Molybdenum Hexacarbonyl

Molybdenum Hexacarbonyl Basic Properties

• Molecular Formula: C6MoO6

• Appearance: White crystal

• Molecular Weight: 264

• Melting Point: 150 °C (dec.)(lit.)

• Boiling Point: 156 °C(lit.)

• Density: 1.96 g/mL at 25 °C(lit.)

• Vapour Pressure: 0.13 hPa (20 °C)

• Solubility: Slightly soluble in tetrahydrofuran, diethylene glycol dimethyl ether and acetonitrile

• Storage Conditions: Store at <= 20°C

Molybdenum Hexacarbonyl Key Features

High purity and stable volatility

Molybdenum hexacarbonyl can be efficiently purified by sublimation under mild heating conditions, releasing metallic molybdenum atoms. This makes it a preferred material for preparing ultrathin metal films and nanomaterials of molybdenum, improving deposition uniformity and product quality.

Excellent thermal decomposition characteristics

Mo(CO)6 can decompose into metallic molybdenum and carbon monoxide upon heating, exhibiting highly controllable decomposition behavior. It can be used in MOCVD and surface modification experiments to improve film density.

Strong carbon acylation ability

It participates in organometallic chemistry and coordination catalysis reactions, and can be used as a catalyst precursor or reaction intermediate to improve reaction selectivity and efficiency.

Relatively mild toxicity characteristics

Compared to other metal carbonyl compounds, Mo(CO)₆ has relatively low toxicity and moderate vapor pressure at room temperature, which provides a better safety window and ease of handling for laboratory operations and industrial applications.

Molybdenum Hexacarbonyl Main Applications

Electronic material deposition

In the field of microelectronics, molybdenum hexacarbonyl is used to deposit high-purity molybdenum thin films on substrates via CVD technology. These films are used as barrier layers, interconnects, and gate materials in integrated circuits, and their suitable deposition temperature ensures good film quality and adhesion.

Catalytic systems

Mo(CO)₆ and its derivatives exhibit excellent performance in a variety of catalytic reactions, including olefin metathesis, hydrodesulfurization, and water-gas shift reaction.

Nanomaterial synthesis

Various molybdenum-based nanomaterials, such as molybdenum disulfide nanosheets, molybdenum nanoparticles, and molybdenum-based quantum dots, can be prepared by decomposing Mo(CO)₆ in either the solution or gas phase. These materials show great promise for applications in energy storage, catalysis, and sensors.

Surface engineering and coating technology

Utilizing the thermal decomposition properties of this compound, molybdenum-based functional coatings can be prepared on various substrate surfaces. These coatings significantly improve the wear resistance, corrosion resistance, and electrical properties of the substrates, and are widely used for surface strengthening of tools, molds, and critical mechanical components.

Precautions

1. Molybdenum hexacarbonyl is easily decomposed and should be stored in an inert gas environment, away from light and heat sources, to avoid sublimation and decomposition.

2. All operations involving heating must be carried out in a well-ventilated fume hood equipped with carbon monoxide detection and alarm devices.

3. Since mixing Mo(CO)6 with strong oxidants may cause violent reactions, it is prohibited to coexist with strong oxidants.

4. Avoid inhalation and skin contact. Inhalation of dust may irritate the respiratory tract, and skin contact requires washing with soap and plenty of water.

FAQ

1. Can Mo(CO)6 be used in liquid-phase reactions?

Yes, this compound is soluble in a variety of organic solvents and participates in coordination and catalytic reactions.

2. What are the purity grades of molybdenum hexacarbonyl?

Generally, it is 99%–99.9% research grade, but electronic grade high purity can also be customized.

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