Standard Organometallic Reaction Types Ligand separation/affiliation Insertion/end Oxidative expansion/reductive end s - bond metathesis Isomerization Nucleophilic or electrophilic assault at metal Nucleophilic or electrophilic assault at ligand Reaction Types
Slide 2Less Common Reaction Types Hapticity changes Single-electron oxidation/diminishment Bond homolysis Electrocyclic responses Reaction Types
Slide 3What else is there? Most organometallic responses can be composed regarding arrangement of these standard responses. Regardless of whether they truly go like that is not generally certain. When searching for a satisfactory component, attempt to limit yourself to the "standard steps". Response Types
Slide 4Ligand separation/affiliation Electron number changes by -/+ 2 No adjustment in oxidation state Dissociation most straightforward if ligand stable all alone (CO, olefin, phosphine, Cl - , ...) Steric components essential Reaction Types
Slide 5Insertion/disposal Migratory addition! The ligands included must be cis . Electron number changes by -/+ 2 No adjustment in oxidation state Olefins: 1,2-inclusion, b - end CO, RNC: 1,1-inclusion, a - end Reaction Types
Slide 6Oxidative option/reductive disposal Electron tally changes by +/ - 2 (expecting the reactant was not yet planned) Oxidation state changes by +/ - 2 Mechanism might be confounded Reaction Types
Slide 7s - bond metathesis Requires a vacant site Electron tally does not change Oxidation state does not change Can regularly be seen as a corrosive base response Reaction Types
Slide 8Isomerization Movement of ligands around the metal No adjustment in electron tally, oxidation state Common for 3-and 5-facilitate species, less normal for 4-arrange edifices, barely ever for 6-organize octahedral buildings Reaction Types
Slide 9Nucleophilic or electrophilic assault at metal Nucleophilic: requires an unfilled site is essentially ligand affiliation Electrophilic: requires a metal-focused solitary match no adjustment in electron include for the most part +2 oxidation state Reaction Types
Slide 10Nucleophilic or electrophilic assault at ligand Nucleophilic: requires an electron-poor ligand iota (acidic proton, composed C=X bond) Electrophilic: requires a ligand-focused electron combine (for the most part a solitary combine, ligand p - bond, or M-C s - bond) frequently lessens electron tally by 2 Reaction Types
Slide 11Hapticity changes Often indenyl, dienes; here and there for Cp Changes electron tally Does not change oxidation state Is generally a path for a framework to "make room" for another response or to keep away from tallies over 18-e Reaction Types
Slide 12Single-electron oxidation/diminishment Changes both electron tally and oxidation state by 1 Usually by an additional oxidant/reductant or electrochemically Oxidized and decreased species ordinarily contrast broadly in reactivity Reaction Types
Slide 13Bond homolysis Requires a frail M-C bond Typically for: heavier fundamental gathering metals first-push move metals in high oxidation states Reaction Types
Slide 14Electrocyclic responses Can frequently be composed as inclusions or oxidative options Most basic for edifices bearing two composed alkenes or alkynes and in olefin metathesis Usually change both electron check and oxidation state Reaction Types
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