Опубликована статья: Baranov A.Yu., Pritchina E.A., Berezin A.S., Samsonenko D.G., Fedin V.P., Belogorlova N.A., Gritsan N.P., Artem'ev A.V. Beyond classical coordination chemistry: the first case of a triply bridging phosphine ligand // Angewandte Chemie International Edition. – 2021. – V.60. – Iss. 22. – P. 12577-12584. IF 15,336. Q1 25.05.2021. DOI: 10.1002/anie.202103037

Abstract: The first example of a triply bridging (μ3-P) phosphine ligand has been discovered in the crown-shaped [Cu3(μ2-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 [Cu3(μ2-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.

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