Activation of Dihydrogen by Masked Doubly Bonded Aluminum Species

Koichi Nagata; Takahiro Murosaki; Tomohiro Agou; Takahiro Sasamori; Tsukasa Matsuo; Norihiro Tokitoh

doi:10.1002/anie.201606684

Activation of Dihydrogen by Masked Doubly Bonded Aluminum Species

Angew Chem Int Ed Engl. 2016 Oct 4;55(41):12877-80. doi: 10.1002/anie.201606684. Epub 2016 Aug 16.

Authors

Koichi Nagata¹, Takahiro Murosaki², Tomohiro Agou^{1

3}, Takahiro Sasamori¹, Tsukasa Matsuo², Norihiro Tokitoh⁴

Affiliations

¹ Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan.
² Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
³ Department of Biomolecular Functional Engineering, College of Engineering, Ibaraki University, 4-12-1 Nakanarisawa, Hitachi, Ibaraki, 316-8511, Japan.
⁴ Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan. tokitoh@boc.kuicr.kyoto-u.ac.jp.

PMID: 27529165
DOI: 10.1002/anie.201606684

Abstract

Activation of dihydrogen by masked dialumenes (Al=Al doubly bonded species) is reported. Reactions of barrelene-type dialumanes, which have the reactivity as masked equivalents of 1,2-diaryldialumenes ArAl=AlAr, with H2 afforded dihydroalumanes ArAlH2 at room temperature (Ar: bulky aryl groups). These dihydroalumanes form hydrogen-bridged dimers [ArHAl(μ-H)]2 in the crystalline state, while a monomer-dimer equilibrium was suggested in solution. The 1,2-diaryldialumenes generated from the barrelene-type dialumanes are the putative active species in the cleavage of H2 .

Keywords: aluminum; aluminum hydride; dialumene; hydrogen; hydrogen activation.

Publication types

Research Support, Non-U.S. Gov't