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Tellurium polymeric cations

Polyatomic Chalcogen Polymers and Polymeric Tellurium Cations... [Pg.403]

The eight-atom systems provide a compelling illustration of the structural diversity of tellurium polycations. There are examples of (a) structural isomers of the monomeric dication Tcg, (b) a polymeric (Teg ) cation and (c) a tetracation Teg" . Unlike cyclo-Sg and -Seg , the Teg dication cannot be made by oxidising tellurium with MF5 (M = As or Sb) in liquid SO2. However, the reactions of (a) the tellurium subhalide Te3Cl2 with ReC at 200 °C and (b) tellurium with WCl6 at 180°C produce the salts Teg[MCl6] (w=l, M = Re ... [Pg.291]

Pentacarbonyliron is involved in the conversion of the [Tc4] into the polymeric [Tey] cation (Equation (5)). The fate of the iron carbonyl was not clear however, evidence suggested the formation of iron carbonyl-tellurium cations in solution. [Pg.6]

Tellurium tetrachloride as a catalyst for cationic oligo- and polymerization reactions... [Pg.341]

Tellurium tetrachloride, a source of TeClj ions, behaves as a cationic catalyst for oligo-and polymerization reactions. Two types of monomer, phenyl-substituted ethylenes and benzyl chlorides, have been submitted to these reactions. ... [Pg.341]

Tellurium forms the most extensive series of homoatomic chalcogen cations. The list of structurally characterised tellurium polycations includes Te4, 6, Te6, Teg and Teg and also the polymeric species (Te4 ) ,... [Pg.290]

Figure 10 (a) The cation-anion interactions in (Te4)[WCl6]2 Tellurium atoms are indicated in grey, chlorine in white, and tungsten in dark grey, (b) The polymeric cation in (Te4)(Teio)[Bi2Cl8l (c) The Teg + cation in (Te8)[VOCl4]2 ... [Pg.4789]

See other pages where Tellurium polymeric cations is mentioned: [Pg.238]    [Pg.291]    [Pg.238]    [Pg.291]    [Pg.261]    [Pg.290]    [Pg.290]    [Pg.4790]    [Pg.4789]    [Pg.242]    [Pg.973]    [Pg.472]    [Pg.240]    [Pg.243]    [Pg.333]    [Pg.292]    [Pg.103]    [Pg.149]    [Pg.641]    [Pg.31]    [Pg.512]    [Pg.472]    [Pg.164]    [Pg.82]    [Pg.512]   
See also in sourсe #XX -- [ Pg.238 ]



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Polyatomic Chalcogen Polymers and Polymeric Tellurium Cations

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