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

Joachim Hedberg Wallenstein (Institutionen för fysik, Kondenserade materiens fysik (Chalmers)) ; Lisa A. Fredin ; Martin Jarenmark ; Maria Abrahamsson (Institutionen för kemi och kemiteknik, Fysikalisk kemi) ; Petter Persson
Dalton Transactions (14779226). Vol. 45 (2016), 29, p. 11723-11732.
[Artikel, refereegranskad vetenskaplig]

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.



Denna post skapades 2016-09-09. Senast ändrad 2016-09-16.
CPL Pubid: 241556

 

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