The University of Southampton
University of Southampton Institutional Repository

Iron(III)-pivalate-based complexes with tetranuclear {Fe4(?3-O)2}8+ cores and n-donor ligands: formation of cluster and polymeric architectures

Iron(III)-pivalate-based complexes with tetranuclear {Fe4(?3-O)2}8+ cores and n-donor ligands: formation of cluster and polymeric architectures
Iron(III)-pivalate-based complexes with tetranuclear {Fe4(?3-O)2}8+ cores and n-donor ligands: formation of cluster and polymeric architectures
Different synthetic routes have been used for the preparation of a new tetranuclear [Fe4O2(O2CCMe3)(8)(bpm)] cluster (1) and a one-dimensional coordination polymer [Fe4O2-(O2CCMe3)(8)(hmta)](n) (2) (bpm = 2,2'-bipyrimidine and hmta = hexamethylenetetramine). For cluster 1, two structural isomers, 1a and 1b center dot 3MeCN, have been found. X-ray crystallographic analysis showed that all complexes consist of a central {Fe-4(mu(3)-O)(2)}(8+) core. In 1a, metal ions in the core are additionally linked by six bridging pivalates as two other pivalates and a bpm ligand are chelated to Fe-III ions, whereas in cluster 1b, metal ions in the {Fe-4(mu(3)-O)(2)}(8+) core are linked by seven bridging pivalates and only one carboxylate as well as bpm are chelated to the iron centers. In coordination polymer 2, [Fe4O2(O2CCMe3)(8)] clusters are bridged by hmta ligands to form zigzag chains. Magnetic measurements have been carried out to characterize these complexes and revealed antiferromagnetic interactions between Fe-III ions with best-fit parameters of J(wb) = -72.2 (1a) and -88.7 cm(-1) (1b) for wing...body interactions.
coordination polymers, iron, carboxylate ligands, n ligands, magnetic properties
1434-1948
356-367
Baca, Svetlana G.
bf5b0d5c-2e00-49c2-bfcc-05743a0d638d
Filippova, Irina G.
f8480f08-d405-4189-8e43-8e60b320d47b
Keene, Tony D.
fb859c26-6a1d-4c43-a15f-f329bc8d34d7
Botezat, Olga
d53f5e05-b533-4515-8486-e98e64ec739e
Malaestean, Iurii L.
9051302d-c49e-4d14-8edc-20617a418369
Stoeckli-Evans, Helen
0dca7568-de3d-4c81-a345-3de78a2d6c8d
Kravtsov, Victor Ch.
da0db5bf-8dca-4014-817b-38408adbe77f
Chumacov, Iurii
a3eee0ee-c6f5-493e-bbe1-d90dc9bf295d
Liu, Shi-Xia
546635e3-8931-436e-8456-298ac2a3134d
Decurtins, Silvio
331985a5-2121-47e4-a4b2-2fd09f8cabfd
Baca, Svetlana G.
bf5b0d5c-2e00-49c2-bfcc-05743a0d638d
Filippova, Irina G.
f8480f08-d405-4189-8e43-8e60b320d47b
Keene, Tony D.
fb859c26-6a1d-4c43-a15f-f329bc8d34d7
Botezat, Olga
d53f5e05-b533-4515-8486-e98e64ec739e
Malaestean, Iurii L.
9051302d-c49e-4d14-8edc-20617a418369
Stoeckli-Evans, Helen
0dca7568-de3d-4c81-a345-3de78a2d6c8d
Kravtsov, Victor Ch.
da0db5bf-8dca-4014-817b-38408adbe77f
Chumacov, Iurii
a3eee0ee-c6f5-493e-bbe1-d90dc9bf295d
Liu, Shi-Xia
546635e3-8931-436e-8456-298ac2a3134d
Decurtins, Silvio
331985a5-2121-47e4-a4b2-2fd09f8cabfd

Baca, Svetlana G., Filippova, Irina G., Keene, Tony D., Botezat, Olga, Malaestean, Iurii L., Stoeckli-Evans, Helen, Kravtsov, Victor Ch., Chumacov, Iurii, Liu, Shi-Xia and Decurtins, Silvio (2011) Iron(III)-pivalate-based complexes with tetranuclear {Fe4(?3-O)2}8+ cores and n-donor ligands: formation of cluster and polymeric architectures. European Journal of Inorganic Chemistry, 2011 (3), 356-367. (doi:10.1002/ejic.201000838).

Record type: Article

Abstract

Different synthetic routes have been used for the preparation of a new tetranuclear [Fe4O2(O2CCMe3)(8)(bpm)] cluster (1) and a one-dimensional coordination polymer [Fe4O2-(O2CCMe3)(8)(hmta)](n) (2) (bpm = 2,2'-bipyrimidine and hmta = hexamethylenetetramine). For cluster 1, two structural isomers, 1a and 1b center dot 3MeCN, have been found. X-ray crystallographic analysis showed that all complexes consist of a central {Fe-4(mu(3)-O)(2)}(8+) core. In 1a, metal ions in the core are additionally linked by six bridging pivalates as two other pivalates and a bpm ligand are chelated to Fe-III ions, whereas in cluster 1b, metal ions in the {Fe-4(mu(3)-O)(2)}(8+) core are linked by seven bridging pivalates and only one carboxylate as well as bpm are chelated to the iron centers. In coordination polymer 2, [Fe4O2(O2CCMe3)(8)] clusters are bridged by hmta ligands to form zigzag chains. Magnetic measurements have been carried out to characterize these complexes and revealed antiferromagnetic interactions between Fe-III ions with best-fit parameters of J(wb) = -72.2 (1a) and -88.7 cm(-1) (1b) for wing...body interactions.

Full text not available from this repository.

More information

e-pub ahead of print date: 9 December 2010
Published date: January 2011
Keywords: coordination polymers, iron, carboxylate ligands, n ligands, magnetic properties
Organisations: Organic Chemistry: Synthesis, Catalysis and Flow, Chemistry, Faculty of Natural and Environmental Sciences

Identifiers

Local EPrints ID: 351384
URI: https://eprints.soton.ac.uk/id/eprint/351384
ISSN: 1434-1948
PURE UUID: 97790b8c-b4f0-4c9f-aea3-0a291b68616c
ORCID for Tony D. Keene: ORCID iD orcid.org/0000-0003-2297-4327

Catalogue record

Date deposited: 22 Apr 2013 09:49
Last modified: 20 Jul 2019 00:39

Export record

Altmetrics

Contributors

Author: Svetlana G. Baca
Author: Irina G. Filippova
Author: Tony D. Keene ORCID iD
Author: Olga Botezat
Author: Iurii L. Malaestean
Author: Helen Stoeckli-Evans
Author: Victor Ch. Kravtsov
Author: Iurii Chumacov
Author: Shi-Xia Liu
Author: Silvio Decurtins

University divisions

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 https://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.

×