Transition Metal Complexes: Bonding and Spectra

Paper Code: 
CHY-501
Credits: 
2
Contact Hours: 
30.00
Max. Marks: 
100.00
Objective: 
 

Course Objectives:

This course will enable the students to –

  1. Make the students understand the basic concepts of acid and bases and non-aqueous solvents.
  2. Enable the students to learn about the nuclear reactions and stability of nucleus.
  3. Acquaint the students with the basic principles of analytical and chromatographic techniques

Course Outcomes (COs):

Course

Learning outcomes

(at course level)

Learning and teaching strategies

Assessment Strategies

Paper Code

Paper Title

CHY 501

Transition Metal Complexes: Bonding and Spectra(Theory)

 

The students will be able to –

 

CO81: distinguish between splitting pattern of orbitals for different geometries of complexes

CO82: calculate CFSE for different geometries of complexes and discuss the cause and consequence of Jahn Teller and list out the applications of CFT

CO83: differentiate between different types of magnetic behavior and interpret magnetic moments for different complexes

CO84: describe L-S coupling and compute ground state terms and employ selection rules and sketch orgel diagrams and discuss electronic spectra

CO85: define stability of complexes and compare thermodynamic with kinetic stability of complexes and explain trans effect and its applications

Class lectures

Tutorials

Group discussions

Peer teaching and learning

Question preparation

Subjective type

Long answer

Short answer

Objective type

Multiple choice questions

type questions

Assertion and One answer/two answer

reasoning

 

The oral and written examinations (Scheduled and surprise tests)

Closed-book and open-book tests

Problem-solving exercises

Assignments

Quiz

Semester End Examination
 

 

7.00
Unit I: 
Metal-ligand Bonding in Transition Metal Complexes –I

Prerequisite: Valence bond theory.

Crystal Field Theory- Important postulates, crystal field splitting of d-orbitals in octahedral and tetrahedral complexes, factors affecting the magnitude of  Δ0, calculation of crystal field stabilization energy, strong and weak ligands, spectrochemical series, distribution of d-electrons in t2g and eg orbitals in octahedral and tetrahedral complexes.

 

6.00
Unit II: 
Metal-ligand Bonding in Transition Metal Complexes –II

Distortion of octahedral complexes, crystal field splitting of d-orbitals in square planar complexes and Jahn Teller theorem. Use of CFSE values, number of unpaired electrons and high spin (HS) and low spin (LS) complexes, applications and limitations of CFT.

4.00
Unit III: 
Magnetic Properties of Transition Metal Complexes

Prerequisite: Types of magnetism.               

Types of magnetic behaviour, methods of determining magnetic susceptibility, spin only formula, correlation of μs and μeff values, orbital contribution to magnetic moments, applications  of magnetic moment data for 3d-complexes.

 

7.00
Unit IV: 
Electronic Spectra of Transition Metal Complexes

Types of electronic transitions, coupling of orbital angular momenta and spin angular momenta (in p2 and d2 configuration), spin orbit coupling/LS coupling, determining the ground state terms, Hund’s rule, hole formulation, calculation of the number of micro states, selection rules- Laporte ‘orbital’ selection rule, spin selection rule, spectroscopic ground states. Orgel energy level diagram for d1 & d9 states, discussion of electronic spectrum of [Ti(H2O)6]+3 complex.

6.00
Unit V: 
Thermodynamic and Kinetic Stability of Metal Complexes

Definition of stability, stepwise and overall formation constants, kinetic v/s thermodynamic stability, labile and inert complexes, factors affecting the stability of complexes, trans-effect, theories and its uses, mechanism of substitution reactions in square planar complexes, trans-effect, theories of trans-effect and its uses.

Essential Readings: 
  • Concise Inorganic Chemistry; Fifth Edition; J.D. Lee; Wiley India(P) Ltd, New Delhi, 2008.
  • Inorganic Chemistry; Seventh International Edition; M. Weller, T. Overton, J. Rourke, F. Armstrong; OxfordUniversity Press, New York, 2018.
  • Inorganic Chemistry; Fifth Edition; A. G. Sharpe, C.E. Housecraft; Pearson Education, England, 2018.
  • Concepts and Models of Inorganic Chemistry; Third Edition; Bodie Douglas, Darl McDaniel, John Alexander; John Wiley and Sons, Singapore, 2001.
  • General and Inorganic Chemistry Part I & II; Third Edition, R. Sarkar, New Central Book Agency Ltd, 2011.
  • Coordination Chemistry; D. Banerjea; Tata Mc Graw Hill Publishing Company Limited, New Delhi, 1993.

 

Academic Year: 
2020-2021
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