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Abstract <p>The reactions of bis(2-pyridyl)-<i>tert-</i>butylphosphine (L<sup>1</sup>) and bis(<i>tert-</i>butyl)(2-pyridyl)phosphine (L<sup>2</sup>) with copper(II) thiocyanate afford the corresponding binuclear complexes [Cu<sub>2</sub>(SCN)<sub>2</sub>(L<sup>1</sup>)<sub>2</sub>] (<b>I</b>) and&#xa0;[Cu<sub>2</sub>(SCN)<sub>2</sub>(L<sup>2</sup>)<sub>2</sub>] (<b>II</b>). In complex <b>I</b>, two L<sup>1</sup> molecules are coordinated to the copper atoms via the&#xa0;P,N,N′-bridging mode according to the “head-to-tail” type, and the SCN ligands are coordinated via the N-monodentate mode. In complex <b>II</b>, molecules of ligand L<sup>2</sup> are coordinated via the P-monodentate mode, and the SCN ligands bind two copper atoms between each other via the “head-to-tail” type thus acting as S,N-bridges. Complex <b>I</b> exhibits pronounced photoluminescence thermochromism.</p>

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Copper(I) Thiocyanate Complexes with tert-Butylpyridylphosphine Ligands: Synthesis and Photophysical Properties

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • A. Yu. Baranov,
  • I. Yu. Bagryanskaya,
  • A. V. Artem’ev

摘要

Abstract

The reactions of bis(2-pyridyl)-tert-butylphosphine (L1) and bis(tert-butyl)(2-pyridyl)phosphine (L2) with copper(II) thiocyanate afford the corresponding binuclear complexes [Cu2(SCN)2(L1)2] (I) and [Cu2(SCN)2(L2)2] (II). In complex I, two L1 molecules are coordinated to the copper atoms via the P,N,N′-bridging mode according to the “head-to-tail” type, and the SCN ligands are coordinated via the N-monodentate mode. In complex II, molecules of ligand L2 are coordinated via the P-monodentate mode, and the SCN ligands bind two copper atoms between each other via the “head-to-tail” type thus acting as S,N-bridges. Complex I exhibits pronounced photoluminescence thermochromism.