Linked Life Data

20449160

Source:http://linkedlifedata.com/resource/pubmed/id/20449160

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
35
pubmed:dateCreated
2010-5-7
pubmed:abstractText
Main-chain organometallic polymers were synthesized from bimetallic iron(ii) complexes containing a ditopic N-heterocyclic carbene (NHC) ligand [(cp)(CO)LFe(NHC approximately NHC)Fe(cp)(CO)L]X(2) (where NHC approximately NHC represents a bridging dicarbene ligand, L = I(-) or CO). Addition of a diimine ligand such as pyrazine or 4,4'-bipyridine, interconnected these bimetallic complexes and gave the corresponding co-polymers containing iron centers that are alternately linked by a dicarbene and a diimine ligand. Diimine coordination depended on the wingtip groups at the carbene ligands and was accomplished either by photolytic activation of a carbonyl ligand from the cationic [Fe(cp)(NHC)(CO)(2)](+) precursor (alkyl wingtips) or by AgBF(4)-mediated halide abstraction from the neutral complex [FeI(cp)(NHC)(CO)] (mesityl wingtips). Remarkably, the polymeric materials were substantially more stable than the related bimetallic model complexes. Electrochemical analyses indicated metal-metal interactions in the pyrazine-containing polymers, whereas in 4,4'-bipyridine-linked systems the metal centers were electronically decoupled.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1477-9234
pubmed:author
pubmed:issnType
Electronic
pubmed:day
21
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
7168-78
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Main-chain organometallic polymers comprising redox-active iron(II) centers connected by ditopic N-heterocyclic carbenes.
pubmed:affiliation
Department of Chemistry, University of Fribourg, Chemin du Musee 9, CH-1700 Fribourg, Switzerland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't