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Synthesis and molecular structures of dimeric assemblies of telluronium salts derived from o-C6H4(CH2TeMe)(2) and PhMeTe

Synthesis and molecular structures of dimeric assemblies of telluronium salts derived from o-C6H4(CH2TeMe)(2) and PhMeTe
Synthesis and molecular structures of dimeric assemblies of telluronium salts derived from o-C6H4(CH2TeMe)(2) and PhMeTe
The ditelluroether, o-C6H4(CH2TeMe)(2) reacts with excess MeI in acetone to afford the bis(triorganotelluronium iodide), o-C6H4(CH2TeMe2I)(2), in high yield which has been characterised by H-1-, C-13{H-1}- and Te-125{H-1}-NMR spectroscopy, microanalysis and X-ray crystallography. The crystal structure of this species reveals a weakly associated dimer, assembled through a series of secondary (TeI)-I-... interactions to give a pseudo-cubane Te4I4 core, involving three-coordinate (pyramidal) iodine and six-coordinate (distorted octahedral) tellurium. The o-xylyl backbone units are oriented across the diagonal of two opposite faces of the cubane. This is the first crystallographic study of a triorganotelluronium halide salt derided from a ditelluroether, The crystal structure of PhTeMe2I shows a weakly associated mu(2)-diiodo bridged dimer, in this case with two-coordinate iodine and five-coordinate, distorted square pyramidal tellurium. The stereochemical activity of the Te-based lone pair is discussed for each system and the structures are compared with other related species.
tellurium, telluronium, x-ray structures, secondary interactions, crystal-structures, ligands, complexes, ditelluroether
0022-328X
186-190
Hill, Nicholas J.
c588ad7e-5668-46b9-b84a-791b664f37aa
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Ward, Antony J.
2507b65c-8b65-426d-89ce-ff2ac3768299
Hill, Nicholas J.
c588ad7e-5668-46b9-b84a-791b664f37aa
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Ward, Antony J.
2507b65c-8b65-426d-89ce-ff2ac3768299

Hill, Nicholas J., Levason, William, Reid, Gillian and Ward, Antony J. (2002) Synthesis and molecular structures of dimeric assemblies of telluronium salts derived from o-C6H4(CH2TeMe)(2) and PhMeTe. Journal of Organometallic Chemistry, 642 (1-2), 186-190. (doi:10.1016/S0022-328X(01)01229-3).

Record type: Article

Abstract

The ditelluroether, o-C6H4(CH2TeMe)(2) reacts with excess MeI in acetone to afford the bis(triorganotelluronium iodide), o-C6H4(CH2TeMe2I)(2), in high yield which has been characterised by H-1-, C-13{H-1}- and Te-125{H-1}-NMR spectroscopy, microanalysis and X-ray crystallography. The crystal structure of this species reveals a weakly associated dimer, assembled through a series of secondary (TeI)-I-... interactions to give a pseudo-cubane Te4I4 core, involving three-coordinate (pyramidal) iodine and six-coordinate (distorted octahedral) tellurium. The o-xylyl backbone units are oriented across the diagonal of two opposite faces of the cubane. This is the first crystallographic study of a triorganotelluronium halide salt derided from a ditelluroether, The crystal structure of PhTeMe2I shows a weakly associated mu(2)-diiodo bridged dimer, in this case with two-coordinate iodine and five-coordinate, distorted square pyramidal tellurium. The stereochemical activity of the Te-based lone pair is discussed for each system and the structures are compared with other related species.

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More information

Published date: 18 January 2002
Keywords: tellurium, telluronium, x-ray structures, secondary interactions, crystal-structures, ligands, complexes, ditelluroether

Identifiers

Local EPrints ID: 19778
URI: http://eprints.soton.ac.uk/id/eprint/19778
ISSN: 0022-328X
PURE UUID: c53b9fe1-a7a2-4183-8f6d-7505c0bb78da
ORCID for William Levason: ORCID iD orcid.org/0000-0003-3540-0971
ORCID for Gillian Reid: ORCID iD orcid.org/0000-0001-5349-3468

Catalogue record

Date deposited: 20 Feb 2006
Last modified: 09 Jan 2022 02:43

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Contributors

Author: Nicholas J. Hill
Author: William Levason ORCID iD
Author: Gillian Reid ORCID iD
Author: Antony J. Ward

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