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2- 2-(4-Methoxyphenyltelluro)ethyl thiophene (L-1) bis 2-(2-thienyl)ethyl telluride (L-2) and their metal complexes; crystal structure of trans-dichlorobis{2-(2-(4-methoxyphenyltelluro)ethyl) thiophene-Te}palladium(II) and {bis 2-(2-thienyl)ethyll telluride} dichloro(p-cymene)ruthenium(II)

2- 2-(4-Methoxyphenyltelluro)ethyl thiophene (L-1) bis 2-(2-thienyl)ethyl telluride (L-2) and their metal complexes; crystal structure of trans-dichlorobis{2-(2-(4-methoxyphenyltelluro)ethyl) thiophene-Te}palladium(II) and {bis 2-(2-thienyl)ethyll telluride} dichloro(p-cymene)ruthenium(II)
2- 2-(4-Methoxyphenyltelluro)ethyl thiophene (L-1) bis 2-(2-thienyl)ethyl telluride (L-2) and their metal complexes; crystal structure of trans-dichlorobis{2-(2-(4-methoxyphenyltelluro)ethyl) thiophene-Te}palladium(II) and {bis 2-(2-thienyl)ethyll telluride} dichloro(p-cymene)ruthenium(II)
The reaction of ArTe- (Ar = 4-MeOC6H4) and Te2- generated in situ by borohydride reduction of Ar2Te2 and Te, respectively, with 2-(2-thienyl)ethyl chloride has resulted in 2-[2-(4-methoxyphenyltelluro)ethyl]thiophene (L-1) and bis[2-(2-thienyl)ethyl] telluride (L-2), respectively. Their complexes [AgNO3(L-1)] (1) [PdCl2(L-1)(2)] (2) [PtCl2(L-1)(2)] (3) [HgBr2(L-1)](2) (4) [Ru(p-cymene)Cl-2(L-1)] (5) [Ru(p-cymene)Cl-2(L-2)] (6) and [PdCl2(L-2)(2)] have been synthesized. The ligands and complexes exhibit characteristic H-1 and C-13{H-1} NMR spectra. Both the ligands coordinate only through Te in all the complexes. The single crystals of 2 and 6 are characterized by X-ray diffraction. Compound 2 has square planar geometry around Pd and trans arrangement of ligands. The Pd-Te bond distances 2.5951(7) and 2.5872(7) Angstrom are longer than the values expected due to strong trans influence. The unique intermolecular secondary Te...Cl interaction (distance = 3.450/3.449 Angstrom) between neighbouring molecules has been observed in the crystal structure of 2. The distance between Pd atoms of two neighbouring molecules 3.2143(10) Angstrom has also been found less than the sum of van der Waal's radii 3.26 Angstrom. These secondary interactions in 2 result in the formation of a dimeric species, which remains intact even in the solution. Compound 6 is a half sandwich having three coordination sites occupied by two Cl atoms and the Te atom of L-2 with Ru-Te bond distance of 2.6528(9) Angstrom and Ru-Cl, 2.415(2)/2.422(2) Angstrom.
2-[2-(4-methoxyphenyltelluro)ethyl]thiophene, bis[2-(2-thienyl)ethyl] telluride, organotellurium ligands, metal complexes, synthesis, crystalstructureruthenium(ii) complexes, thio-ether, chemistry, ligation, palladium(ii), ru(ii), iodine
0022-328X
2346-2353
Bali, Sumit
f8c555fb-0ff1-4986-bbff-8d86ee3fd984
Singh, Ajai K.
28b56ec1-f3bf-4860-ab62-d6aa1eb96f6c
Sharma, Pankaj
e4f35325-c78f-4b49-ba42-f4f3ec1dde5d
Toscano, R.A.
bdffef10-cee8-43e3-a8c9-0a957f637215
Drake, J.E.
cf5a2c45-a2cb-4361-8b31-f2295e2050b7
Hursthouse, M.B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Light, M.E.
cf57314e-6856-491b-a8d2-2dffc452e161
Bali, Sumit
f8c555fb-0ff1-4986-bbff-8d86ee3fd984
Singh, Ajai K.
28b56ec1-f3bf-4860-ab62-d6aa1eb96f6c
Sharma, Pankaj
e4f35325-c78f-4b49-ba42-f4f3ec1dde5d
Toscano, R.A.
bdffef10-cee8-43e3-a8c9-0a957f637215
Drake, J.E.
cf5a2c45-a2cb-4361-8b31-f2295e2050b7
Hursthouse, M.B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Light, M.E.
cf57314e-6856-491b-a8d2-2dffc452e161

Bali, Sumit, Singh, Ajai K., Sharma, Pankaj, Toscano, R.A., Drake, J.E., Hursthouse, M.B. and Light, M.E. (2004) 2- 2-(4-Methoxyphenyltelluro)ethyl thiophene (L-1) bis 2-(2-thienyl)ethyl telluride (L-2) and their metal complexes; crystal structure of trans-dichlorobis{2-(2-(4-methoxyphenyltelluro)ethyl) thiophene-Te}palladium(II) and {bis 2-(2-thienyl)ethyll telluride} dichloro(p-cymene)ruthenium(II). Journal of Organometallic Chemistry, 689 (14), 2346-2353. (doi:10.1016/j.jorganchem.2004.04.023).

Record type: Article

Abstract

The reaction of ArTe- (Ar = 4-MeOC6H4) and Te2- generated in situ by borohydride reduction of Ar2Te2 and Te, respectively, with 2-(2-thienyl)ethyl chloride has resulted in 2-[2-(4-methoxyphenyltelluro)ethyl]thiophene (L-1) and bis[2-(2-thienyl)ethyl] telluride (L-2), respectively. Their complexes [AgNO3(L-1)] (1) [PdCl2(L-1)(2)] (2) [PtCl2(L-1)(2)] (3) [HgBr2(L-1)](2) (4) [Ru(p-cymene)Cl-2(L-1)] (5) [Ru(p-cymene)Cl-2(L-2)] (6) and [PdCl2(L-2)(2)] have been synthesized. The ligands and complexes exhibit characteristic H-1 and C-13{H-1} NMR spectra. Both the ligands coordinate only through Te in all the complexes. The single crystals of 2 and 6 are characterized by X-ray diffraction. Compound 2 has square planar geometry around Pd and trans arrangement of ligands. The Pd-Te bond distances 2.5951(7) and 2.5872(7) Angstrom are longer than the values expected due to strong trans influence. The unique intermolecular secondary Te...Cl interaction (distance = 3.450/3.449 Angstrom) between neighbouring molecules has been observed in the crystal structure of 2. The distance between Pd atoms of two neighbouring molecules 3.2143(10) Angstrom has also been found less than the sum of van der Waal's radii 3.26 Angstrom. These secondary interactions in 2 result in the formation of a dimeric species, which remains intact even in the solution. Compound 6 is a half sandwich having three coordination sites occupied by two Cl atoms and the Te atom of L-2 with Ru-Te bond distance of 2.6528(9) Angstrom and Ru-Cl, 2.415(2)/2.422(2) Angstrom.

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More information

Published date: 15 July 2004
Keywords: 2-[2-(4-methoxyphenyltelluro)ethyl]thiophene, bis[2-(2-thienyl)ethyl] telluride, organotellurium ligands, metal complexes, synthesis, crystalstructureruthenium(ii) complexes, thio-ether, chemistry, ligation, palladium(ii), ru(ii), iodine

Identifiers

Local EPrints ID: 20123
URI: http://eprints.soton.ac.uk/id/eprint/20123
ISSN: 0022-328X
PURE UUID: f7b1ed1f-8b1c-4b6f-860c-e7f9f52bf78f
ORCID for M.E. Light: ORCID iD orcid.org/0000-0002-0585-0843

Catalogue record

Date deposited: 23 Feb 2006
Last modified: 18 Feb 2021 16:52

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