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Updated: Aug 5, 2026

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
Published on: July 27, 2022
Reactivity of tethered bis-cyclopentadienyl-supported diruthenium polyhydride complexes
Po-Sen Huang1, Kuheli Das1, Wei-Chen Fu1
1Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu City 300093, Taiwan. hsuehjuliu@nycu.edu.tw.
None:
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 LiBsBu3H 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.
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