A golden ring: molecular gold carbido complexes.

Area of Science:

• Organometallic Chemistry
• Coordination Chemistry
• Materials Science

Background:

• Carbyne complexes are crucial in organometallic chemistry.
• Developing new synthetic routes for metal carbido complexes is an active research area.
• Transmetalation reactions offer pathways to complex molecular architectures.

Purpose of the Study:

• To synthesize novel stannylcarbynes as transmetalation agents.
• To prepare heteronuclear molecular gold carbido complexes.
• To investigate the carbido unit transfer capabilities of these new complexes.

Main Methods:

• Synthesis of stannylcarbynes [M(≡CSnMe3)(CO)2(Tp*)] (M = Mo, W) from corresponding bromo-carbynes.
• Carbyne transmetalation reactions with gold precursors.
• Investigation of carbido unit transfer to palladium.

Main Results:

• Readily obtained stannylcarbynes [M(≡CSnMe3)(CO)2(Tp*)] were synthesized.
• Effective preparation of heteronuclear molecular gold carbido complexes, including [M(≡CAuPPh3)(CO)2(Tp*)] and [W(≡CAu)(CO)2(Tp*)]4.
• Demonstrated transfer of the carbido unit from gold complexes to palladium.

Conclusions:

• Stannylcarbynes are effective reagents for synthesizing gold carbido complexes.
• The synthesized gold carbido complexes can transfer carbido ligands.
• This work expands the scope of carbyne chemistry and metal carbido complex synthesis.