Bis(acetonitrile)tetracarbonyltungsten(0)
[CAS# 16800-45-6]

Identification

• Classification: Organic raw materials >> Organometallic compound >> Organic scandium, tantalum, thallium, tungsten, antimony, lanthanum, lead, vanadium, molybdenum, chromium, ytterbium, etc.
• Name: Bis(acetonitrile)tetracarbonyltungsten(0)
• Synonyms: acetonitrile carbon monoxide tungsten
• Molecular Formula: C₈H₆N₂O₄W
• Molecular Weight: 377.98
• CAS Registry Number: 16800-45-6
• SMILES: CC#N.CC#N.[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[W]

Discovory and Applicatios

Bis(acetonitrile)tetracarbonyltungsten(0) is an organometallic compound featuring tungsten in its zero oxidation state, coordinated by four carbon monoxide (CO) ligands and two acetonitrile (MeCN) ligands. This substance, known for its distinctive coordination environment and electronic properties, is utilized in various chemical applications, particularly in catalysis and organic synthesis.

The discovery of bis(acetonitrile)tetracarbonyltungsten(0) can be traced back to research aimed at exploring the chemistry of transition metal carbonyl complexes. Tungsten, a transition metal known for its ability to form stable complexes with carbon monoxide, plays a key role in these studies. The synthesis of bis(acetonitrile)tetracarbonyltungsten(0) involves the reaction of tungsten hexacarbonyl with acetonitrile under controlled conditions, resulting in a compound where tungsten is stabilized by both CO and MeCN ligands.

Structurally, bis(acetonitrile)tetracarbonyltungsten(0) consists of a central tungsten atom coordinated by four carbon monoxide ligands and two acetonitrile ligands. The CO ligands are crucial in stabilizing tungsten in its zero oxidation state, while the acetonitrile ligands contribute to the compound's solubility and reactivity. The unique arrangement of these ligands imparts specific chemical properties to the compound, making it valuable in various chemical processes.

In catalysis, bis(acetonitrile)tetracarbonyltungsten(0) serves as an effective catalyst or catalyst precursor in several reactions. Its low oxidation state and the electron-donating effects of the CO and MeCN ligands make it suitable for use in olefin metathesis and hydrogenation reactions. In particular, the compound has been employed in the hydrogenation of alkenes and alkynes, where it facilitates the addition of hydrogen to unsaturated hydrocarbons.

In organic synthesis, bis(acetonitrile)tetracarbonyltungsten(0) is utilized as a reagent for the formation of tungsten-based organometallic intermediates. These intermediates can be further modified to yield various organic compounds with desirable properties. The compound's ability to stabilize tungsten in its zero oxidation state allows for the activation of small molecules and the formation of new chemical bonds.

Furthermore, bis(acetonitrile)tetracarbonyltungsten(0) has potential applications in material science. Its coordination chemistry enables the design of novel tungsten-based materials with specific electronic and optical characteristics. For example, the compound can be used to prepare tungsten-containing polymers and composites with enhanced properties such as high thermal stability and electrical conductivity.

In summary, bis(acetonitrile)tetracarbonyltungsten(0) is a versatile organometallic compound with significant applications in catalysis, organic synthesis, and material science. Its unique coordination environment and reactivity make it a valuable tool for advancing chemical processes and developing new materials.