Page 25 - M.Sc-Chemistry

SASTRA Deemed to be University M.Sc. (Chemistry)

L T P C
5 0 0 5
Course Code: CHY412
Semester: II

CHEMISTRY OF TRANSITION METALS
Course Objectives:
This course aims to:
 Understand the advanced concepts of transition metal coordination/organometallic
chemistry, and characterization of these compounds using various spectroscopic
techniques
 Understand the practical applications of inorganic complexes/compounds through an
in-depth study of industrially important catalytic reactions using
coordination/organometallic complexes

UNIT – I 15 Hours
COORDINATION CHEMISTRY
Introduction to transition metal complexes: types of ligands, chelates, isomerism, stability,
stability constants, chelate effect, structure and coordination number.

Theories of bonding: Sedgwick, VB theory, crystal field theory, crystal field splitting, d–orbital
splitting, spectrochemical series, weak and strong field ligands, low spin and high spin
complexes, Crystal Field Stabilization Energy (CFSE), thermodynamic and related aspects of
crystal fields, ionic radii, heats of ligation, lattice energies, site preference energies. Ligand
field theory, Molecular Orbital Theory. Magnetic properties of transition metal complexes

Reaction mechanisms in Coordination chemistry: inert and labile compounds. Octahedral
complexes: substitution reactions, dissociative, associative, conjugate base mechanism.
Square planar complexes: Substitution reactions, trans effect, theories of trans effect. Electron
transfer reactions: Inner and outer sphere.

UNIT – II 15 Hours
ORGANOMETALLIC CHEMISTRY
Introduction of organometallics: 18 electron rule, 16 electrons square planar. Synthesis,
structure, bonding and reactivity of different types of ligands: - donors ligands, metal carbonyl
complexes, metal phosphines, metal N-heterocyclic carbenes, nitrosyl, hydrogen, hydride and
dinitrogen complexes, -donor ligands, carbenes, carbynes, alkenes, alkyne complexes,
cyclopentadienyls, metallocenes, benzenoid systems, hapticity.

UNIT – III 15 Hours
ORGANOMETALLIC REACTIONS AND CATALYSIS
Reaction mechanisms: Coordinative unsaturation, ligand dissociation and substitution,
oxidative addition, reductive elimination, β hydrogen elimination, activation of small molecules
by complexation, agostic interaction, alkyl migration, insertion and elimination, stereochemical
change.
Catalysis: Hydrogenation, hydroformylation, water gas shift reactions, Monsanto acetic acid
process, Wacker process, Zeigler-Natta polymerization, cross coupling reactions (Suzuki and
Heck) and Buchwald amination using organometallic catalyst.

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