[no1]

uranium (III) sulphide
• Formula as commonly written: U2S3
• Hill system formula: S3U2
• CAS registry number: [12138-13-5]
• Formula weight: 572.256
• Class: sulphide
Synonyms
• uranium (III) sulphide
• uranium sulphide
• diuranium sulphide
Physical properties
• Colour: blue-black or grey-black
• Appearance: crystalline solid
• Melting point: 1850°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 16.81 -2 [Ne].3s2.3p6
U 83.19 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 U2S3 unit with the most intense ion set to 100%.
Formula: U2S3
mass %
566 0.0
567 0.0
568 0.0
569 1.4
570 0.0
571 0.2
572 100.0
573 2.4
574 13.3
575 0.2
576 0.7
577 0.0
578 0.0

[no1]

uranium (IV) bromide
• Formula as commonly written: UBr4
• Hill system formula: Br4U1
• CAS registry number: [13470-20-7]
• Formula weight: 557.645
• Class: bromide
Synonyms
• uranium (IV) bromide
• uranium bromide
• uranium tetrabromide
Physical properties
• Colour: brown
• Appearance: crystalline solid
• Melting point: 519°C
• Boiling point: 791°C
• Density: 5190 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
Br 57.32 -1 [Ar].3d10.4s2.4p6
U 42.68 4 [Rn].5f2
Synthesis
Not available
Solid state structure
• Geometry of uranium: 7 coordinate: pentagonal bipyramidal
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UBr4 unit with the most intense ion set to 100%.
Formula: U1Br4
mass %
550 0.0
551 0.1
552 0.0
553 0.5
554 17.6
555 0.7
556 68.5
557 0.5
558 100.0
559 0.1
560 64.8
561 0.0
562 15.8

[no1]

uranium (IV) chloride
• Formula as commonly written: UCl4
• Hill system formula: Cl4U1
• CAS registry number: [10026-10-5]
• Formula weight: 379.84
• Class: chloride
Synonyms
• uranium (IV) chloride
• uranium chloride
• uranium tetrachloride
Physical properties
• Colour: green
• Appearance: crystalline solid
• Melting point: 590°C
• Boiling point: 791°C
• Density: 4720 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 37.33 -1 [Ne].3s2.3p6
U 62.67 4 [Rn].5f2
Synthesis
Not available
Solid state structure
• Geometry of uranium: 8 coordinate: dodecahedral
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UCl4 unit with the most intense ion set to 100%.
Formula: U1Cl4
mass %
374 0.0
375 0.6
376 0.0
377 0.7
378 78.2
379 0.4
380 100.0
381 0.1
382 48.0
383 0.0
384 10.2
385 0.0
386 0.8

[no1]

uranium (IV) fluoride
• Formula as commonly written: UF4
• Hill system formula: F4U1
• CAS registry number: [10049-14-6]
• Formula weight: 314.023
• Class: fluoride
Synonyms
• uranium (IV) fluoride
• uranium fluoride
• uranium tetrafluoride
Physical properties
• Colour: green
• Appearance: crystalline solid
• Melting point: 960°C; 1036°C
• Boiling point: 1417°C
• Density: 6700 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 24.20 -1 [He].2s2.2p6
U 75.80 4 [Rn].5f2
Synthesis
Not available
Solid state structure
• Geometry of uranium: 8 coordinate: square antiprismatic
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UF4 unit with the most intense ion set to 100%.
Formula: U1F4
mass %
310 0.0
311 0.7
312 0.0
313 0.0
314 100.0

[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

[no1]

uranium (IV) oxide
• Formula as commonly written: UO2
• Hill system formula: O2U1
• CAS registry number: [1344-57-6]
• Formula weight: 270.028
• Class: oxide
Synonyms
• uranium (IV) oxide
• uranium dioxide
• uranium oxide
• pitchblende
Physical properties
• Colour: dark brown
• Appearance: crystalline solid
• Melting point: 2827°C
• Boiling point:
• Density: 10970 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
O 11.85 -2 [He].2s2.2p6
U 88.15 4 [Rn].5f2
Synthesis
Not available
Solid state structure
• Geometry of uranium:
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UO2 unit with the most intense ion set to 100%.
Formula: U1O2
mass %
266 0.0
267 0.7
268 0.0
269 0.0
270 100.0
271 0.1
272 0.4

[no1]

uranium (IV) telluride
• Formula as commonly written: UTe2
• Hill system formula: Te2U1
• CAS registry number: [12138-37-3]
• Formula weight: 493.229
• Class: telluride
Synonyms
• uranium (IV) telluride
• uranium ditelluride
• uranium telluride
Physical properties
• Colour: dark grey or black
• Appearance: crystalline solid
• Melting point: 1180°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
Te 51.74 -2 [Kr].4d10.5s2.5p6
U 48.26 4 [Rn].5f2
Synthesis
Alpha and beta forms exist
Solid state structure
• Geometry of uranium:
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UTe2 unit with the most intense ion set to 100%.
Formula: U1Te2
mass %
480 0.0
481 0.0
482 0.4
483 0.3
484 1.3
485 2.2
486 6.3
487 4.8
488 17.9
489 14.9
490 36.9
491 23.2
492 66.8
493 21.8
494 100.0
495 0.4
496 93.7
497 0.0
498 50.0