[no1]

uranium (III) bromide
• Formula as commonly written: UBr3
• Hill system formula: Br3U1
• CAS registry number: [13470-19-4]
• Formula weight: 477.741
• Class: bromide
Synonyms
• uranium (III) bromide
• uranium bromide
• uranium tribromide
Physical properties
• Colour: red
• Appearance: crystalline solid
• Melting point: 727°C
• Boiling point: 1537°C
• Density:
Element analysis and oxidation numbers
For each compound, and where possible, a formal oxidation number for each element is given, but the usefulness of this number is limited, especially so for p-block elements in particular. Based upon that oxidation number, an electronic configuration is also given but note that for more exotic compounds you should view this as a guide only.
Element % Formal oxidation state Formal electronic configuration
Br 50.18 -1 [Ar].3d10.4s2.4p6
U 49.82 3 [Rn].5f3
Synthesis
Not available
Solid state structure
• Geometry of uranium: 9 coordinate: tricapped trigonal prismatic
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UBr3 unit with the most intense ion set to 100%.
Formula: U1Br3
mass %
471 0.0
472 0.2
473 0.0
474 0.7
475 34.3
476 0.7
477 100.0
478 0.2
479 97.3
480 0.0
481 31.5