Isolation of Elusive HAsAsH in a Crystalline Diuranium(IV) Complex

Benedict M Gardner, Gabor Balazs, Manfred Scheer, Ashley J Wooles, Floariana Tuna, Eric J L Mcinnes, Jonathan McMaster, William Lewis, Alexander J Blake, Stephen T Liddle

    Research output: Contribution to journalArticlepeer-review

    89 Downloads (Pure)


    he HAsAsH molecule has hitherto only been proposed tentatively as a short-lived species generated in electrochemical or microwave-plasma experiments. After two centuries of inconclusive or disproven claims of HAsAsH formation in the condensed phase, we report the isolation and structural authentication of HAsAsH in the diuranium(IV) complex [{U(TrenTIPS)}2(μ-η2:η2-As2H2)] (3, TrenTIPS=N(CH2CH2NSiPri 3)3; Pri=CH(CH3)2). Complex 3 was prepared by deprotonation and oxidative homocoupling of an arsenide precursor. Characterization and computational data are consistent with back-bonding-type interactions from uranium to the HAsAsH π∗-orbital. This experimentally confirms the theoretically predicted excellent π-acceptor character of HAsAsH, and is tantamount to full reduction to the diarsane-1,2-diide form
    Original languageEnglish
    Pages (from-to)15250-15254
    Number of pages4
    JournalAngewandte Chemie (International Edition)
    Publication statusPublished - 28 Oct 2015


    Dive into the research topics of 'Isolation of Elusive HAsAsH in a Crystalline Diuranium(IV) Complex'. Together they form a unique fingerprint.

    Cite this