COORDINATION CHEMISTRY II

Paper Code: 
CHY 411
Credits: 
3
Contact Hours: 
45.00
Max. Marks: 
100.00
Objective: 

Course Objective(s):

This course will enable the students to –

  • Determine the point groups of simple molecules.
  • explain the nature of metal-ligand bonding in coordination compounds.
  • understand the magnetic and spectral aspects of transition metal complexes and their applications.
  • Interpret the Latimer, Frost, Pourbaix and Ellingham diagrams

Course Outcomes (COs):

Course Outcomes

 

Teaching learning strategies

Assessment

Strategies

On completion of this course, the students will be able to-

CO95: interpret the point groups of different molecules by applying the concept of  symmetry elements and operations.

CO96: describe the important postulates of CFT, construct splitting diagrams of d-orbitals for different geometries and calculate CFSE of different complexes.

CO97: apply Jahn Teller Theorem to explain the crystal field splitting in square planar complexes, differentiate between high spin and low spin complexes and explain the colour of complexes.

CO98: differentiate between different types of magnetic behaviour and interpret magnetic moments for different complexes.

CO99: describe L-S coupling and compute ground state terms, employ selection rules, sketch Orgel diagrams and discuss electronic spectrum of Ti+3.

CO100: interpret and apply Frost and Latimer diagrams to predict chemical behavior and relative strengths of species as reductants and oxidants.
  • Class lectures
  • Tutorials
  • Group discussions
  • Use of models
  • Assertion and reasoning
  • Technology enabled learning
  • Peer learning
  • Oral and written examinations
  • Problem solving exercises
  • Assignments
  • Quiz
  • Efficient delivery using seminar presentations
  • Group activity
  • Multiple choice questions
  • Short answer type questions
  • Assertion and reasoning

 

9.00
Unit I: 
Symmetry and Group Theory

Types of symmetry elements and symmetry operations, groups and subgroups, relation between orders of a finite group and its subgroup, conjugacy relation and classes, point group of simple molecules.

 

9.00
Unit II: 
Theory of Bonding in Coordination Compounds : CFT

Crystal Field Theory- postulates, splitting of d orbitals in octahedral, tetrahedral, tetragonal and square planar fields, factors affecting the magnitude of  Δ0, spectrochemical series, formation of high spin (HS) and low spin (LS) complexes, distribution of d-electrons in octahedral and tetrahedral complexes, calculation of crystal field stabilization energy(CFSE) in weak and strong fields, pairing energy, distortion in octahedral complexes- Jahn Teller theorem, applications and limitations of CFT.

 

9.00
Unit III: 
Magnetic Properties of Transition Metal Complexes

Types of magnetism, orbital and spin magnetic moments, methods of determining magnetic susceptibility by Gouy’s balance, spin only moments of dn ions and their correlation with effective magnetic moments, quenching of magnetic moment, super exchange and antiferromagnetic interactions (elementary idea with examples only), applications of magnetic moment data for transition complexes.

 

9.00
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 (Russell-Saunders Coupling), determination of ground state terms, Hund’s rule, hole formulation, calculation of the number of micro states; selection rules- ‘Laporte’ orbital selection rule and spin selection rule, spectroscopic ground states, Orgel energy level diagram for d1(one electron) and d9 state(one hole) discussion of electronic spectrum of [Ti(H2O)6]+3 complex, charge transfer spectra (elementary idea).

 

9.00
Unit V: 
Oxidation and Reduction

Reduction potentials – redox half reactions (EMF calculations),  diagrammatic presentation of potential data (Latimer, Frost and Poubaix diagrams), redox stability in water, disproportionation, oxidation by atmospheric oxygen, elements extracted by reduction – Ellingham diagrams.

 

Essential Readings: 
  • Symmetry and Spectroscopy of Molecules, Revised Second Edition; K. Veera Reddy; New Age Publishers, New Delhi, 2009.
  • Concise Inorganic Chemistry, Fifth Edition; J.D. Lee; Wiley India(P) Ltd, New Delhi, 2008.
  • Principles of Inorganic Chemistry, Thirty Third Edition; B.R. Puri, L.R. Sharma, K.C. Kalia; Vishal Publishing Co., Delhi, 2020.
  • Selected Topics in Inorganic Chemistry, G.D. Tuli, R.D. Madan, W.U. Malik; S Chand and Company Ltd, New Delhi, 2019.

 

References: 

 

SUGGESTED READINGS

  • Inorganic Chemistry (Principle of Structure and Reactivity), Fourth Edition; J. E Huheey, E. A. Keiter, R. L. Keiter; Pearson India, New Delhi, 2013.
  •  Chemical Applications of Group Theory, Student Third Edition; F.A. Cotton; Wiley-India(P) Ltd, New Delhi, 2008.
  • Inorganic Chemistry, Seventh International Edition; M. Weller, T. Overton, J. Rourke, F. Armstrong; Oxford University Press, New York, 2018.
  • Advanced Inorganic Chemistry, Sixth Edition; F.A. Cotton, G. Wilkinson, C.A. Murillo, M. Bochmann; John Wiley and Sons, USA, New York, 2007.

e-RESOURCES:

Academic Year: 
2022-2023
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