3D model (JSmol)
|Molar mass||202.30 g/mol|
|Appearance||dark red solid |
|Melting point||410 °C (770 °F; 683 K) (decomposes)|
|Solubility||insoluble in ethanol, diethyl ether|
Related molybdenum chlorides
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis and structure
Molybdenum(III) chloride is synthesized by the reduction of molybdenum(V) chloride with hydrogen. A higher yield is produced by the reduction of pure molybdenum(V) chloride with anhydrous tin(II) chloride as the reducing agent.
Molybdenum trichloride exists as two polymorphs: alpha (α) and beta (β). The alpha structure is similar to that of aluminum chloride (AlCl3). In this structure, molybdenum has octahedral coordination geometry and exhibits cubic close-packing in its crystalline structure. The beta structure, however, exhibits hexagonal close packing.
Molybdenum trichloride gives a THF complex MoCl3(thf)3. This pale orange solid is synthesized by reducing a THF solution of MoCl4(THF)2 with tin powder. The complex has octahedral geometry. The IR spectrum is free of intense bands in the 900–1000 cm−1, a characteristic of molybdenum oxo species.
- 2 MoCl3(thf)3 + 6 LiOBu-t → Mo2(OBu-t)6 + 6 LiCl + 6 thf
- Perry, Dale L. (2011). Handbook of Inorganic Compounds (2nd ed.). Boca Raton: Taylor & Francis. pp. 279. ISBN 978-1-4398-1461-1.
- "Preparation of Trichloride and Tetrachloride of Molybdenum". Journal of Research of the National Bureau of Standards Section A 63A (2): 185–188. 1959. doi:10.6028/jres.063A.013. PMID 31216151.
- Larson, Melvin L. (1970). "Preparation of Some Metal Halides- Anhydrous Molybdenum Halides and Oxide Halides - A Summary". Inorganic Syntheses, Volume 12. pp. 178–181.
- "Structural and scanning microscopy studies of layered compounds MCl3 (M= Mo, Ru, Cr) and MOCl2 (M= V, Nb, Mo, Ru, Os)". Journal of Alloys and Compounds 246 (1–2): 70–79. 1997. doi:10.1016/S0925-8388(96)02465-6.
- Dilworth, Jonathan R.; Richards, Raymond L. (1990). "The Synthesis of Molybdenum and Tungsten Dinitrogen Complexes". Inorganic Syntheses 28: 33–43. doi:10.1002/9780470132593.ch7.
- Broderick, Erin M.; Browne, Samuel C.; Johnson, Marc J. A. (2014). "Dimolybdenum and Ditungsten Hexa(Alkoxides)". Inorganic Syntheses 36: 95–102. doi:10.1002/9781118744994.ch18.
- The Synthesis of Molybdenum and Tungsten Dinitrogen Complexes.. Inorganic Syntheses: Reagents for Transition Metal Complex and Organometallic Syntheses.. 28. January 1990. pp. 33–43.
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