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synthesis, structure and bonding aspects of following organometallic compounds with carbon- π
donor ligands: (a) Two electron donor (olefin and acetylenic complexes of transition metals): (b)
Three electron donor (π-allyl complexes of transition metals): (c) Four electron donor (butadiene
and cyclobutadiene complexes of transition metals): (d) Five electron donor cyclopentadienyl
complexes of transition metals – metallocenes with special emphasis to ferrocenes): (e) Six
electron donor [Benzene (arene) complex]. Fluxional Organometallic compounds (classification)
UNIT-II (12 Hours)

Homogeneous Transition metal catalysis: General considerations, Reason for selecting
transition metals in catalysis (bonding ability, ligand effects, variability of oxidation state and
coordination number), basic concept of catalysis (molecular activation by coordination and
addition), proximity interaction (insertion/inter-ligand igration and elimination, rearrangement).
Phase transfer catalysis. Homogeneous hydrogenation of unsaturated compounds (alkenes,
alkynes, aldehydes and ketones). Asymmetric hydrogenation (Olefins).
UNIT-III (5 Hours)
Some important homogeneous catalytic reactions: Ziegler Natta polymerization of ethylene
and propylene, oligomerisation of alkenes by aluminium alkyl, hydroformylation of unsaturated
compounds using cobalt and rhodium complexes, carbonylation of alkenes and alkynes using
nickel carbonyl and palladium complexes.
UNIT-IV (8 Hours)

Metal-metal bonding in carbonyl and halide clusters Polyhedral model of metal clusters, effect
of electronic configuration and coordination number, Structures of metal carbonyl clusters of three
atoms M 3(CO) 12 (M=Fe, Ru & Os), Four metal atoms (tetrahedra) [M 4(CO) 12 {M= Co, Rh &Ir}]
and octahedron of type M 6(CO) 16 [M= Co & Rh], and halide derivatives of Rhenium (III)
triangles, metal carbonyls involving bridged-terminal exchange and scrambling of CO group.
UNIT-V (8 Hours)
Transition Metal-Carbon multiple bonded compounds: Metal carbenes and carbines
(preparation, reactions, structure, and bonding considerations). Biological and industrial
applications and environmental aspects of organometallic compounds.

PRACTICAL (30 HOURS)

1. Preparation of following compounds:
(i) Tetrapyridine copper (II) persulphate
(ii) Dinitritotetrapyridine nickel (II)
(iii)Mercury (tetraisothiocyanato)cobaltate(II).
(iv) Potassium tris(oxalato)aluminate(III)
(v) Sodium hexa(nitro)cobaltate(III)
(vi) Potassium tris(oxalato)cobaltate(III)
2. Characterization of above compounds by the following techniques:
(i) Elemental analysis
(ii) Molar conductance values
(iii)Thermal analysis

SUGGUESTED READINGS:

1. Principles of organometallic compounds – Powell
2. Organometallic chemistry (an Introduction) – Perkin and Pollar
3. Advanced Inorganic Chemistry – Cotton and Wilkinson
4. Organometallic Chemistry-R.C. Mehrotra

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