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Names | |||
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IUPAC names
Molybdenum(III) chloride
Molybdenum trichloride | |||
Identifiers | |||
3D model (
JSmol)
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ChemSpider | |||
ECHA InfoCard | 100.033.418 | ||
EC Number |
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PubChem
CID
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UNII | |||
CompTox Dashboard (
EPA)
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Properties | |||
MoCl3 | |||
Molar mass | 202.30 g/mol | ||
Appearance | dark red solid paramagnetic | ||
Density | 3.58 g/cm3 | ||
Melting point | 410 °C (770 °F; 683 K) (decomposes) | ||
insoluble | |||
Solubility | insoluble in ethanol, diethyl ether | ||
+43.0·10−6 cm3/mol | |||
Hazards | |||
Flash point | Non-flammable | ||
Related compounds | |||
Other
anions
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Molybdenum(III) fluoride Molybdenum(III) bromide Molybdenum(III) iodide | ||
Other
cations
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Chromium(IV) chloride Tungsten(V) chloride | ||
Related molybdenum chlorides
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Molybdenum(II) chloride Molybdenum(IV) chloride Molybdenum(V) chloride | ||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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Molybdenum(III) chloride is the inorganic compound with the formula MoCl3. It forms purple crystals. [1]
Molybdenum(III) chloride is synthesized by the reduction of molybdenum(V) chloride with hydrogen. [2] A higher yield is produced by the reduction of pure molybdenum(V) chloride with anhydrous tin(II) chloride as the reducing agent. [3]
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. [4]
Molybdenum trichloride gives a ether complexes MoCl3(thf)3 and MoCl3(Et2O)3. They are beige, paramagnetic solids. Both feature octahedral Mo centers. The diethyl ether complex is synthesized by reducing a Et2O solution of MoCl5 with tin powder. [5] Older procedures involve stepwise reduction involving isolation of the Mo(IV)-thf complex. [6]
Hexa(tert-butoxy)dimolybdenum(III) is prepared by the salt metathesis reaction from MoCl3(thf)3: [7]