Issue 41, 2012
From the journal:

Dalton Transactions

Synthesis and characterisation of cobalt(ii) phosphonate cage complexes utilizing carboxylates and pyridonates as co-ligands†

Stuart K. Langley,a   Madeleine Helliwell,a   Simon J. Teatb  and  Richard E. P. Winpenny*ac  

* Corresponding authors

a School of Chemistry, The University of Manchester, Oxford Road, Manchester, UK
E-mail: richard.winpenny@man.ac.uk

b Advanced Light Source, Lawrence Berkeley Laboratory, 1 Cyclotron Road, MS2-400, Berkeley, California 94720, USA

c The Photon Science Institute, The University of Manchester, Oxford Road, Manchester, UK

Abstract

The synthesis and structures of fifteen new cobalt complexes containing phosphonate ligands are reported. The compounds also utilize carboxylates and 6-chloro-2-pyridonate (chp) as co-ligands. The majority of the compounds are decametallic: [Co10(chp)12(O3PPh)2(O2CPh)4(H2O)4], [Co10(chp)12(O3PPh)2(O2CtBu)4(H2O)4], [Co10(chp)12(O3PPh)2(O2CPhtBu)4(H2O)4], [Co10(chp)6(O3PCH2Ph)2(O2CPh)8(F)2 (H2O)2(EtOAc)2], [Co10(chp)8(O3PCH2Ph)2(O2CPh)8(F)2(MeCN)2](HNEt3)2, [Co10(chp)6(O3PCH2Ph)2(O2CtBu)8(F)2(H2O)2(MeCOMe)2], [Co10(chp)6(O3PMe)2 (O2CtBu)8(F)2(MeCN)4], [Co10(chp)6(O3PEt)2(O2CPh)8(F)2(MeCN)4], [Co10(chp)6(O3POct)2(O2CPh)8(F)2(MeCN)4], [Co10(chp)8(Hchp)2(O3PCH2Nap) (O2CPh)7(OH)3(H2O)], [Co10(chp)12(O3PPh)2(O2CPh-2-Ph)4(H2O)4] and [Co10(chp)12(O3PMe)2(O2CPh-2-Ph)4(H2O)4]. Two nine-metal cages and one hexametallic cage are also reported: [Co9(chp)9(O3PtBu)(O2CtBu)6(OH)], [Co9(chp)7(O3PCH2Ph)2(O3PCH2Ph)(O2CCPh3)5(OH)(H2O)2(MeCN)] and [Co6(chp)6(Hchp)2(O3PtBu)(O2CPh-2-Ph)3(F)(H2O)](HNEt3)(Cl). Magnetic studies show predominantly anti-ferromagnetic exchange interactions between the cobalt(II) sites, with diamagnetic ground states for most of the compounds studied.

Graphical abstract: Synthesis and characterisation of cobalt(ii) phosphonate cage complexes utilizing carboxylates and pyridonates as co-ligands

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C2DT31612A
Article type
Paper
Submitted
19 Jul 2012
Accepted
29 Aug 2012
First published
29 Aug 2012

Dalton Trans., 2012,41, 12807-12817

Permissions

Request permissions

Synthesis and characterisation of cobalt(II) phosphonate cage complexes utilizing carboxylates and pyridonates as co-ligands

S. K. Langley, M. Helliwell, S. J. Teat and R. E. P. Winpenny, Dalton Trans., 2012, 41, 12807 DOI: 10.1039/C2DT31612A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements