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Issue 69, 2019
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Two quasi-stable lead(II) hydrides at ambient temperature

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Simple reactions of their terphenyl lead bromide precursors with DIBAL-H in diethyl ether solution at ca. −78 °C leads to the isolation of the hydrides {Pb(μ-H)ArPri4}2 (ArPri4 = C6H3-2,6-(C6H3-2,6-Pri2)2) (1) and {Pb(μ-H)ArMe6}2 (ArMe6 = C6H3-2,6-(C6H2-2,4,6-Me3)2) (2) in good yield (60–80%). The isolated solids are stable at up to 5 °C for several weeks but are thermally labile in solution. Hydride 1 decomposes to the diplumbyne ArPri4PbPbArPri4, while 2 decomposes to the plumbylene Pb(ArMe6)2. The decomposition of 1 was determined to be zero order with a rate constant of ca. 2.0 × 10−5 M min−1 at 298 K.

Graphical abstract: Two quasi-stable lead(ii) hydrides at ambient temperature

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The article was received on 04 Jul 2019, accepted on 02 Aug 2019 and first published on 02 Aug 2019

Article type: Communication
DOI: 10.1039/C9CC05106F
Chem. Commun., 2019,55, 10285-10287

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    Two quasi-stable lead(II) hydrides at ambient temperature

    J. D. Queen, J. C. Fettinger and P. P. Power, Chem. Commun., 2019, 55, 10285
    DOI: 10.1039/C9CC05106F

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