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Molybdenum(III) bromide

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Molybdenum(III) bromide

Appearance
  
dark green to black solid

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.

Preparation

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

2   M o + 3   B r 2 2   M o B r 3

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. In contrast, in the high temperature phase of titanium(III) iodide, the Ti---Ti separation is invariant.

References

Molybdenum(III) bromide Wikipedia