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Alkyne complexes
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This chapter examines alkyne complexes. Alkynes (acetylenes) form complexes with transition metals in a similar way to alkenes, and similar bonding schemes can be applied. However, there are characteristic differences in the bonding of alkynes to metals compared to alkenes. Alkynes are stronger π-acceptors than alkenes; they have two orthogonal π-systems and can act as 2- as well as 4-electron donor ligands. Moreover, alkynes frequently undergo insertion reactions and are readily cyclotrimerized to give arenes. The chapter then studies the synthesis and bonding of alkyne complexes. Alkyne ligands can adopt a variety of coordination modes in mono and polynuclear complexes. The chapter also assesses the reactivity of alkynes. Alkynes, like alkenes, insert readily into metal–hydride bonds to give vinyl complexes.
Title: Alkyne complexes
Description:
This chapter examines alkyne complexes.
Alkynes (acetylenes) form complexes with transition metals in a similar way to alkenes, and similar bonding schemes can be applied.
However, there are characteristic differences in the bonding of alkynes to metals compared to alkenes.
Alkynes are stronger π-acceptors than alkenes; they have two orthogonal π-systems and can act as 2- as well as 4-electron donor ligands.
Moreover, alkynes frequently undergo insertion reactions and are readily cyclotrimerized to give arenes.
The chapter then studies the synthesis and bonding of alkyne complexes.
Alkyne ligands can adopt a variety of coordination modes in mono and polynuclear complexes.
The chapter also assesses the reactivity of alkynes.
Alkynes, like alkenes, insert readily into metal–hydride bonds to give vinyl complexes.
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