[no1]

uranium (II) oxide
• Formula as commonly written: UO
• Hill system formula: O1U1
• CAS registry number: [12035-97-1]
• Formula weight: 254.028
• Class: oxide
Synonyms
• uranium (II) oxide
• uranium oxide
Physical properties
• Colour:
• Appearance:
• Melting point:
• Boiling point:
• 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
O 6.30 -2 [He].2s2.2p6
U 93.70 2 [Rn].5f4
Synthesis
Not available
Solid state structure
• Geometry of uranium:
• Prototypical structure:


Isotope pattern
What follows is the calculated isotope pattern for the UO unit with the most intense ion set to 100%.
Formula: U1O1
mass %
250 0.0
251 0.7
252 0.0
253 0.0
254 100.0
255 0.0
256 0.2

[no1]

uranium (II) sulphide
• Formula as commonly written: US
• Hill system formula: S1U1
• CAS registry number: [12039-11-1]
• Formula weight: 270.095
• Class: sulphide
Synonyms
• uranium (II) sulphide
• uranium sulphide
Physical properties
• Colour: silvery
• Appearance: crystalline solid
• Melting point: 246°C
• Boiling point:
• 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
S 11.87 -2 [Ne].3s2.3p6
U 88.13 2 [Rn].5f4
Synthesis
Not available
Solid state structure
• Geometry of uranium: 6 coordinate: octahedral
• Prototypical structure: NaCl (rock salt)



Isotope pattern
What follows is the calculated isotope pattern for the US unit with the most intense ion set to 100%.
Formula: U1S1
mass %
266 0.0
267 0.7
268 0.0
269 0.0
270 100.0
271 0.8
272 4.4
273 0.0
274 0.0

[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

[no1]

uranium (III) chloride
• Formula as commonly written: UCl3
• Hill system formula: Cl3U1
• CAS registry number: [10025-93-1]
• Formula weight: 344.387
• Class: chloride
Synonyms
• uranium (III) chloride
• uranium chloride
• uranium trichloride
Physical properties
• Colour: green
• Appearance: crystalline solid
• Melting point: 837°C
• Boiling point: 1657
• Density: 5500 kg m-3
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
Cl 30.88 -1 [Ne].3s2.3p6
U 69.12 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 UCl3 unit with the most intense ion set to 100%.
Formula: U1Cl3
mass %
339 0.0
340 0.7
341 0.0
342 0.7
343 100.0
344 0.2
345 95.9
346 0.0
347 30.7
348 0.0
349 3.3

[no1]

uranium (III) fluoride
• Formula as commonly written: UF3
• Hill system formula: F3U1
• CAS registry number: [13775-06-9]
• Formula weight: 295.024
• Class: fluoride
Synonyms
• uranium (III) fluoride
• uranium fluoride
• uranium trifluoride
Physical properties
• Colour: black or purple-black
• Appearance: crystalline solid
• Melting point: 1140°C (decomposes)
• Boiling point:
• Density: 8900 kg m-3
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
F 19.32 -1 [He].2s2.2p6
U 80.68 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 UF3 unit with the most intense ion set to 100%.
Formula: U1F3
mass %
291 0.0
292 0.7
293 0.0
294 0.0
295 100.0

[no1]

uranium (III) hydride
• Formula as commonly written: UH3
• Hill system formula: H3U1
• CAS registry number: [13598-56-6]
• Formula weight: 241.053
• Class: hydride
Synonyms
• uranium (III) hydride
• uranium hydride
• uranium trihydride
Physical properties
• Colour: grey-black or black
• Appearance: crystalline solid
• Melting point:
• Boiling point:
• Density: 11100 kg m-3
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
H 1.25 -1 1s2
U 98.75 3 [Rn].5f3
Synthesis
Not available
Solid state structure
• Geometry of uranium:
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UH3 unit with the most intense ion set to 100%.
Formula: U1H3
mass %
237 0.0
238 0.7
239 0.0
240 0.0
241 100.0
242 0.0

[no1]

uranium (III) iodide
• Formula as commonly written: UI3
• Hill system formula: I3U1
• CAS registry number: [13775-18-3]
• Formula weight: 618.742
• Class: iodide
Synonyms
• uranium (III) iodide
• uranium iodide
• uranium triiodide
Physical properties
• Colour: black
• Appearance: crystalline solid
• Melting point: 766°C
• Boiling point:
• 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
I 61.53 -1 [Kr].4d10.5s2.5p6
U 38.47 3 [Rn].5f3
Synthesis
Not available
Solid state structure
• Geometry of uranium: 8 coordinate: bicapped trigonal prismatic
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UI3 unit with the most intense ion set to 100%.
Formula: U1I3
mass %
615 0.0
616 0.7
617 0.0
618 0.0
619 100.0