Alkoxides and Alkoxosynthesis

Low-Temperature Carburization of AL-6XN Enabled by Provisional Passivation

“…The conjugate base of an alcohol (R-OH) is the alkoxide ion (RO-). Typically, alkoxides readily form ligands, act as strong bases, and are nucleophilic when they have nonbulky R-groups [36]. Metal alkoxides can be monomeric or polymeric and can form complex macromolecules [33,[36][37][38].…”

“…Typically, alkoxides readily form ligands, act as strong bases, and are nucleophilic when they have nonbulky R-groups [36]. Metal alkoxides can be monomeric or polymeric and can form complex macromolecules [33,[36][37][38]. Highly electropositive metals may react directly with an alcohol solution, leading to the formation of an alkoxide [36].…”

“…Metal alkoxides can be monomeric or polymeric and can form complex macromolecules [33,[36][37][38]. Highly electropositive metals may react directly with an alcohol solution, leading to the formation of an alkoxide [36]. Such reactions may dissolve metal in the alcohol, forming hydrogen gas and an insoluble alkoxide, following the general reaction:…”

“…where the alcohol may be methanol, ethanol, etc. However, this route is unlikely for transition-metal alkoxide formation [36]. For some transition-metal alkoxides, a metal-halide feed stock reacts with sodium alkoxides in an alcohol solution.…”

“…For some transition-metal alkoxides, a metal-halide feed stock reacts with sodium alkoxides in an alcohol solution. A metathesis reaction (mutual ion exchange) occurs with the precipitation of the less-soluble product [33,36,[38][39][40][41]. An example is:…”