Author
S.K. Jain
Bio: S.K. Jain is an academic researcher from Indian Institutes of Technology. The author has contributed to research in topics: Halide & Metal halides. The author has an hindex of 1, co-authored 1 publications receiving 7 citations.
Topics: Halide, Metal halides
Papers
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TL;DR: This article showed that diphenyltelluroxide acts as a ligand with transition metal halides and showed that reactions with some main group halides follow different routes to give dipyltellurium(IV) dihalides.
7 citations
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TL;DR: In this article, the synthesis and reactions of diorganyl derivatives of tellurium(IV) (σ-telluranes of R2TeX2 type) are systematized and generalized.
Abstract: Literature data concerning the synthesis and reactions of diorganyl derivatives of tellurium(IV) (σ-telluranes of R2TeX2 type) are systematized and generalized in this review.
10 citations
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TL;DR: The reaction of 1-naphthyl bromide with n-butyl lithium, elemental tellurium, and 1,4-dibromobutane in THF affords both (C10H7)Te(CH2)4Te(C10 H7) (1) and [(C10h7) Te(CH 2)4]Br (2) in good yields.
Abstract: The reaction of 1-naphthyl bromide with n-butyl lithium, elemental tellurium, and 1,4-dibromobutane in THF affords both (C10H7)Te(CH2)4Te(C10H7) (1) and [(C10H7)Te(CH2)4]Br (2) in good yields. 1 is preferentially formed at low temperatures and is a rare example of a structurally characterized ditelluroether in which the tellurium atoms are bridged by a hydrocarbon chain. In the solid state, 1 shows secondary bonding TeTe interactions, which connect the molecules into layers which are further linked to 3-dimensional frameworks by TeH hydrogen bonds. [(C10H7)Te(CH2)4]Br (2) is formed concurrently during the synthesis of 1 and is the main product, when the reaction is carried out at room temperature. The revPBE/def2-TZVPP calculations of the reaction profiles indicate that the formation of 2 is somewhat more favourable than that of 1. Furthermore, at room temperature the activation energy for the formation of 2 is lower than that of 1. At low temperatures the activation energy of the reaction leading to 1 is lower than that to 2, which is consistent with the synthetic observations. When 1 was treated with CuBr, [Cu2(μ-Br)2{μ-(C10H7)Te(CH2)4Te(C10H7)}2] (3) was formed. It crystallizes as two polymorphs (3a) and (3b) in which both the packing and the conformation of the ditelluroether ligands are different. The reaction of 1 with HgCl2 produces [(C10H7)Te(CH2)4]2[HgCl4]·CH2Cl2 (4·CH2Cl2) and that of 1 with CuCl2 affords [(C10H7)Te(CH2)4]Cl (5). 2 and 5 are isomorphous.
4 citations
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TL;DR: In this article, the synthesis and properties of adducts which form between triphenyltelluronium halides, Ph3TeX, and titanium(IV) halides are described.
Abstract: This paper describes the synthesis and properties of adducts which form between triphenyltelluronium halides, Ph3TeX, and titanium(IV) halides, TiX4 (where X = Cl, Br, I). 1:1, Ph3TeX.TiX4 and 2:1, 2Ph3TeX.TiX4 type products are obtained by reactions of Ph3TeCl and Ph3TeBr with the corresponding titanium tetrahalides. However, Ph3TeI and TiI4 yield only Ph3TeI.TiI4. Conductivity and molecular weight determination are consistent with their dissociation in dilute solution as Ph3Te+ and TiX5 − or Ph3Te+ and TiX6 2− units. Far i.r. spectra reflect the formation of TiX5 − and TiX6 2− species, respectively, for 1:1 and 2:1 adducts. Thus, the formulations of these compounds are given as [Ph3Te]+ [TiX5]−, triphenyltelluronium pentahalotitanate(IV), and [{Ph3Te}+]3, triphenyltelluronium hexahalotitanate(IV).
3 citations
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TL;DR: The chemistry of compounds with carbon-polonium bonds remains, not surprisingly, rather unstudied because of the high level of radioactivity, and hence scarcity, danger and expense, associated with polonium itself as mentioned in this paper.
Abstract: The chemistry of compounds with carbon-polonium bonds remains, not surprisingly, rather unstudied because of the high level of radioactivity, and hence scarcity, danger and expense, associated with polonium itself. Attempts to enlighten this understanding have rarely investigated the same species experimentally and theoretically; the former are emphasized in this chapter. Approaches to the syntheses of dialkyl polonides, aryl polonium derivatives and other types of compounds with carbon-polonium bonds are discussed.
Keywords:
organopolonium compounds;
chronicle;
radioactivity;
dialkyl polonides;
aryl polonium derivatives;
organobismuth compounds;
radioactivity;
polonium and other chalcogens;
chromatography and radiochromatography
2 citations
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TL;DR: In this paper, the synthesis and properties of adducts of triphenyltelluronium halides, Ph3TeX (where X = Cl, Br, I) with tin -tetrachloride, SnCl4.
Abstract: This paper reports the synthesis and properties of adducts of triphenyltelluronium halides, Ph3TeX (where X = Cl, Br, I) with tin -tetrachloride, SnCl4. 1:1, Ph3TeXSnCl4 and 2:1, 2Ph3TeXSnCl4 type products are obtained by reactions of Ph3TeX with SnCl4. Conductivity, molecular weight determinations and 1H n.m.r. data are consistent with dissociation of the adducts in dilute solution as Ph3Te+ and SnCl4X− or Ph3Te+ and SnCl4X2 2− units. The absence of Te-Sn and Te-X vibrations in the far i.r. spectra of these compounds reflects the transfer of a halogen atom from Ph3TeX to SnCl4. Hence, the formulation of these adducts are proposed as [Ph3Te]+ [SnCl5]−; triphenyltelluronium pentachlorostannate (IV); [(Ph3Te)+]2 [SnCl6]2−, triphenyl-telluronium hexachlorostannate(IV); [Ph3 Te]+ [SnCl4Br]−, triphenyltelluronium tetrachlorobromostannate(IV); [(Ph3Te)+] [SnCl4Br2]2− triphenyltelluronium tetrachlorodibromostannate(IV); [Ph3Te]+[SnCl4I]− triphenyltelluronium tetrachloroiodostannate(IV) and [(Ph3 Te)+]2 ...
2 citations