[no1]

uranium (IV) iodide
• Formula as commonly written: UI4
• Hill system formula: I4U1
• CAS registry number: [13470-22-9]
• Formula weight: 745.647
• Class: iodide
Synonyms
• uranium (IV) iodide
• uranium iodide
• uranium tetraiodide
Physical properties
• Colour: black
• Appearance: crystalline solid
• Melting point: 506°C (under I2 atmosphere)
• Boiling point: 757
• Density: 5.6 (15°C)
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
I 68.08 -1 [Kr].4d10.5s2.5p6
U 31.92 4 [Rn].5f2
Synthesis
Not available
Solid state structure
• Geometry of uranium: 6-coordinate: octahedral layered
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UI4 unit with the most intense ion set to 100%.
Formula: U1I4
mass %
742 0.0
743 0.7
744 0.0
745 0.0
746 100.0