Molybdenum_tribromide

Molybdenum(III) bromide

Molybdenum(III) bromide

Chemical compound

Molybdenum(III) bromide is the inorganic compound with the formula MoBr3. It is a black solid that is insoluble in most solvents but dissolves in donor solvents such as pyridine.

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Preparation

Molybdenum(III) bromide is produced by the reaction of elemental molybdenum and bromine at 350 °C (662 °F).[1]

It can also be prepared from the reduction of molybdenum(IV) bromide with molybdenum metal, hydrogen gas, or a hydrocarbon.[2]

It has a structure consisting of infinite chains of face-sharing octahedra with alternatingly short and long Mo-Mo contacts. The same structure is adopted by the tribromides of ruthenium and technetium.[3][4] In contrast, in the high temperature phase of titanium(III) iodide, the Ti---Ti separation is invariant.

References

  1. [1]
    F. Hein, S. Herzog "Molybdenum(III) Bromide" in Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1407.
  2. [2]
    Perry, Dale L. (2011). Handbook of Inorganic Compounds (2nd ed.). Boca Raton: Taylor & Francis. p. 279. ISBN 978-1-4398-1461-1.
  3. [3]
    Dietrich Babel: Die Verfeinerung der MoBr3-Struktur (Refinement of the MoBr3-Structure) In: Journal of Solid State Chemistry. 1972, volume 4, S. 410–416, doi:10.1016/0022-4596(72)90156-9.
  4. [4]
    Order-Disorder Transformation in RuBr3 and MoBr3: A two-Dimensional Ising Model" Merlino, S.; Labella, L.; Marchetti, F.; Toscani, S. Chemistry of Materials 2004, volume 16, p3895-p3903
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