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Chemical consequences of pyrazole orientation in RuII complexes of unsymmetric quinoline-pyrazole ligands

Hedberg Wallenstein, Joachim; Fredin, Lisa A. LU ; Jarenmark, Martin LU ; Abrahamsson, Maria and Persson, Petter LU (2016) In Dalton Transactions 45(29). p.11723-11732
Abstract

A series of homoleptic RuII complexes including the tris-bidentate complexes of a new bidentate ligand 8-(1-pyrazol)-quinoline (Q1Pz) and bidentate 8-(3-pyrazol)-quinoline (Q3PzH), as well as the bis-tridentate complex of bis(quinolinyl)-1,3-pyrazole (DQPz) was studied. Together these complexes explore the orientation of the pyrazole relative to the quinoline. By examining the complexes structurally, photophysically, photochemically, electrochemically, and computationally by DFT and TD-DFT, it is shown that the pyrazole orientation has a significant influence on key properties. In particular, its orientation has noticeable effects on oxidation and reduction potentials, photostability and proton sensitivity, indicating that... (More)

A series of homoleptic RuII complexes including the tris-bidentate complexes of a new bidentate ligand 8-(1-pyrazol)-quinoline (Q1Pz) and bidentate 8-(3-pyrazol)-quinoline (Q3PzH), as well as the bis-tridentate complex of bis(quinolinyl)-1,3-pyrazole (DQPz) was studied. Together these complexes explore the orientation of the pyrazole relative to the quinoline. By examining the complexes structurally, photophysically, photochemically, electrochemically, and computationally by DFT and TD-DFT, it is shown that the pyrazole orientation has a significant influence on key properties. In particular, its orientation has noticeable effects on oxidation and reduction potentials, photostability and proton sensitivity, indicating that [Ru(Q3PzH)3]2+ is a particularly good local environment acidity-probe candidate. copy; The Royal Society of Chemistry 2016.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Dalton Transactions
volume
45
issue
29
pages
10 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:84978977380
  • wos:000380344900018
ISSN
1477-9226
DOI
10.1039/c6dt01070a
language
English
LU publication?
yes
id
079bd075-23ab-4251-960f-71c7111b582a
date added to LUP
2017-02-17 08:19:00
date last changed
2017-09-18 11:33:15
@article{079bd075-23ab-4251-960f-71c7111b582a,
  abstract     = {<p>A series of homoleptic Ru<sup>II</sup> complexes including the tris-bidentate complexes of a new bidentate ligand 8-(1-pyrazol)-quinoline (Q1Pz) and bidentate 8-(3-pyrazol)-quinoline (Q3PzH), as well as the bis-tridentate complex of bis(quinolinyl)-1,3-pyrazole (DQPz) was studied. Together these complexes explore the orientation of the pyrazole relative to the quinoline. By examining the complexes structurally, photophysically, photochemically, electrochemically, and computationally by DFT and TD-DFT, it is shown that the pyrazole orientation has a significant influence on key properties. In particular, its orientation has noticeable effects on oxidation and reduction potentials, photostability and proton sensitivity, indicating that [Ru(Q3PzH)<sub>3</sub>]<sup>2+</sup> is a particularly good local environment acidity-probe candidate. copy; The Royal Society of Chemistry 2016.</p>},
  author       = {Hedberg Wallenstein, Joachim and Fredin, Lisa A. and Jarenmark, Martin and Abrahamsson, Maria and Persson, Petter},
  issn         = {1477-9226},
  language     = {eng},
  number       = {29},
  pages        = {11723--11732},
  publisher    = {Royal Society of Chemistry},
  series       = {Dalton Transactions},
  title        = {Chemical consequences of pyrazole orientation in Ru<sup>II</sup> complexes of unsymmetric quinoline-pyrazole ligands},
  url          = {http://dx.doi.org/10.1039/c6dt01070a},
  volume       = {45},
  year         = {2016},
}