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| Title: | Reactions of hybrid organotellurium ligands 1-(4-methoxyphenyl telluro)-2-[3-(6-methyl-2-pyridyl)propoxy]ethane (L1) and 1-ethylthio-2-[2-thienyltelluro]ethane (L2) with mercury (II) bromide: formation of complexes and their decomposition |
| Authors: | Singh, Garima
Bali, Sumit
Singh, Ajai K
Drake, John E
Macdonald, Charles L B
Hursthouse, M B
Little, M E |
| Keywords: | Tellurium ligands
1-(4-Methoxyphenyltelluro)-2-[3-(6-methyl-2-pyridyl)propoxy]ethane
1-Ethylthio-2-[2-thienyltelluro]ethane
Mercury complexes
Decomposition
Crystal structures |
| Issue Date: | 2005 |
| Citation: | Inorganica Chimica Acta, 358(4), 912-918 |
| Abstract: | Two tellurium ligands 1-(4-methoxyphenyltelluro)-2-[3-(6-methyl-2-pyridyl)propoxy]ethane (L1) and 1-ethylthio-2-[2-thienyltelluro]ethane (L2) have been synthesized by reacting nucleophiles [4-MeO–C6H4Te−] and [C4H3S-2-Te−] with 2-[3-(6-methyl-2-pyridyl)propoxy]ethylchloride and chloroethyl ethyl sulfide, respectively. Both the ligands react with HgBr2 resulting in complexes of stoichiometry [HgBr2 · L1/L2] (1/4), which show characteristic NMR (1H and 13C 1H ). On crystallization of 1 from acetone–hexane (2:1) mixture, the cleavage of L1 occurs resulting in 4-MeOC6H4HgBr (2) and [RTe+→HgBr2]Br− (3) (where R = –CH2CH2OCH2CH2CH2-(2-(6-CH3–C5H3N))). The 2 is characterized by X-ray diffraction on its single crystal. It is a linear molecule and is the first such system which is fully characterized structurally. The Hg–C and Hg–Br bond lengths are 2.085(6) and2.4700(7) . The distance of four bromine atoms (3.4041(7)–3.546(7) ) around Hg (cis to C) is greater than the sum of van der Waal’s rad... |
| URI: | http://eprint.iitd.ac.in/dspace/handle/2074/1507 |
| Appears in Collections: | Chemistry
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