7803-68-1Relevant articles and documents
Erickson, N. E.,Maddock, A. G.
, (1970)
Gilbertson, L. I.
, p. 1460 - 1460 (1933)
A crystalline, large-pore, microporous semiconductor
Shulman, Alexander,Palmqvist, Anders E. C.
, p. 718 - 722 (2007)
Tubes, dumbbells, and pyramids: A crystalline, large-pore, microporous semiconductor, |Rb18| [Sb36O54][(SbTe 3)2(Te2)6] (Rb-CTH-1), which consists of an 18-ring {Sb18O27} tubular unit surrounded by an intricate, ordered arrangement of trigonal-pyramidal {SbTe 3}3- ions and Te22- dumbbells and lined with Rb+ ions, has been prepared (see picture; turquoise R). This semiconductor has a band gap of approximately 850 meV. (Figure Presented).
Oxidation of tellurium(IV) by tetrabutylammonium tribromide
Kalantre,Gokavi
, p. 2048 - 2050 (2007/10/03)
The reaction between tetrabutylammonium tribromide and tellurium(IV) has been studied in 50% (v/v) acetic acid under second order conditions. The overall order of reaction is found to be two, unity each in both the reactants. The reaction involves a direct two-electron transfer step since the test for the formation of free radicals due to single electron step was negative. The reaction is retarded by hydrogen ions due to protonation prior equilibria of the reductant, tellurium(IV). The active species of the reactants is found to be tribromide ion of the oxidant and HTeO3- of the reductant. Considerable decrease in the entropy of activation of the reaction indicates formation of an ordered transition state between the two reactants analogous to that in alcohol oxidation by tetrabutylammonium tribromide ion.
125Te and 19F NMR spectroscopic study of the hydrolysis of pentafluorotellurium chloride: evidence for trans- and cis-HOTeF4Cl and cis,mer-(HO)2TeF3Cl
Lawlor, Lawrence J.,Martin, Alban,Murchie, Michael P.,Passmore, Jack,Sanders, Jeremy C. P.
, p. 1501 - 1505 (2007/10/02)
The hydrolysis of TeF5Cl has been followed by (125)Te and (19)F NMR spectroscopy.The spectra show that the known series (HO)nTeF(6-n) (n=2-6) are present.In addition the spectra are consistent with the presence of the previously unreported series (HO)nTeF(5-n)Cl (n=1-3) as well as unidentified fluorotellurium(IV) species.Evidence is presented for the new species trans- ans cis-HOTeF4Cl and cis,mer-(HO)2TeF3Cl.The course of the hydrolysis of TeF5Cl is compared with that of SF5Cl. Key words: trans-tetrafluorotellurium hydroxychloride, cis-tetrafluorotellurium hydroxychloride, cis,mer-tetrafluorotellurium dihydroxychloride, pentafluorotellurium chloride, hydrolysis.