Nomenclature (part II) IUPAC organometallic compounds

Nomenclature IUPAC organometallic compounds

1. Nomenclature for Organometallic Compounds Dr. Mithil Fal Desai Shree Mallikarjun and Shri Chetan Manju Desai College Canacona Goa

2. General The simplest entities of organic functional group are alkyl radicals are named by the customary group names. methyl -CH 3 ethyl -CH 2 CH 3 isopropyl -CH(CH 3 ) 2 CH 3 Li - methyl lithium Note: The alkyl groups can be treated as anions to calculate oxidation state of the metal. ethyl benzyl

3. Few examples [Hg( CH 3 ) 2 ] -di methyl mercury Mg Br [ CH(CH 3 ) 2 ] - b romo( isopropyl )magnesium(II) -b romo( isopropyl )magnesium 3. [Tl(CN)(C 6 H 5 ) 2 ] - cyno (diphenyl)thallium 4. [Fe (CH 3 CO) I ( CO ) 2 { P(CH 3 ) 3 } 2 ] - a cetyldi c arbonyl i dobis ( tri m ethylphosphine )iron

4. Complexes with unsaturated group f errocene (common name) bis( η 5 - cyclopentadienyl)iron (IUPAC name) Hapticity ( η x ) It is a term used to describe the participation of multiple atoms simultaneously during π coordination. Here ‘x’ refers to the number of atoms of ligand involved in π bond formation. Note: Denticity and hapticity are different. Denticity refers to the number of donor atoms that share a pair of electrons from the single ligand to a central atom in a coordination complex.

5. Examples K[PtCl 3 ( η 2 -C 2 H 4 )] -potassium trichloro( η 2 -e thene)platinum(II) potassium trichloro( η 2 -e thene )platinum [Cr(C 6 H 6 ) 2 ] -bis(benzene)chromium (0) -bis(benzene)chromium -bis( η 6 -benzene)chromium [Cr( η 6 -C 6 H 6 ) 2 ] Note: Do read about the Kappa ( κ ) convention.