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Tellurated heterocycles, 2-[(2-thienyltelluro)methyl]tetrahydrofuran (L-1) and [(2-thienyltelluro)methyl]tetrahydro-2H-pyran (L-2): synthesis and complexation reactions with Pd(II), Pt(II), Hg(II), Ru(II) and Cu(I) single crystal structures of [Ru(p-cymene)Cl-2(L-1)] and cis-[PdCl2(L-2)(2)]

Tellurated heterocycles, 2-[(2-thienyltelluro)methyl]tetrahydrofuran (L-1) and [(2-thienyltelluro)methyl]tetrahydro-2H-pyran (L-2): synthesis and complexation reactions with Pd(II), Pt(II), Hg(II), Ru(II) and Cu(I) single crystal structures of [Ru(p-cymene)Cl-2(L-1)] and cis-[PdCl2(L-2)(2)]
Tellurated heterocycles, 2-[(2-thienyltelluro)methyl]tetrahydrofuran (L-1) and [(2-thienyltelluro)methyl]tetrahydro-2H-pyran (L-2): synthesis and complexation reactions with Pd(II), Pt(II), Hg(II), Ru(II) and Cu(I) single crystal structures of [Ru(p-cymene)Cl-2(L-1)] and cis-[PdCl2(L-2)(2)]
2-Thienyllithium (ThLi) reacts with elemental Te to give ThTeLi which on reaction with tetrahydrofurfurylchloride and 2-(bromomethyl) tetrahydro-2H-pyran at -78 degrees C results in L-1 and L-2. Their complexes [PdCl2(L-1)(2)] (1), [PtCl2(L-1)(2)](2), [HgBr2(L-1)(2)](3), [Ru(p-cym-ene)Cl-2(L-1)] (4), [CuBr(L-1)] (5), [PdCl2(L-2)(2)](6), [PtCl2(L-2)(2)](7), [HgBr2(L-2)(2)](8) and [Ru(p-cymene)Cl-2(L-2)] (9). Both the ligands and all nine complexes have characteristic H-1 and C-13 NMR spectra which reveal that in most of the complexes the two ligands L-1 and L-2 coordinate through Te only. This is corroborated by single crystal structures of 4 and 6. The 4 is a half sandwich compound, in which coligands of p-cymene are Cl and L-1 (monodentate coordinated through Te). The Ru-Te bond length is 2.6340(7) Å. In the 6 Pd has nearly square planar geometry and molecules of ligand L-2 are cis to each other, which is something rare with the monodentate telluride ligands. The Pd-Te bond lengths are 2.538(2) and 2.517(2) Å. The crystal structure of 6 also shows presence of secondary (TeCl)-Cl-. . . interactions in the crystal lattice. The Pd-Pd distance in 6 becomes 3.188(3) Å, less than 3.26 Å (sum of vander Waal's radii). The ligation of L-1 and L-2 is compared with those of related ligands.
2-[(2-thienyltelluro)methyl]tetrahydrofuran, [(2-thienyltelluro)methyl] tetrahydro-2h-pyran, metal complexes, synthesis, single crystal structure, x-ray diffraction n-(2-(4-methoxyphenyltelluro)ethyl)morpholine l-1, organotellurium ligands, ruthenium(ii) complexes, platinum(ii) complexes, x-ray, palladium(ii), chemistry, ligation, diffraction
0022-328X
3788-3796
Bali, Sumit
f8c555fb-0ff1-4986-bbff-8d86ee3fd984
Singh, Ajai K.
28b56ec1-f3bf-4860-ab62-d6aa1eb96f6c
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
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., Drake, J.E., Hursthouse, M.B. and Light, M.E. (2006) Tellurated heterocycles, 2-[(2-thienyltelluro)methyl]tetrahydrofuran (L-1) and [(2-thienyltelluro)methyl]tetrahydro-2H-pyran (L-2): synthesis and complexation reactions with Pd(II), Pt(II), Hg(II), Ru(II) and Cu(I) single crystal structures of [Ru(p-cymene)Cl-2(L-1)] and cis-[PdCl2(L-2)(2)]. Journal of Organometallic Chemistry, 691 (18), 3788-3796. (doi:10.1016/j.jorganchem.2006.05.033).

Record type: Article

Abstract

2-Thienyllithium (ThLi) reacts with elemental Te to give ThTeLi which on reaction with tetrahydrofurfurylchloride and 2-(bromomethyl) tetrahydro-2H-pyran at -78 degrees C results in L-1 and L-2. Their complexes [PdCl2(L-1)(2)] (1), [PtCl2(L-1)(2)](2), [HgBr2(L-1)(2)](3), [Ru(p-cym-ene)Cl-2(L-1)] (4), [CuBr(L-1)] (5), [PdCl2(L-2)(2)](6), [PtCl2(L-2)(2)](7), [HgBr2(L-2)(2)](8) and [Ru(p-cymene)Cl-2(L-2)] (9). Both the ligands and all nine complexes have characteristic H-1 and C-13 NMR spectra which reveal that in most of the complexes the two ligands L-1 and L-2 coordinate through Te only. This is corroborated by single crystal structures of 4 and 6. The 4 is a half sandwich compound, in which coligands of p-cymene are Cl and L-1 (monodentate coordinated through Te). The Ru-Te bond length is 2.6340(7) Å. In the 6 Pd has nearly square planar geometry and molecules of ligand L-2 are cis to each other, which is something rare with the monodentate telluride ligands. The Pd-Te bond lengths are 2.538(2) and 2.517(2) Å. The crystal structure of 6 also shows presence of secondary (TeCl)-Cl-. . . interactions in the crystal lattice. The Pd-Pd distance in 6 becomes 3.188(3) Å, less than 3.26 Å (sum of vander Waal's radii). The ligation of L-1 and L-2 is compared with those of related ligands.

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More information

Published date: 2006
Keywords: 2-[(2-thienyltelluro)methyl]tetrahydrofuran, [(2-thienyltelluro)methyl] tetrahydro-2h-pyran, metal complexes, synthesis, single crystal structure, x-ray diffraction n-(2-(4-methoxyphenyltelluro)ethyl)morpholine l-1, organotellurium ligands, ruthenium(ii) complexes, platinum(ii) complexes, x-ray, palladium(ii), chemistry, ligation, diffraction

Identifiers

Local EPrints ID: 44371
URI: https://eprints.soton.ac.uk/id/eprint/44371
ISSN: 0022-328X
PURE UUID: b047c7be-4036-458f-8a0b-f96d377ddfe7
ORCID for M.E. Light: ORCID iD orcid.org/0000-0002-0585-0843

Catalogue record

Date deposited: 28 Feb 2007
Last modified: 14 Mar 2019 01:48

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