title: Activation of Dihydrogen by Masked Doubly Bonded Aluminum Species.
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 .
authors.affiliation: Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Nagata
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Murosaki
authors.affiliation: Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan.|Department of Biomolecular Functional Engineering, College of Engineering, Ibaraki University, 4-12-1 Nakanarisawa, Hitachi, Ibaraki, 316-8511, Japan.
authors.forename: Tomohiro
authors.identifier: 0000-0002-9133-190X
authors.initials: T
authors.lastname: Agou
authors.affiliation: Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Sasamori
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Matsuo
authors.affiliation: Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan. tokitoh@boc.kuicr.kyoto-u.ac.jp.
authors.forename: Norihiro
authors.initials: N
authors.lastname: Tokitoh
keywords: aluminum; aluminum hydride; dialumene; hydrogen; hydrogen activation