User:Praseodymium-141/Molybdenum compounds
| Oxidation state |
Example[1][2] |
|---|---|
| -4 | Na 4[Mo(CO) 4] |
| −1 | Na 2[Mo 2(CO) 10] |
| 0 | Mo(CO) 6 |
| +1 | Na[C 6H 6Mo] |
| +2 | MoCl 2 |
| +3 | MoBr 3 |
| +4 | MoS 2 |
| +5 | MoCl 5 |
| +6 | MoF
6 |
Molybdenum compounds are compounds formed by the element
From the perspective of commerce, the most important compounds are molybdenum disulfide (MoS
2) and molybdenum trioxide (MoO
3). The black disulfide is the main mineral. It is roasted in air to give the trioxide:[3]
- 2 MoS
2 + 7 O
2 → 2 MoO
3 + 4 SO
2
The trioxide, which is volatile at high temperatures, is the precursor to virtually all other Mo compounds as well as alloys. Molybdenum has several oxidation states, the most stable being +4 and +6 (bolded in the table at left).
Molybdenum(VI) oxide is soluble in strong
- Molybdenum(II) chloride MoCl2, which exists as the hexamer Mo6Cl12 and the related dianion [Mo6Cl14]2-.
- Molybdenum(III) chloride MoCl3, a dark red solid, which converts to the anion trianionic complex [MoCl6]3-.
- Molybdenum(IV) chloride MoCl4, a black solid, which adopts a polymeric structure.
- Molybdenum(V) chloride MoCl5 dark green solid, which adopts a dimeric structure.
- Molybdenum(VI) chloride MoCl6 is a black solid, which is monomeric and slowly decomposes to MoCl5 and Cl2 at room temperature.[6]
Like chromium and some other transition metals, molybdenum forms quadruple bonds, such as in Mo2(CH3COO)4 and [Mo2Cl8]4−.[3][7] The Lewis acid properties of the butyrate and perfluorobutyrate dimers, Mo2(O2CR)4 and Rh2(O2CR) 4, have been reported.[8]
The oxidation state 0 and lower are possible with carbon monoxide as ligand, such as in molybdenum hexacarbonyl, Mo(CO)6.[3][9]
References
- ^ Schmidt, Max (1968). "VI. Nebengruppe". Anorganische Chemie II (in German). Wissenschaftsverlag. pp. 119–127.
- ISBN 978-0-387-09848-7.
- ^ ISBN 978-3-11-007511-3.
- .
- ISBN 978-0-8247-8433-1.
- PMID 23172658.
- ISBN 9781118744994.
- ^ Drago, R. S. , Long, J. R., and Cosmano, R. (1982) Comparison of the Coordination Chemistry and inductive Transfer through the Metal-Metal Bond in Adducts of Dirhodium and Dimolybdenum Carboxylates . Inorganic Chemistry 21, 2196-2201.
- ISBN 978-0-387-09848-7.
Category:Molybdenum Category:Molybdenum compounds Category:Chemical compounds by element