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. understand the basic concepts of acid and bases and non-aqueous solvents.

  2. learn about the nuclear reactions and stability of nucleus.

  3. be acquainted 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 –

 

CO77: describe the important postulates of CFT, construct splitting diagrams of d-orbitals for different geometries and calculate CFSE of different complexes.

CO78: 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 color of complexes.

CO79: differentiate between different types of magnetic behavior and interpret magnetic moments for different complexes

CO80: describe L-S coupling and compute ground state terms, employ selection rules, sketch Orgel diagrams and discuss electronic spectrum of Ti+3

CO81: explain thermodynamic with kinetic stability and compare between inert and labile complexes.

CO82: discuss SN2 mechanism in square planar complexes and apply the concept of trans effect to identify the cis and trans isomers.

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 answe 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.

References: 
  • 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; Oxford University 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: 
2021-2022
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