organometallics

• contains at least 1 bond between carbon molecule and metal element bonds or carbon metal bonds 


  organometallic compounds
• organolithium reaction formula

  R3C-X + 2Li = R3C-Li + LiX
• it is the first organolithium prepared by Edward Frankland


  diethylzinc
• it is what we call Simmons-smith reaction named after HOward Ensign Simmons Jr. and Ronald D. Smith


  organozinc
• it is named after french chemist, Francois aguste victor grignard, where it is the slow adddition of alkyl, aryl, alkenyk halide.


  organomagnesium or grignard reagent
• formula of Grignard reagent

  R3C-X+Mg=R3C-Mgx
• it is what we call Gilman reagent name after Henry Gilman 


  organocuprate
• organocuprate formula

  R-X 1.Li/2.CuI R2CuLi
• it is the simplest dimethyl cadmium reported by Erich Kranse


  organocadmium
• organocadmium is composed of other organometallic compounds: Lb/Lead, Sn/Tin and?


  organoboron
• it is the unequal distribution of electrons, characterized by positive charge on one atom and a partial negative charge o n the other.


  polar covalent bond
• a molecule with a large dipoles (polar molecules) tend to have high boiling point or ?


  melting points
• electro is derived from electrons while phile means?

  loving
• any molecule, ion or atom that is deficient in electron in some manner can act as an ?

  electrophile
• reagent that attacks the negative of the molecules or loves electron is called ?


  electrophile
• electrophile can be either positively or negatively charged
• movement of electron is affected by the density and the movement is generally from high density to low density area
• electrophiles are called Lewis acid beacause they accept electrons, involved in electrophilic addition and substitution
• two types of electrophiles:

  positively charged & neutral electrophiles
• neutral electrophiles: a) All Lewis acid b) the neutral atom that accepts electron c)free radicals, carbenes and nitrene acts as electrophile d)species with electrophilic centre
• a reactant that gives a electron pair to form a covalent bond. usually negatively charged or is neutral with a lone couple of donatable electrons.


  nucleophile
• it is the species that attacks the positive side of the substance or loves nucleus


  nucleophiles
• it donate unshared electron pairs, and act as Lewis bases


  nucleophiles
• their electrons move from lower density to higher density area


  nucleophile
• the four types of nucleophile are: 1.negatively charged nucleophiles 2. all lewis bases which contain lone pairs 3. Ambident Nucleophile 4. ampiphile nucleophile