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<p>A novel NHC-mercury(II) transmetallating reagent [Hg(<b>L</b>)<sub>2</sub>][BF<sub>4</sub>]<sub>2</sub> (<b>3</b>), obtained from the proligand <b>L·HBF</b><sub><b>4</b></sub> (<b>1</b>), lead upon reaction with [Pt(Cl)<sub>2</sub>(cod)] to a novel platinum(II) diplatinamacrocycle of molecular formulae {[Pt(Cl)(<b>L</b>)][BF<sub>4</sub>]}<sub>2</sub> (<b>4</b>) which structure was ascertained by single-crystal X-ray diffraction analysis. Oxidative addition of the C-H bond of the benzimidazolium moiety of the proligand <b>L·HBF</b><sub><b>4</b></sub> (<b>1</b>) to [Pt(PPh<sub>3</sub>)<sub>4</sub>] occurs upon heating. As a result, a mononuclear platinum(II) hydride complex formulated as <i>trans</i>-[Pt(H)<b>(L</b>)(PPh<sub>3</sub>)<sub>2</sub>]BF<sub>4</sub> <b>(5</b>) could be characterized but the hydride ligand proved easy to hydrolyse.</p>

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Platinum(II) complexes with a dipyridyl-benzimidazolylidene ligand: synthesis and structure of a diplatinamacrocycle featuring intramolecular Pt(II)···Pt(II) and π–π interactions

  • 期刊论文

  • 发表日期：

    2026年3月3日

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  • Jamal Moussa,
  • Lise-Marie Chamoreau

摘要

A novel NHC-mercury(II) transmetallating reagent [Hg(L)2][BF4]2 (3), obtained from the proligand L·HBF4 (1), lead upon reaction with [Pt(Cl)2(cod)] to a novel platinum(II) diplatinamacrocycle of molecular formulae {[Pt(Cl)(L)][BF4]}2 (4) which structure was ascertained by single-crystal X-ray diffraction analysis. Oxidative addition of the C-H bond of the benzimidazolium moiety of the proligand L·HBF4 (1) to [Pt(PPh3)4] occurs upon heating. As a result, a mononuclear platinum(II) hydride complex formulated as trans-[Pt(H)(L)(PPh3)2]BF4 (5) could be characterized but the hydride ligand proved easy to hydrolyse.