Veige Catalyst 2
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OCO-tethered-alkylidene tungsten(VI)-tert-butylacetylene. 2nd Generation Veige Catalyst.
Description:
This is the 2nd generation Veige Catalyst organometallic tungsten complex with a tethered alkylidene in the ligand backbone. The tethered alkylidene enables the ring expansion polymerization of alkyne and cyclic olefin monomers to synthesize cyclic polymers. The tethered alkylidyne forms from the precursor alkylidyne Veige Catalyst upon exposure to unsaturated substrates. This complex is known to produce the semi-conducting polymer cyclic polyacetylene. Overall, the 2nd generation Veige Catalyst offers a versatile platform for designing efficient catalysts with applications spanning organic synthesis, materials science, and pharmaceutical chemistry.
Applications:
The trianionic pincer tungsten-alkylidyne Veige Catalyst is used as catalyst for the synthesis of cyclic polymers. The Veige Catalyst will polymerize alkynes to produce cyclic polyacetylenes. The Veige Catalyst can also be converted into a series of second-generation catalysts by treating with a variety of unsaturated substrates including bulky alkynes, organoids, carbon dioxide, isocyanates, carbon disulfide among others. The metal-carbon triple bond is highly reactive and will insert into the pincer backbone readily affording a tethered alkylidene. The Veige Catalyst with its well-defined coordination environment and tunable reactivity, enables the creation of novel cyclic polymers with tailored properties such as mechanical strength, thermal stability, and chemical resistance. Applications span diverse fields including advanced composites, coatings, adhesives, conductive polymers, packaging, and elastomers.
