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Solvent dependent anion dissociation limits copper( i ) catalysed atom transfer reactions

Overview of attention for article published in Dalton Transactions: An International Journal of Inorganic Chemistry, July 2013
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Title
Solvent dependent anion dissociation limits copper( i ) catalysed atom transfer reactions
Published in
Dalton Transactions: An International Journal of Inorganic Chemistry, July 2013
DOI 10.1039/c3dt51100f
Pubmed ID
Authors

Timothy J. Zerk, Paul V. Bernhardt

Abstract

Atom transfer radical addition (ATRA) and polymerisation (ATRP) reactions are commonly catalyzed by copper(I) complexes which react, reversibly, with a dormant alkyl halide initiator (RX) releasing a reactive organic radical R˙. The copper catalyst bears a multidentate N-donor ligand (L) and the active catalyst is simply Cu(I)L. The role of the catalyst in these reactions is to abstract a halogen atom from RX forming the corresponding higher oxidation state species Cu(II)LX. However, in order to perform its catalytic function (in multiple turnovers) the halido ligand must be released from the copper ion en route to regenerating the active catalyst Cu(I)L. In this work we investigate the kinetics of the Cu(I)LX/Cu(I)L equilibrium where L is the tridentate N,N,N',N'',N''-pentamethyl-diethylenetriamine (PMDETA). Using electrochemical analysis we find that the rate of formation of the active catalyst Cu(I)L is strongly dependent on solvent. We demonstrate that both the kinetics and thermodynamics of this simple ligand exchange reaction are critical in the overall reaction pathway.

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Mendeley readers

The data shown below were compiled from readership statistics for 33 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Spain 1 3%
Unknown 32 97%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 11 33%
Student > Master 5 15%
Student > Bachelor 4 12%
Student > Postgraduate 3 9%
Researcher 2 6%
Other 2 6%
Unknown 6 18%
Readers by discipline Count As %
Chemistry 20 61%
Biochemistry, Genetics and Molecular Biology 2 6%
Agricultural and Biological Sciences 1 3%
Chemical Engineering 1 3%
Materials Science 1 3%
Other 1 3%
Unknown 7 21%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 June 2013.
All research outputs
#23,109,385
of 25,756,911 outputs
Outputs from Dalton Transactions: An International Journal of Inorganic Chemistry
#12,535
of 21,221 outputs
Outputs of similar age
#184,440
of 207,328 outputs
Outputs of similar age from Dalton Transactions: An International Journal of Inorganic Chemistry
#113
of 320 outputs
Altmetric has tracked 25,756,911 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 21,221 research outputs from this source. They receive a mean Attention Score of 1.8. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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We're also able to compare this research output to 320 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.