Ch_322b_12.06

Ch_322b_12.06 - Chapter 12.6 lecture note

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Organometallic Compounds Organometallic compounds are characterized by the presence of a carbon-metal bond that is polarized as shown: C M δ− δ + Note the polarization due to the electronegativity differences. The carbon has carbanion characte r. The degree of charge separation (polar character) in the carbon-metal bond depends on the metal, the structure around carbon, and the solvent. C: M - + ionic bond (Na + , K + ) C M δ− δ + polar covalent (Mg, Li) C M δ− δ + mostly covalent (Pb, Sn, Hg)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Reactivity of Organometallics The reactivity of organometallic reagents parallels the degree of ionic character in the carbon-metal bond. Alkylsodium and alkylpotassium reagents are very powerful bases that react explosively with water. Organomercury and organolead compounds are much more stable. Organolithium and organomagnesium halides are reactive, but are reasonably easy to handle, and find wide use in organic synthesis. All organometallics tend to be highly poisonous and harmful. Preparation of Organolithium Compounds
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/20/2009 for the course CHEM 322BL at USC.

Page1 / 6

Ch_322b_12.06 - Chapter 12.6 lecture note

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online