The University of Southampton
University of Southampton Institutional Repository

Synthesis and properties of organometallic Pt-II and Pt-IV complexes with acyclic selenoether and telluroether ligands and selenoether macrocycles

Synthesis and properties of organometallic Pt-II and Pt-IV complexes with acyclic selenoether and telluroether ligands and selenoether macrocycles
Synthesis and properties of organometallic Pt-II and Pt-IV complexes with acyclic selenoether and telluroether ligands and selenoether macrocycles
The first series of planar dimethyl(selenoether)Pt-II complexes, [PtMe2L] [L=MeSe(CH2)(n)SeMe (n=2 or 3), o-C6H4(CH2SeMe)(2), [8]aneSe(2) (1,5-diselenacyclooctane), or [16]aneSe(4) (1, 5,9,13 -tetraselenacyclohexadecane),, have been obtained by treatment of [PtMe2(SMe2)(2)] with L in Et2O solution and characterised by VT H-1, C-13{H-1}, Se-77{H-1} and Pt-195{H-1} NMR spectroscopy, electrospray MS and microanalysis. The corresponding dimethyl(telluroether)Pt-II complexes do not form under similar reaction conditions. The distorted octahedral [PtMe3I(L)] [L=o-C6H4(CH2SeMe)(2), [8]aneSe2, [16]aneSe(4) or MeC(CH2SeMe)(3)] form as stable complexes in good yield from reaction of PtMe3I with L in refluxing CHCl3 and have been characterised similarly. These all show bidentate selenoether coordination, with fast pyramidal inversion occurring at room temperature. The distorted octahedral coordination environment at Pt-IV is also confirmed from a crystal structure of [PtMe3I{o-C6H4(CH2SeMe)(2)}]. Rare examples of (telluroether)Pt-IV complexes, [PtMe3I(o-C6H4(CH2-TeMe)(2)}] and the dinuclear [Me3Pt(mu(2)-I)(2)(mu(2)-MeTeCH2-TeMe)PtMe3], have also been prepared and characterised similarly (and also by Te-125{H-1} NMR spectroscopy). The [8]aneSe(2) and [16]aneSe(4) species are the first examples of alkyl Pt-II or Pt-IV complexes with (macro)cyclic selenoether coordination. Halide abstraction (TIPF6) from [PtMe3I(kappa(2)-[16]aneSe(4))] affords [PtMe3(kappa(3)-[16]aneSe(4))]PF6; a rare example of a cationic Pt-IV selenoether. The (diselenoether)Pt-II complexes undergo oxidative addition of MeI to yield the corresponding Pt-IV species [PtMe3I(diselenoether)].
selenoether, telluroether, platinum, macrocycles, organometallic complexes nuclear-magnetic-resonance, transition-metal-complexes, trimethylplatinum(iv) iodide, structural characterization, ether complexes, co-ligands, selenium, sulfur, ditelluroether, chemistry
1434-1948
4380-4390
Levason, W.
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Manning, J.M.
071c4af0-0d09-422a-8ca3-d5a9454d587a
Pawelzyk, P.
2bfcdd8e-b441-4f54-80ab-98ff86ee15ce
Reid, G.
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Levason, W.
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Manning, J.M.
071c4af0-0d09-422a-8ca3-d5a9454d587a
Pawelzyk, P.
2bfcdd8e-b441-4f54-80ab-98ff86ee15ce
Reid, G.
37d35b11-40ce-48c5-a68e-f6ce04cd4037

Levason, W., Manning, J.M., Pawelzyk, P. and Reid, G. (2006) Synthesis and properties of organometallic Pt-II and Pt-IV complexes with acyclic selenoether and telluroether ligands and selenoether macrocycles. European Journal of Inorganic Chemistry, (21), 4380-4390. (doi:10.1002/ejic.200600509).

Record type: Article

Abstract

The first series of planar dimethyl(selenoether)Pt-II complexes, [PtMe2L] [L=MeSe(CH2)(n)SeMe (n=2 or 3), o-C6H4(CH2SeMe)(2), [8]aneSe(2) (1,5-diselenacyclooctane), or [16]aneSe(4) (1, 5,9,13 -tetraselenacyclohexadecane),, have been obtained by treatment of [PtMe2(SMe2)(2)] with L in Et2O solution and characterised by VT H-1, C-13{H-1}, Se-77{H-1} and Pt-195{H-1} NMR spectroscopy, electrospray MS and microanalysis. The corresponding dimethyl(telluroether)Pt-II complexes do not form under similar reaction conditions. The distorted octahedral [PtMe3I(L)] [L=o-C6H4(CH2SeMe)(2), [8]aneSe2, [16]aneSe(4) or MeC(CH2SeMe)(3)] form as stable complexes in good yield from reaction of PtMe3I with L in refluxing CHCl3 and have been characterised similarly. These all show bidentate selenoether coordination, with fast pyramidal inversion occurring at room temperature. The distorted octahedral coordination environment at Pt-IV is also confirmed from a crystal structure of [PtMe3I{o-C6H4(CH2SeMe)(2)}]. Rare examples of (telluroether)Pt-IV complexes, [PtMe3I(o-C6H4(CH2-TeMe)(2)}] and the dinuclear [Me3Pt(mu(2)-I)(2)(mu(2)-MeTeCH2-TeMe)PtMe3], have also been prepared and characterised similarly (and also by Te-125{H-1} NMR spectroscopy). The [8]aneSe(2) and [16]aneSe(4) species are the first examples of alkyl Pt-II or Pt-IV complexes with (macro)cyclic selenoether coordination. Halide abstraction (TIPF6) from [PtMe3I(kappa(2)-[16]aneSe(4))] affords [PtMe3(kappa(3)-[16]aneSe(4))]PF6; a rare example of a cationic Pt-IV selenoether. The (diselenoether)Pt-II complexes undergo oxidative addition of MeI to yield the corresponding Pt-IV species [PtMe3I(diselenoether)].

This record has no associated files available for download.

More information

Published date: 2006
Keywords: selenoether, telluroether, platinum, macrocycles, organometallic complexes nuclear-magnetic-resonance, transition-metal-complexes, trimethylplatinum(iv) iodide, structural characterization, ether complexes, co-ligands, selenium, sulfur, ditelluroether, chemistry

Identifiers

Local EPrints ID: 44482
URI: http://eprints.soton.ac.uk/id/eprint/44482
ISSN: 1434-1948
PURE UUID: 363b94d6-da74-48c1-9d48-a6e88e949fcc
ORCID for W. Levason: ORCID iD orcid.org/0000-0003-3540-0971
ORCID for G. Reid: ORCID iD orcid.org/0000-0001-5349-3468

Catalogue record

Date deposited: 02 Mar 2007
Last modified: 16 Mar 2024 02:43

Export record

Altmetrics

Contributors

Author: W. Levason ORCID iD
Author: J.M. Manning
Author: P. Pawelzyk
Author: G. Reid ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×