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1-ethylthio-2-[2-thienyltelluro]ethane (L) a new (Te, S) ligand: synthesis and complexation with Ag(I), Cu(I), Pd(II) and Pt(II) - single crystal structures of [PdCl2(L)] and bis(thienyl) tellurium(IV) chloride

1-ethylthio-2-[2-thienyltelluro]ethane (L) a new (Te, S) ligand: synthesis and complexation with Ag(I), Cu(I), Pd(II) and Pt(II) - single crystal structures of [PdCl2(L)] and bis(thienyl) tellurium(IV) chloride
1-ethylthio-2-[2-thienyltelluro]ethane (L) a new (Te, S) ligand: synthesis and complexation with Ag(I), Cu(I), Pd(II) and Pt(II) - single crystal structures of [PdCl2(L)] and bis(thienyl) tellurium(IV) chloride
Lithium 2-thienyltellurolate, generated from 2-thienyl lithium, reacts at -78 degrees C in THF with chloroethyl ethyl sulfide to give a (Te, S) ligand 1-ethylthio-2-[2-thienyltelluro]ethane (L) as a red oil. The complexes [PdCl2(L)] (1), [PtCl2(L)] (2), [Ag(L)(2)][ClO4] (3) and [CuBr(L)](2) (4) were synthesized. The complex [HgCl2(L)] on crystallization decomposed giving Th2TeCl2 (5) [where Th = 2-thienyl], which was characterized by X-ray diffraction on its single crystals. The ligand L and complexes 1-4 exhibit proton and carbon-13 NMR spectra, which are characteristic. The coordination through Te in 1-4 is indicated by downfield coordination shifts in the position of the TeCH2 signal of L. Complex I was characterized by X-ray diffraction on its single crystals. The geometry around Pd is square planar. The Pd-Te, Pd-S and Pd-Cl bond lengths are 2.5040(4), 2.273(1) and 2.322(1)/2.380(1) angstrom, respectively. There are intermolecular interactions between Te (coordinated to Pd) and Cl, and sulfur and Cl. The Te-Cl and S-Cl distances, 3.401 and 3.488 Å, respectively, are shorter than the sum of the van der Waal's radii (3.81 and 3.55 Å, respectively). The Pd-Pd distance between the two molecules is 3.4156(6) Å, greater than the sum of van der Waal's radii (3.26 Å). The structure of 5 is typical of that of a tellurium(IV) compound (saw-horse type). The two Te-Cl bond lengths are identical, 2.480(1) Å. The geometry around Te in 5 can be best described as pseudo tetrahedral (trigonal bipyramidal with a lone pair on one corner of the triangle).
1-ethylthio-2-[2-thienyltelluro]ethane, metal complexes-, palladium, platinum, silver, copper, synthesis, characterization, single crystal structure, bis(thienyl)tellurium(iv) chloride organotellurium ligands, thio-ether, x-ray, palladium(ii), chemistry, mercury(ii), donor, platinum(ii), diffraction, ligation
0277-5387
3481-3487
Singh, Garima
968f9825-9305-4532-8f2c-98118db57dc4
Singh, Ajai K.
28b56ec1-f3bf-4860-ab62-d6aa1eb96f6c
Drake, John E.
6de1350f-4eb6-4ca7-b796-947f4fec467d
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
Singh, Garima
968f9825-9305-4532-8f2c-98118db57dc4
Singh, Ajai K.
28b56ec1-f3bf-4860-ab62-d6aa1eb96f6c
Drake, John E.
6de1350f-4eb6-4ca7-b796-947f4fec467d
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161

Singh, Garima, Singh, Ajai K., Drake, John E., Hursthouse, Michael B. and Light, Mark E. (2006) 1-ethylthio-2-[2-thienyltelluro]ethane (L) a new (Te, S) ligand: synthesis and complexation with Ag(I), Cu(I), Pd(II) and Pt(II) - single crystal structures of [PdCl2(L)] and bis(thienyl) tellurium(IV) chloride. Polyhedron, 25 (18), 3481-3487. (doi:10.1016/j.poly.2006.06.042).

Record type: Article

Abstract

Lithium 2-thienyltellurolate, generated from 2-thienyl lithium, reacts at -78 degrees C in THF with chloroethyl ethyl sulfide to give a (Te, S) ligand 1-ethylthio-2-[2-thienyltelluro]ethane (L) as a red oil. The complexes [PdCl2(L)] (1), [PtCl2(L)] (2), [Ag(L)(2)][ClO4] (3) and [CuBr(L)](2) (4) were synthesized. The complex [HgCl2(L)] on crystallization decomposed giving Th2TeCl2 (5) [where Th = 2-thienyl], which was characterized by X-ray diffraction on its single crystals. The ligand L and complexes 1-4 exhibit proton and carbon-13 NMR spectra, which are characteristic. The coordination through Te in 1-4 is indicated by downfield coordination shifts in the position of the TeCH2 signal of L. Complex I was characterized by X-ray diffraction on its single crystals. The geometry around Pd is square planar. The Pd-Te, Pd-S and Pd-Cl bond lengths are 2.5040(4), 2.273(1) and 2.322(1)/2.380(1) angstrom, respectively. There are intermolecular interactions between Te (coordinated to Pd) and Cl, and sulfur and Cl. The Te-Cl and S-Cl distances, 3.401 and 3.488 Å, respectively, are shorter than the sum of the van der Waal's radii (3.81 and 3.55 Å, respectively). The Pd-Pd distance between the two molecules is 3.4156(6) Å, greater than the sum of van der Waal's radii (3.26 Å). The structure of 5 is typical of that of a tellurium(IV) compound (saw-horse type). The two Te-Cl bond lengths are identical, 2.480(1) Å. The geometry around Te in 5 can be best described as pseudo tetrahedral (trigonal bipyramidal with a lone pair on one corner of the triangle).

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More information

Published date: 2006
Keywords: 1-ethylthio-2-[2-thienyltelluro]ethane, metal complexes-, palladium, platinum, silver, copper, synthesis, characterization, single crystal structure, bis(thienyl)tellurium(iv) chloride organotellurium ligands, thio-ether, x-ray, palladium(ii), chemistry, mercury(ii), donor, platinum(ii), diffraction, ligation

Identifiers

Local EPrints ID: 44597
URI: http://eprints.soton.ac.uk/id/eprint/44597
ISSN: 0277-5387
PURE UUID: 6fcf6b35-8b0d-4cc1-94db-630a76ed3615
ORCID for Mark E. Light: ORCID iD orcid.org/0000-0002-0585-0843

Catalogue record

Date deposited: 01 Mar 2007
Last modified: 03 Dec 2019 01:55

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