Reactivity of tethered bis-cyclopentadienyl-supported diruthenium polyhydride complexes.

Authors

Po-Sen Huang, Kuheli Das, Wei-Chen Fu, Yu-Hong Chen, Yu-Chun Hung, Ting-Yi Chu, Pei-Lin Chen, I-Chung Lu, Hsueh-Ju Liu

Published in

Dalton transactions (Cambridge, England : 2003). Aug 03, 2026. Epub Aug 03, 2026.

Abstract

Bimetallic ruthenium hydride complexes are important platforms for probing metal-metal cooperation and hydride-centered reactivity. Herein, we report diruthenium polyhydride complexes supported by tethered bis-cyclopentadienyl ligand L and their reactivity. The dichloride precursor LRu₂(μ-Cl)₂ (1) reacts with LiB^sBu₃H to afford the lithium-stabilized diruthenium trihydride complex LRu₂(μ-H)₃Li(THF) (2), which is subsequently converted to the neutral tetrahydride LRu₂(μ-H)₄ (3) upon protonation. Complex 3 displays notable thermal robustness and reacts with 1,3- or 1,4-cyclohexadiene to afford the same μ-η²:η²-cyclohexadiene-bridged diruthenium dihydride complex (4). In addition, oxidative transformation of 3 with CuCl₂ provides access to a heteropolymetallic Ru-Cu framework [LRu₂Cl]₂(μ-CuCl₅)₂ (5) via sequential formation of LRu₂(μ-Cl)₂ and the mixed-valent LRu₂(μ-Cl)₃ (6) intermediates. This work establishes the tethered bis-Cp ligand as a versatile platform for stabilizing diruthenium hydride motifs and enabling oxidative assembly of heterometallic frameworks.

PMID:
42544452
Bibliographic data and abstract were imported from PubMed on 03 Aug 2026.

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