Tungsten Hexacarbonyl CAS 14040-11-0
Tungsten Hexacarbonyl CAS 14040-11-0 With Best Quality
- Appearance:Powder
- Purity:99.8%
- Delivery:30days
- Sample Available:Available
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Name: Tungsten Hexacarbonyl
CAS: 14040-11-0
MOQ: 1KG
Directory Guidance on Tungsten Hexacarbonyl
Chemical Structure
Basic Info:
| Melting point | 150 °C (lit.) |
| Boiling point | 175 °C |
| density | 2.65 g/mL at 25 °C (lit.) |
| vapor density | 12.1 (vs air) |
| vapor pressure | 1.2 mm Hg ( 67 °C) |
| RTECS | YO7705000 |
| Fp | 200°C |
Product Introduction:
Tungsten Hexacarbonyl, is an important metal carbonyl complex formed by combining tungsten atoms with six carbon monoxide ligands via coordination bonds. At room temperature, it usually appears as a white or light yellow crystal, has a low melting point and sublimation characteristics, can be sublimed at about 40°C, this physical property makes it easy to purify or deposit by gas phase transport in specific processes. In terms of chemical structure, the central Tungsten atom of the Tungsten Hexacarbonyl is in a zero-valence state, and the peripheral carbon monoxide ligand forms a stable octahedral configuration with the metal by providing lone pairs of electrons. This unique electronic structure gives it high thermal stability and controllability of chemical reactions, and also determines its decomposition behavior under light, heat or reduction conditions.
Tungsten Hexacarbonyl (W(CO)6) is an organometallic coordination compound composed of transition metal tungsten and carbon monoxide ligands, with its molecular formula W(CO)6 and molecular weight being 351.90. This substance has an inky-white hue and smells pungent; its density is 2.65 g/cm3 while melting point lies around 150degC and boiling point 175degC; at room temperature, however, its stability remains good, however upon heating to 150degC it rapidly decomposes into component parts that will quickly decompose into separate components; additionally this substance cannot dissolve in water but may dissolve when mixed with certain organic solvents such as ether or hexane.
Tungsten Hexacarbonyl’s chemical properties make it an invaluable catalyst and intermediate in organic synthesis. It can undergo insertion reactions with alkenes, alkynes and diazomethanes to produce various organic tungsten compounds; furthermore its ligands undergo intermolecular substitution or exchange reactions that produce simple substituted organic molybdenum-tungsten compounds as well as more complex binuclear complexes – characteristics which make this compound an indispensable catalyst and intermediate.
Tungsten Hexacarbonyl can be prepared by reacting tungsten hexachloride with carbon monoxide at high pressure, with various synthesis methods including heating tungsten hexachloride, aluminum powder and carbon monoxide to 100degC in an autoclave; or reacting it with zinc or iron pentacarbonyl in ether.
Nature and Specifications:
| Item | Specification |
| Product Name | Tungsten Hexacarbonyl |
| CAS No. | 14040-11-0 |
| Appearance | Powder |
| Shelf Life | 2 years |
| Packing | As your requirements |
| storage temp. | Store below +30°C. |
| solubility | insoluble in H2O; soluble in organic solvents |
| form | Fine Crystalline Powder |
| Specific Gravity | 2.671 |
| color | Light yellow to beige |
| Water Solubility | insoluble |
Product service:
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Aanlysis (MOA)
- Nuclear Magnetic Resonance (NMR)
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With advances in nanotechnology and materials science, the application range of Tungsten Hexacarbonyl continues to expand. Its unique physical and chemical properties make it show irreplaceable value in many industrial scenes. For example, in chemical vapor deposition (CVD) technology, Tungsten Hexacarbonyl, as an efficient precursor material, deposited high-purity tungsten films on the substrate surface through thermal decomposition. Because of its excellent electrical conductivity, high temperature resistance and corrosion resistance, this kind of film is widely used in the metal interconnect layer of semiconductor devices, the diffusion barrier of integrated circuits and the electrode material of solar cells. By adjusting the deposition parameters, the precise control of nanometer thickness can also be achieved to meet the dual requirements of size and performance of microelectronic devices.
In the field of catalysis, Tungsten Hexacarbonyl and its derivatives showed remarkable catalytic activity, especially in the hydrogenation, isomerization and cyclization reactions of unsaturated hydrocarbons. The catalytic mechanism usually involves ligand dissociation to form an active tungsten species, which in turn promotes substrate transformation through a REDOX cycle. Compared with traditional catalysts, the Tungsten Hexacarbonyl system has higher selectivity and reaction efficiency, and it is easy to recover by gas phase separation after reaction, greatly reducing the energy consumption and cost of industrial processes. In addition, in polymer synthesis, its application as initiator or chain transfer agent has gradually attracted attention, which provides a new idea for the development of high performance polymer materials.
Photoelectric materials are another important application direction of Tungsten Hexacarbonyl. It can be converted into a tungsten oxide (WO-₃) nanostructure by photoinduced decomposition or solvothermal method, and these materials have broad prospects in electrochromic devices, photocatalytic water decomposition, and gas sensors. For example, the electrochromic characteristics of WO-₃ nanocrystalline films can be used to prepare smart Windows to reduce building energy consumption by adjusting the light transmittance. At the same time, its photocatalytic activity shows potential in the field of environmental pollution control, which can efficiently degrade organic pollutants or decompose water to produce hydrogen, which meets the technical needs of sustainable development. In recent years, researchers have also tried to compound Tungsten Hexacarbonyl with carbon materials to construct heterojunction structures to further improve the separation efficiency of photogenerated carriers.
Good catalytic performance
Tungsten Hexacarbonyl has high catalytic activity and can promote many organic reactions. For example, in organic synthesis, it catalyzes the insertion reaction of unsaturated organic compounds (olefins, alkynes and diazomethane) to produce various organic tungsten compounds. In addition to cycloaddition and carbon-carbon bond formation reactions, it can even play a catalytic role in carbonylation reactions. Unlike traditional metal catalysts, it has very high catalytic activity and allows reactions to be carried out at lower temperatures and pressures, thereby reducing energy consumption and environmental pollution.
Good selectivity
Tungsten Hexacarbonyl has good selectivity in catalytic reactions, which means that it can well control the types and proportions of reaction products. Therefore, the reaction conditions and other ligands in the reaction system can be optimized to make the process highly selective for the target product. This is very important in the synthesis of complex organic molecules because the efficiency and purity of the reaction will not be reduced by side reaction products. For example, when synthesizing polystyrene with good fluorescent properties, high selectivity of the reaction can be guaranteed.
Low toxicity and good environmental friendliness
Tungsten Hexacarbonyl is relatively non-toxic during use, and its decomposition products are metallic tungsten and carbon monoxide. Compared with some traditional catalysts, it has a broader application prospect, does not produce toxic byproducts, and has less impact on the environment. Moreover, its reaction tail gas is non-corrosive, easy to handle, and will not cause serious corrosion to the equipment used. These characteristics make Tungsten Hexacarbonyl very safe for industrial use and can fully meet the requirements of modern industry for green chemistry and environmental protection.
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Related References:
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