Beyond Classical Coordination Chemistry: The First Case of a Triply Bridging Phosphine Ligand

Andrey Y. Baranov, Elena A. Pritchina, Alexey S. Berezin, Denis G. Samsonenko, Vladimir P. Fedin, Nataliya A. Belogorlova, Nina P. Gritsan, Alexander V. Artem'ev

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The first example of a triply bridging (μ3-P) phosphine ligand has been discovered in the crown-shaped [Cu32-Hal)3L] (Hal=Cl, Br, or I) complexes supported by tris[2-(2-pyridyl)ethyl]phosphine (L). Theoretical analysis completely confirms the observed μ3-P-bridging pattern, revealing the interaction of the same lone pair of phosphorus with three valence 4s-orbitals of Cu atoms. The presented complexes exhibit outstanding blue phosphorescence (λem=442–465 nm) with the quantum efficiency reaching 100 %. The complex [Cu32-I)3L] also exhibits remarkable thermo- and mechanochromic luminescence resulting in a sharp change in the emission colour upon external stimuli. These findings essentially contribute to coordination chemistry of the pnictine ligands.

Original languageEnglish
Pages (from-to)12577-12584
Number of pages8
JournalAngewandte Chemie - International Edition
Volume60
Issue number22
DOIs
Publication statusPublished - 25 May 2021

Keywords

  • coordination modes
  • metal–metal interactions
  • multiple bonds
  • phosphane ligands
  • photophysics

OECD FOS+WOS

  • 2.04 CHEMICAL ENGINEERING
  • 1.04 CHEMICAL SCIENCES
  • 1.04.DY CHEMISTRY, MULTIDISCIPLINARY

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