3B Catalysis Flashcards
Ligand binding through multiple donor atoms to one coordination center
Chelation
What are transition metals?
Transition metals are elements that can form chelates or pincers.
What are multidentate ligands?
Multidentate ligands are ligands that can attach to a central metal atom at multiple points.
What are the ligand exchange mechanisms?
Ligand exchange mechanisms include associative/dissociative, oxidative addition/reductive elimination, bonding metathesis, and olefine metathesis.
What is transmetalation?
Transmetalation is a process involving the transfer of a metal from one ligand to another.
What are ligand transformation mechanisms?
Ligand transformation mechanisms include 1,1-migratory insertions, decarbonylation, 1,2-migratory insertion, and β-hydride elimination.
What is a catalyst?
A catalyst is a substance that alters the rate of reaction without appearing in any of the products.
What does a catalyst do for a reversible reaction?
A catalyst alters the rate at which equilibrium is attained.
What is a homogenous catalyst?
A homogenous catalyst is in the same phase as the components of the reaction.
What is a heterogenous catalyst?
A heterogenous catalyst is in a different phase from the components of the reaction.
Consists of a series of stoichiometric reactions that form a closed loop
Catalytic cycle
