1. Dr. Pandit Khakre
Asst. Prof
Mrs. K.S.K. College, Beed

2. Orgonometallic compounds :
Orgonometallic compounds are those in which the central metal atoms are
bonded directly to carbon atom.
Classification of orgonometalic compounds.
Ex. Boron, arsenic, silicon etc.
Ionic compounds of electropositive metal.
Covalent orgonometallic compounds.
Electron deficient organometallic compounds.
Transition metal orgonometallic compounds.

3. Properties of Orgonometallic compounds :
Orgonometallic compounds tend to be thermally unstable and most of them decompose the LiH and alkene.
They are generally liquids or low melting solid and are found in molecular association.
They typical covalent substances, soluble in hydrocarbons or non-polar liquid.
LiMe and LiBu are usually synthetic reagents have been increasingly used in organic synthesis as polymerization catalyst.

4. Orgonometallic compounds of mercury preparation :
From Grignark reagent
HgCl2 + RMgcl R-Hg Cl + Mg Cl2
From methyl fodide
CH3I + Hg CH3 – Hg-I
Properties
Orgonomecuric compounds are slightly soluble in water.
They have low melting point.
Orgonomercuric compounds (R-Hg-X) are crystalline solid.
They are volatile, toxic and colourless liquid.
Orgonometallic compounds of mercury obtained by action of alefin and acetylene.

5. Application of organotin compounds :
Orgonotin are used as stabiliser of PVC.
They are used in preparation of bacteriocides.
They are used as catalyst in polymerisation
They are used for coating of glasses with SnO2.
Properties of orgonotin compounds:
Orgonotin are generally monomeric colourless liquid and volatile ligand.
They are insoluble in water.
Orgonotin react slowely with concentrated halogen hydracids.
Orgonotin complex react with SnCl4 to give variety of orgonotin halides.

6. Metal carbonyl :
The compounds formed generally by transition elements with carbon
monoxide are called metal carbonyl.
Preparation : Direct Method-
When carbon monoxide is treated with metallic powder under suitable condition of temperature and pressure. Mono-nuclear metal carbonyl.
Ex. Co treated with powdered Iron at 300C.
pressure at 1 atm it gives metal carbonyl.
When Co is treated with pwdered Iron at 2000C. And 200 atm pressure gives metal carbonyl.

7. Direct method :
- When metal compounds are treated with carbon monoxide it gives metal
carbonyl.
Metal compounds of Nickel reacts with carbon monoxide it gives metal carbonyl.
Properties :
Metal carbonyl formed colorued compounds.
They are insoluble in water but soluble in organic solvent.
They are crystalline solid.
On heating at high temperature they get decomposed.