A Crystalline In(II) Hydride
Olympia Mouriki, Graham J. Tizzard, Simon J. Coles, Diego M. Andrada, Oriol Planas
TL;DR
Scientists created a stable crystalline hydride of indium, which could help in activating small molecules and catalysis.
Contribution
The first stable, crystalline In(II) hydride supported by bis(N-heterocyclic carbene)borate ligands is synthesized and characterized.
Findings
The compound features a covalent In–In bond and is stabilized by bis(N-heterocyclic carbene)borate ligands.
It shows nucleophilic behavior in preliminary reactivity tests, suggesting potential for bond activation.
Stability is confirmed through NMR, X-ray diffraction, and computational studies.
Abstract
Low oxidation state hydride species of heavier main-group elements are notoriously elusive due to their intrinsic instability and rapid decomposition, generating hydrogen. Nevertheless, they offer significant potential for small-molecule activation and catalysis. Herein, we report the synthesis and characterization of the first stable, crystalline, low oxidation state indium hydride, supported by bis(N-heterocyclic carbene)borate ligands and featuring a covalent In–In bond. This compound has been comprehensively characterized by NMR spectroscopy, FT-IR, single-crystal X-ray diffraction, and computational calculations. Experimental and theoretical studies reveal key features that underpin its exceptional stability. Preliminary reactivity investigations demonstrate that this discrete In(II) hydride acts as a nucleophile, opening new avenues for bond activation involving hydrides…
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Taxonomy
TopicsSynthesis and characterization of novel inorganic/organometallic compounds · Organometallic Complex Synthesis and Catalysis · Organoboron and organosilicon chemistry