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Infra Red spectroscopy, NAME: MOMIN TAUKIR AHMED SHAKIL, TOPIC :IR…
Infra Red spectroscopy
Introduction
beyond re d region(12800-10cm-1)
Mid infrared ( 400 - 400cm‐¹)
Near infrared ( 14000-400cm‐¹)
Far infrared (400 - 10cm‐¹)
Theory
Fundamental Vibration
Stretching
symmetric stretching
asymmetric stretching
Bending
Rocking
Wagging
Scissoring
Twisting
Vibrational Frequency
depends on
Bond strength
Reduced mass
degree of freedom
Rotational
Vibrational
Translational
factors affecting vibrational frequency
Coupled Vibrations and Fermi Resonance
Electronic Effects
Hydrogen bonding
Bond angles
Instrumentation
Sample cell handling
Solid dissolved in solvent
As solid film
Mull technique
Solid dissolved in solvent
Pressed pellet technique
Sampling of liquid
Sampling of gases
Monochromator
Grating monochromator
Prism monochromator
Detector
Golay cell
Bolometer
Thermocouple
Thermister
Pyroelectric detector
source of radiation
Globar
Nichrome wire
Nernst Glower
Tungsten Filament Lamp
Application
Qualitative analysis
Structure determination
Identification of organic compound
Distinction between two type of hydrogen bonding
Quantitative analysis
Study of chemical reaction
Study of keto enol tautomerism
NAME: MOMIN TAUKIR AHMED SHAKIL
TOPIC :IR SPECTROSCOPY
ROLL NO:19PH69