A elements. Chlorides, bromides, iodides, nitrates, acetates, perchlorates and bromates are generdly water soluble while fluorides, hydroxides, oxides and salts of most di-and tri-negative anions (e,g. COl", CrOf", PO, 204 are generedly insoluble. The sulphates are, however, soluble unlike group II. 

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