Erbium iodide

CuFeS2 COPPER IRON DISULFIDE 615 Erl3[g] ERBIUM IODIDE (GAS) 659... 

Iodine cleaves one erbium-cyclopentadienyl bond in tricyclopentadienyl erbium with formation of pink dicyclopentadienyl erbium iodide (Maginn et al., 1963), and the tricyclopentadienyl complexes of neodymium and ytterbium are cleaved by hydrogen cyanide with formation of the corresponding dicyclopentadienyl lanthanide cyanide (Kanellakopulos et al., 1974). The colors and some physical data of the cyclopentadienyl rare earth halides and cyanides are given in table 4. 

In aqueous solution, erbium is always trivalent, Er3+. It forms water-insoluble trivalent salts, such as fluoride, ErFs, carbonate, Er2(COs)2, hydroxide, Er(OH)3, phosphate, ErP04, and oxalate Er2(C204)s. It also forms water-soluble salts, chloride, ErCls bromide, ErBrs iodide, Erls sulfate, Er2(S04)s and nitrate, Er(NOs)3. Evaporation of solutions generally yields hydrated salts. 

REDUCTION, REAGENTS Aluminum amalgam. Borane-Dimethyl sulfide. Borane-Tetrahydrofurane. t-Butylaminoborane. /-Butyl-9-borabicyclo[3.3.1]nonane. Cobalt boride— f-Butylamineborane. Diisobutylaluminum hydride. Diisopropylamine-Borane. Diphenylamine-Borane. Diphenyltin dihydride. NB-Enantrane. NB-Enantride. Erbium chloride. Hydrazine, lodotrimethylsilane. Lithium-Ammonia. Lithium aluminum hydride. Lithium borohydride. Lithium bronze. Lithium n-butylborohydride. Lithium 9,9-di-n-butyl-9-borabicyclo[3.3.11nonate. Lithium diisobutyl-f-butylaluminum hydride. Lithium tris[(3-ethyl-3pentylK>xy)aluminum hydride. Nickel-Graphite. Potassium tri-sec-butylborohydride. Samarium(II) iodide. Sodium-Ammonia. Sodium bis(2-mcthoxyethoxy)aluminum hydride. 

IsEr (s) Erls (s) Erbium(lll) Iodide laEr (s) Erls (s)... 

Erbium, thulium, lutetium and yttrium have been separated by application of a rare-earth hexa-antipyrine iodide salt. Other chemicals applied include a sodium rare earth EDTA salt for separating gadolinium, terbium, dysprosium, and yttrium. For these rare earths, a purity of 99% has been reached with this method. 

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