CHEMISTRY OF d- AND f- BLOCK ELEMENTS

Paper Code: 
CHY 501
Credits: 
3
Contact Hours: 
45.00
Max. Marks: 
100.00
Objective: 

Course Objective(s):

This course will enable the students to -

  • explain the trends in properties and reactivity of d-block elements and acquaint with the basic concepts of coordination chemistry
  • explain the nature of metal-ligand bonding in coordination compounds.
  • understand the magnetic and spectral aspects of transition metal complexes and their applications.

 

Course Outcomes (COs):

Course Outcomes

 

Teaching learning strategies

Assessment

Strategies

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

CO64: compare the properties of first transition series (3d) with the second (4d) and third transition series(5d).

CO65: explain the various properties of f-block elements and differentiate between lanthanides and actinides .

CO66: describe the basic concepts of co-ordination chemistry, recognize isomerism in complexes,  determine effective atomic number, IUPAC name of coordination compounds and distinguish the structure of different types of complexes on the basis of valence bond theory.

CO67: describe the important postulates of CFT, construct splitting diagrams of d-orbitals for different geometries and calculate CFSE of different complexes.

CO68: 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.

CO69: differentiate between different types of magnetic behaviour and interpret magnetic moments for different complexes.

 
  • 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: 
Chemistry of d-block Elements

Pre requisite- an elaborate idea of periodic table and electronic configurations

Introduction, electronic configuration, characteristic properties of d-block elements (I, II & III transition series)– ionic and atomic radii, metallic character, variable oxidation states and their stability, density, melting point and boiling point, catalytic properties, ionization energies, magnetic properties and its origin, measurement of magnetic moments, colour, complexation tendencies, comparison of the elements of first transition series with second and third transition series with special reference to magnetic property, spectral property, metal-metal bonding and cluster compounds (elementary approach).

9.00
Unit II: 
Chemistry of f-block Elements

Definition, position of lanthanides and actinides in the periodic table, electronic configuration  separation of rare earth elements (ion exchange method only), oxidation states, complexation tendency, magnetic and spectral properties, lanthanide and actinide contraction- causes and consequences, comparison between d- and f- block elements.

 

9.00
Unit III: 
Concepts of Coordination Chemistry

Definition of coordination compounds, Werner’s coordination theory, concept of effective atomic number (EAN concept), classification of ligands, IUPAC nomenclature of coordination compounds, isomerism in coordination compounds- structural and stereoisomerism (coordination number 4 & 6), salient features of Valence Bond Theory(VBT), structure of octahedral, tetrahedral and square planar complexes on the basis of VBT and its limitations.

 

9.00
Unit IV: 
Crystal Field Theory

Crystal Field Theory- postulates, splitting of d orbitals in octahedral, tetrahedral, tetragonal and square planar fields, spectrochemical series, factors affecting the magnitude of  Δ0, crystal field stabilization energy in weak and strong fields; pairing energy, number of unpaired electrons and high spin (HS) and low spin (LS) complexes, distribution of d-electrons in t2g and eg orbitals in octahedral and tetrahedral complexes, distortion of octahedral complexes- Jahn Teller theorem, use of CFSE values, applications and limitations of CFT.

 

9.00
Unit V: 
Magnetic Properties and Electronic Spectra 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, Curie-Weiss Law, quenching of orbital angular momentum, coupling schemes(spin-spin, orbit-orbit and spin-orbit coupling), determination of ground state terms, Hund’s rule, hole formulation, micro states, selection rules- Laporte ‘orbital’ selection rule, spin selection rule, Orgel energy level diagram for d1 & d9 state

 

Essential Readings: 
  • 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.
  • General and Inorganic Chemistry Part I & II, Third Edition; R. Sarkar; New Central Book Agency Ltd, 2011.

References: 

 

SUGGESTED READINGS:

  • Inorganic Chemistry, Seventh International Edition; M. Weller, T. Overton, J. Rourke, F. Armstrong; Oxford University Press, New York, 2018.
  • Nomenclature of Inorganic Chemistry – Recommendations – 1990; Edited by G.J. Leigh; Jain Interscience Press, Delhi, 1994.
  • Inorganic Chemistry, Fifth Edition; A. G. Sharpe, C.E. Housecraft; Pearson Education, England, 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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