51786-98-2Relevant academic research and scientific papers
Synthesis, Infrared and X-Ray Studies of Diphenyltellurium(IV) Nitrosocarbamylcyanmethanides. X-Ray Evidence for Stability of a Tritelluroxane Fragment -Ph2Te-O-Ph2Te-O-Ph2Te-
Domasevitch, Konstantin V.,Skopenko, Victor V.,Rusanov, Eduard B.
, p. 832 - 837 (1996)
Diphenyltellurium(IV) derivatives of the types Ph2Te{ACO}2 (1), Ph4Te2O{ACO}2 (2) and Ph6Te3O2{ACO}2 (3) (ACO = nitrosocarbamylcyanmethanide -ONC
Secondary Bonding. Part 8. The Crystal and Molecular Structure of Diphenyl Telluroxide
Alcock, Nathaniel W.,Harrison, W. David
, p. 709 - 712 (1982)
The crystal and molecular structure of diphenyl telluroxide has been determined by X-ray diffraction at room temperature.The crystals are monoclinic, space group Cc, with a = 31.310(12), b = 5.629(1), c = 18.025(6) Angstroem, β = 139.18(1) deg, U = 2 076.
SOLUTION STUDIES OF TRIORGANOTELLURONIUM SALTS
Dance, Nigel S.,Mcwhinnie, William R.,Mallaki, Jahangir,Monsef-Mirzai, Zahra
, p. 131 - 144 (1980)
Evidence for telluronium ylid formation via the salt method is obtained for Ph2Te(CH2COPh)Br, but generally telluronium salts (aryl)2Te(CH2R)X rapidly dissociate in chloroform solution to (aryl)2Te and RCH2X.The relative rates of dissociation of Ph2(CH3)TeX in CHCl3 are: X=I > Br ca.NCS > Cl > PhCOO.Conductivity and 1H NMR data suggest the salts Ph2(CH3)TeX to be covalent and at least dimeric in CHCl3, but more ionic in DMSO and, to a lesser extent, DMF.IR data indicate association in solid Ph2(CH3)TeI.Kinetic data show that the reaction of CH3I with excess Ph2Te (solvent) affords an equilibrium mixture of ionic and covalent forms of Ph2(CH3)TeI, the ionic species being formed via the covalent one.Spin trapping experiments with phenyl(t-butyl)nitrone indicate that oxidative addition of alkyl halides to Ph2Te and reductive elimination of CH3SCN from Ph2(CH3)Te(NCS) proceed via radical pathways.A mechanism is proposed for oxidative addition which involves the preformation of a charge transfer complex of RX (alkyl halide) and diphenyltelluride.
The highly selective metal-free oxidation of sulfides, tellurides and phosphines using sodium bromate in the presence of recyclable ionic liquid [bmim]HSO4, at 80°C
Rajeswari,Lumb, Anshika,Khurana, Jitender M.
, p. 442 - 444 (2016/07/21)
The metal-free oxidation of sulfides to sulfones using sodium bromate (NaBrO3) in [bmim]HSO4:H2O (3:1, v/v) at 80°C is reported. Phenylalkyl, phenylbenzyl, diaryl and heteroaryl sulfides were transformed to the corresponding sulfones. Aryl tellurides and phosphines were oxidised to the corresponding telluroxides and phosphine oxides. All the reactions proceeded smoothly and gave high yields in 20-55 min. The ionic liquid [bmim]HSO4 was easily recovered and recycled.
Photosensitized oxygenation of diaryl tellurides to telluroxides and their oxidizing properties
Oba, Makoto,Endo, Masaki,Nishiyama, Kozaburo,Ouchi, Akihiko,Ando, Wataru
, p. 1672 - 1673 (2007/10/03)
Photosensitized oxidation of tellurides carrying bulky aromatic substituents afforded the corresponding telluroxides which were found to react with simple alcohols to give the corresponding carbonyl compounds in excellent yields along with the starting tellurides.
Diorganotellurium(IV) bis(fluorocarboxylates)
Srivastava, Sanjay Kumar,Srivastava, T. N.,Singh, Jai Deo,Srivastava, Arun K.,Kumar, P.
, p. 103 - 108 (2007/10/03)
Diorganotellurium(IV) bis(fluorocarboxylates) have been prepared by the interaction of R2Te(OMe)2 with fluorocarboxylic acids (R'COOH).Identical products were obtained by the metathetical reaction of R2TeCl2 with silver salts of the fluorocarboxylic acids in 1 : 2 molar ratios.However, when the reaction proceeded in a 1 : 1 molar ratio, the product was R2TeCl(OCOR').However, reaction of R2TeO with CF3COOH yielded 2*H2O> and species.The products are non-conducting and monomeric in solution.The mode of bonding of the fluorocarboxylate group and a possible geometry around the central tellurium atom are suggested on the basis of physicochemical and spectral (IR, mass, 1H, 13C, 19F and 125Te NMR) studies.
A Mechanism for the Oxidation of Glutathione to Glutathione Disulfide with Organotellurium(IV) and Organoselenium(IV) Compounds. A Stepwise Process with Implications for Photodynamic Therapy and Other Oxidative Chemotherapy
Detty, Michael R.,Friedman, Alan E.,Oseroff, Alan R.
, p. 8245 - 8250 (2007/10/02)
The reactions of telluroxides or their hydrates 3-5 with glutathione to give telluropyrylium dyes 1,2 or diphenyl telluride, respectively, and glutathione disulfide have at least two discrete steps.A fast reaction, which is first-order in both substrate and glutathione, is observed with second-order rate constants of 2.30E7 L mol-1 s-1 at 285.4 K for 3, 1.66E7 L mol-1 s-1 at 293.2 K for 4, and 5.2E6 L mol-1 s-1 at 285.5 K for 5.This reaction is followed by a slower reaction, which is first-order in both substrate and glutathione, with second-order rate constants of 2.65E5 L mol-1 s-1 at 293.5 K for 3, 3.34E5 L mol-1 s-1 at 293.2 K for 4, and 7.64E3 L mol-1 s-1 at 285.5 K for 5.The slow reaction is accompanied by the generation of the corresponding tellurium(II) compound.Diphenyl selenoxide hydrate (6) displays similar behavior, although the rate constants associated with the fast (2.26E2 L mol-1 s-1) and slow (6.62E1 L mol-1 s-1) reactions are many orders-of-magnitude less than observed for the tellurium analogues.
Triphenyltellurium(IV) dithiocarbamates, xanthates, and dithiophosphates
Singh, A. K.,Basumatary, J. K.
, p. 73 - 78 (2007/10/02)
Ph3TeCl reacts with a molar equivalent of a sodium dithiocarbamate, xanthate, or dithiophosphate (S-SNa) to give Ph3Te(S-S) type derivatives.Molecular weight and conductivity measurements in solution suggest that these new triphenyltelluronium compounds a
SYNTHESIS, STRUCTURE, AND PROPERTIES OF COMPOUNDS WITH A CHALOGEN-NITROGEN-BOND. XII. SYNTHESIS OF N-SULFONYLTELLURIMIDES BY THE REACTION OF TELLURIDES WITH SODIUM SALTS OF N-CHLOROSULFONAMIDES
Naddaka, V. I.,Avanesyan, K. V.,Cherkinskaya, M. L.
, p. 328 - 332 (2007/10/02)
Two methods are developed for the production of N-sulfonyldiaryltellurimides based on the reaction of tellurides with chloramines B and T.Unlike diaryl tellurides, aryl methyl tellurides give stable monohydrates of the tellurimides in this reaction.
Diorganotellurium(IV) Bis(dimethylglyoximates)
Srivastava, T. N.,Singh, Jai Deo,Srivastava, S.
, p. 519 - 520 (2007/10/02)
Some diorganotellurium(IV) bis(dimethylglyoximates) of the formula R2Te(DMG)2 have been prepared and characterised.The complexes undergo substitution when reacted with haloacetic acids or
