Nucleophiles and Metal Complex Reactions

The video tutorial covers various organometallic reactions, focusing on changes in metal-ligand bonds. It explores nucleophilic and electrophilic attacks on ligands, detailing how these interactions affect the oxidation state of metals. The tutorial provides examples involving manganese, rhenium, and ruthenium complexes, illustrating the practical applications of these reactions.

What happens to the oxidation state of the metal when a nucleophile attacks a carbonyl ligand?

• It increases by one.

• It doubles.

• It decreases by one.

• It remains unchanged.

Which of the following is NOT a common nucleophile in reactions with carbene and carbyne metal complexes?

• Carbanions

• Alkoxides

• Halides

• Thiolates

In an electrophilic attack on a metal complex with an alkyl ligand, what role does the trityl cation play?

• It acts as a nucleophile.

• It acts as a reducing agent.

• It acts as an electrophile.

• It acts as a catalyst.

What is the result of a metal attacking a beta carbon in the presence of a trityl cation?

• Formation of an ethene ligand.

• Formation of a new pi bond.

• Formation of a new metal complex.

• Formation of a new sigma bond.

What happens when a metal attacks a beta-gamma pi bond?

• A new pi bond is formed.

• A substituted alkene ligand is formed.

• A new metal complex is formed.

• A new sigma bond is formed.

In the reaction of a manganese complex with methyllithium, what is the role of the methyl group?

• It acts as a catalyst.

• It acts as a nucleophile.

• It acts as an electrophile.

• It acts as a reducing agent.

What is the likely outcome when lithium phenoxide reacts with a rhenium complex?

• Formation of a new sigma bond.

• Formation of a new pi bond.

• Formation of an alkylmetal species.

• Formation of a new metal complex.

In the reaction of a ruthenium complex with the trityl cation, what is the role of the benzyl ligand?

• It acts as a nucleophile.

• It acts as an electrophile.

• It acts as a reducing agent.

• It acts as a catalyst.

What is the result of a metal pushing a pi bond onto a carbon in the presence of a trityl cation?

• Formation of a new metal complex.

• Formation of a new sigma bond.

• Formation of a hydride.

• Formation of a new pi bond.

What is the synthetic utility of the transformations discussed in the video?

• They will become apparent later in the series.

• They are used to form new sigma bonds.

• They are used to increase the oxidation state of metals.

• They are used to create new metal complexes.