Plumbane

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Plumbane
Skeletal formula of plumbane
Spacefill model of plumbane
  Lead, Pb
  Hydrogen, H
Names
IUPAC name
Plumbane
Other names
lead tetrahydride, tetrahydridolead, lead(IV) hydride, hydrogen plumbide
Identifiers
3D model (
JSmol
)
ChEBI
ChemSpider
  • InChI=1S/Pb.4H checkY
    Key: XRCKXJLUPOKIPF-UHFFFAOYSA-N checkY
  • InChI=1/Pb.4H/rH4Pb/h1H4
    Key: XRCKXJLUPOKIPF-BJORFFIVAF
  • [Pb]
Properties
PbH4
Molar mass 211.23 g/mol
Appearance Colorless gas
Boiling point −13 °C (9 °F; 260 K)
Structure
Tetrahedral at the Pb atom
Related compounds
Related tetrahydride compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Plumbane is an

inorganic chemical compound with the chemical formula PbH4. It is a colorless gas. It is a metal hydride and group 14 hydride composed of lead and hydrogen.[1] Plumbane is not well characterized or well known, and it is thermodynamically unstable with respect to the loss of a hydrogen atom.[2] Derivatives of plumbane include lead tetrafluoride, PbF4, and tetraethyllead
, (CH3CH2)4Pb.

History

Until recently, it was uncertain whether plumbane had ever actually been synthesized,

Hartree–Fock relativistic calculation studies, which investigate the stabilities, geometries, and relative energies of hydrides of the formula MH4 or MH2.[2][6][7]

Properties

Plumbane is an unstable colorless

oxidation states of hydrogen and lead are +1 and -4, respectively, because the electronegativity
of lead(IV) is higher than that of hydrogen. The stability of hydrides MH4 (M = C–Pb) decreases as the atomic number of M increases.

Preparation

Early studies of PbH4 revealed that the molecule is unstable as compared to its lighter congeners silane, germane, and stannane.[10] It cannot be made by methods used to synthesize GeH4 or SnH4.

In 1999, plumbane was synthesized from lead(II) nitrate, Pb(NO3)2, and sodium borohydride, NaBH4.[11] A non-nascent mechanism for plumbane synthesis was reported in 2005.[12]

In 2003, Wang and Andrews carefully studied the preparation of PbH4 by laser ablation and additionally identified the infrared (IR) bands.[13]

Congeners

Congeners of plumbane include:

References

  1. ^ Porritt, C. J. (1975). Chem. Ind-London. 9: 398. {{cite journal}}: Missing or empty |title= (help)
  2. ^
    hdl:11858/00-001M-0000-0028-1862-2
    .
  3. ^ Cotton, F. A.; Wilkinson, G.; Murillo, C. A.; Bochman, M. Advanced Inorganic Chemistry. Wiley: New York, 1999
  4. doi:10.1002/cber.19200530915
    .
  5. doi:10.1021/ic50005a014
    .
  6. doi:10.1016/0009-2614(74)85085-2
    .
  7. S2CID 4183019
    .
  8. ^ CRC Handbook of Chemistry and Physics Online Edition.
  9. S2CID 97874625
    .
  10. doi:10.1002/qua.20142
    .
  11. Bibcode:1999OptSp..86..686K. Archived from the original
    (PDF) on 2016-03-04. Retrieved 2012-12-31.
  12. PMID 16395924
    .
  13. PMID 12785799
    .
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