[no1]

uranium (V, VI) oxide
• Formula as commonly written: U3O8
• Hill system formula: O8U3
• CAS registry number: [1344-59-8]
• Formula weight: 842.082
• Class: oxide
Synonyms
• uranium (V, VI) oxide
• uranium oxide
• pitchblende
• triuranium octaoxide
Physical properties
• Colour: very dark green-black
• Appearance:
• Melting point: 1150°C; 1300°C (decomposes to UO2)
• Boiling point:
• Density: 8380 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 15.20 -2 [He].2s2.2p6
U 84.80
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 U3O8 unit with the most intense ion set to 100%.
Formula: U3O8
mass %
836 0.0
837 0.0
838 0.0
839 2.2
840 0.0
841 0.0
842 100.0
843 0.3
844 1.6
845 0.0
846 0.0

[no1]

uranium (V, VI) oxide
• Formula as commonly written: U3O8
• Hill system formula: O8U3
• CAS registry number: [1344-59-8]
• Formula weight: 842.082
• Class: oxide
Synonyms
• uranium (V, VI) oxide
• uranium oxide
• pitchblende
• triuranium octaoxide
Physical properties
• Colour: very dark green-black
• Appearance:
• Melting point: 1150°C; 1300°C (decomposes to UO2)
• Boiling point:
• Density: 8380 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 15.20 -2 [He].2s2.2p6
U 84.80
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 U3O8 unit with the most intense ion set to 100%.
Formula: U3O8
mass %
836 0.0
837 0.0
838 0.0
839 2.2
840 0.0
841 0.0
842 100.0
843 0.3
844 1.6
845 0.0
846 0.0

[no1]

uranium (VI) chloride
• Formula as commonly written: UCl6
• Hill system formula: Cl6U1
• CAS registry number: [13763-23-0]
• Formula weight: 450.745
• Class: chloride
Synonyms
• uranium (VI) chloride
• uranium chloride
• uranium hexachloride
Physical properties
• Colour: dark green
• Appearance: crystalline solid
• Melting point: 177°C
• Boiling point: 75°C
• Density: 3600 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 47.19 -1 [Ne].3s2.3p6
U 52.81 6 [Rn]
Synthesis
Not available
Solid state structure
• Geometry of uranium: 6 coordinate: octahedral
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UCl6 unit with the most intense ion set to 100%.
Formula: U1Cl6
mass %
444 0.0
445 0.4
446 0.0
447 0.7
448 52.1
449 0.6
450 100.0
451 0.2
452 80.0
453 0.1
454 34.1
455 0.0
456 8.2
457 0.0
458 1.0
459 0.0
460 0.1

[no1]

uranium (VI) fluoride
• Formula as commonly written: UF6
• Hill system formula: F6U1
• CAS registry number: [7783-81-5]
• Formula weight: 352.019
• Class: fluoride
Synonyms
• uranium (VI) fluoride
• uranium fluoride
• uranium hexafluoride
Physical properties
• Colour: white
• Appearance: crystalline solid
• Melting point: 64°C (triple point)
• Boiling point: 56.5°C
• Density: 5090 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 32.38 -1 [He].2s2.2p6
U 67.62 6 [Rn]
Synthesis
Not available
Solid state structure
• Geometry of uranium: 6 coordinate: octahedral
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UF6 unit with the most intense ion set to 100%.
Formula: U1F6
mass %
348 0.0
349 0.7
350 0.0
351 0.0
352 100.0

[no1]

uranium (VI) oxide
• Formula as commonly written: UO3
• Hill system formula: O3U1
• CAS registry number: [1344-58-7]
• Formula weight: 286.027
• Class: oxide
Synonyms
• uranium (VI) oxide
• uranium oxide
• uranium trioxide
Physical properties
• Colour: orange-yellow
• Appearance: crystalline solid
• Melting point: (decomposes to U3O8)
• Boiling point:
• Density: 7300 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 16.78 -2 [He].2s2.2p6
U 83.22 6 [Rn]
Synthesis
Not available
Solid state structure
• Geometry of uranium:
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UO3 unit with the most intense ion set to 100%.
Formula: U1O3
mass %
282 0.0
283 0.7
284 0.0
285 0.0
286 100.0
287 0.1
288 0.6

[no1]

uranium (VI) selenide
• Formula as commonly written: USe3
• Hill system formula: Se3U1
• CAS registry number: [12138-23-7]
• Formula weight: 474.909
• Class: selenide
Synonyms
• uranium (VI) selenide
• uranium selenide
• uranium triselenide
Physical properties
• Colour: black
• Appearance: crystalline solid
• Melting point: 1160°C (decomposes)
• 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
Se 49.88 -2 [Ar].3d10.4s2.4p6
U 50.12 6 [Rn]
Synthesis
Not available
Solid state structure
• Geometry of uranium:
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the USe3 unit with the most intense ion set to 100%.
Formula: U1Se3
mass %
462 0.0
463 0.0
464 0.1
465 0.0
466 0.9
467 0.3
468 4.5
469 0.8
470 15.8
471 2.1
472 40.3
473 3.4
474 76.2
475 3.7
476 100.0
477 1.2
478 88.2
479 0.1
480 34.5
481 0.0
482 5.9
483 0.0
484 0.4

[no1]

uranium (VI) selenide
• Formula as commonly written: USe3
• Hill system formula: Se3U1
• CAS registry number: [12138-23-7]
• Formula weight: 474.909
• Class: selenide
Synonyms
• uranium (VI) selenide
• uranium selenide
• uranium triselenide
Physical properties
• Colour: black
• Appearance: crystalline solid
• Melting point: 1160°C (decomposes)
• 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
Se 49.88 -2 [Ar].3d10.4s2.4p6
U 50.12 6 [Rn]
Synthesis
Not available
Solid state structure
• Geometry of uranium:
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the USe3 unit with the most intense ion set to 100%.
Formula: U1Se3
mass %
462 0.0
463 0.0
464 0.1
465 0.0
466 0.9
467 0.3
468 4.5
469 0.8
470 15.8
471 2.1
472 40.3
473 3.4
474 76.2
475 3.7
476 100.0
477 1.2
478 88.2
479 0.1
480 34.5
481 0.0
482 5.9
483 0.0
484 0.4

[no1]

uranium (VI) telluride
• Formula as commonly written: UTe3
• Hill system formula: Te3U1
• CAS registry number: [12040-18-5]
• Formula weight: 620.829
• Class: telluride
Synonyms
• uranium (VI) telluride
• uranium telluride
• uranium tritelluride
Physical properties
• Colour: black
• Appearance: crystalline solid
• Melting point: 935°C (decomposes)
• 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 61.66 -2 [Kr].4d10.5s2.5p6
U 38.34 6 [Rn]
Synthesis
Not available
Solid state structure
• Geometry of uranium:
• Prototypical structure:



Isotope pattern
What follows is the calculated isotope pattern for the UTe3 unit with the most intense ion set to 100%.
Formula: U1Te3
mass %
604 0.0
605 0.0
606 0.1
607 0.1
608 0.5
609 0.6
610 1.9
611 2.4
612 5.5
613 6.2
614 14.4
615 13.4
616 30.3
617 23.4
618 52.8
619 32.9
620 78.5
621 29.5
622 100.0
623 14.8
624 98.0
625 0.2
626 63.8
627 0.0
628 22.7

[no1]

uranium fluoride
• Formula as commonly written: U2F9
• Hill system formula: F9U2
• CAS registry number: [12134-48-4]
• Formula weight: 647.043
• Class: fluoride
Synonyms
• uranium fluoride
• diuranium nonafluoride
Physical properties
• Colour: black
• Appearance: solid
• 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
F 26.43
U 73.57
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 U2F9 unit with the most intense ion set to 100%.
Formula: U2F9
mass %
641 0.0
642 0.0
643 0.0
644 1.4
645 0.0
646 0.0
647 100.0

[no1]

uranium fluoride
• Formula as commonly written: U2F9
• Hill system formula: F9U2
• CAS registry number: [12134-48-4]
• Formula weight: 647.043
• Class: fluoride
Synonyms
• uranium fluoride
• diuranium nonafluoride
Physical properties
• Colour: black
• Appearance: solid
• 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
F 26.43
U 73.57
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 U2F9 unit with the most intense ion set to 100%.
Formula: U2F9
mass %
641 0.0
642 0.0
643 0.0
644 1.4
645 0.0
646 0.0
647 100.0