A theoretical study on PdII complexes containing hemilabile pyrazole-derived ligands

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Abstract

The properties of PdII complexes containing hemilabile pyrazole-derived ligands (L) of the form BPz-(CH2) x-A(CH2)yA(CH2)x-PzB, with A being a donor atom and B a substituent group at the pyrazole ring, have been investigated through quantum-chemical calculations. The geometries of the [PdLCl2] and [PdL]2+ complexes have been optimized and the reaction free energy of [PdLCl2] → [PdL]2+ + 2 Cl- computed for 32 different ligands, using the hybrid B3LYP density functional method. The formation of the tetra-coordinate [PdL]2+ complexes is more favorable for the longer (eight- and nine-membered) chains than for the shorter (six- and seven-membered) ones. Moreover, results show the nature of the donor atom A influences significantly the formation of [PdL] 2+, the process becoming more favorable according to the order PH > NH > S > O. Finally, electron-donor substituents at the pyrazole ring enhance the formation of [PdL]2+, whereas electron-acceptor groups hinder the process. © Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
Original languageEnglish
Pages (from-to)447-454
JournalEuropean Journal of Inorganic Chemistry
Issue number2
DOIs
Publication statusPublished - 23 Jan 2006

Keywords

  • Density functional theory
  • Hemilabile ligands
  • Pd complexes II
  • Pyrazole

Fingerprint Dive into the research topics of 'A theoretical study on Pd<sup>II</sup> complexes containing hemilabile pyrazole-derived ligands'. Together they form a unique fingerprint.

  • Cite this