spectral interpretation of infrared spectroscopy

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it is an advanced presentation on the depths and insights of pharmaceutical analysis

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Presentation Transcript

Slide 1: 

SPECTRAL INTERPRETATION INFRARED SPECTROMETRY By M. SREEKIRAN B. PHARMACY 4TH YEAR SRI INDU INSTITUTE OF PHARMACY - SHERIGUDA

Slide 2: 

DIFFERENCE BETWEEN SPECTROSCOPY AND SPECTROMETRY

Slide 3: 

BASIC PRINCIPLE IN INFRARED ABSORPTION CLOSELY PACKED ABSORPTION BANDS FINGER ENERGY CONVERSION BY THE MOLECULE

Slide 4: 

WHY CONSIDERING INFRARED ABSORPTION?

Slide 5: 

ROTATIONAL AND VIBRATIONAL ENERGIES

Slide 8: 

PROPERTIES OF A MOLECULE TO SHOW IR ABSORPTION Particular wavelength characteristics Dipole moment exhibited by the molecule Hydrogen bonding

Slide 9: 

FACTORS AFFECTING INFRARED ABSORPTION MOLECULAR SIZE NATURE OF BOND GEOMETRICAL ORIENTATION

Slide 10: 

INTERPRETATION OF SPECTRA

Slide 11: 

All functional groups are analyzed based on the stretches present in the molecule The presence of functional groups are identified by different stretches like C-H , C=O , C=N , C=C etc

Slide 12: 

ABSORPTION REGION BASED ON BOND

Slide 13: 

SAMPLE SPECTRA

Slide 14: 

INTERPRETATION OF AN UNKNOWN SPECTRA

Slide 15: 

REFERENCES BASIC PRINCIPLES OF INFRARED ABSORPTION FROM GURDEEP CHATWAL AND S.K ANAND. SPECTRAL THEORY AND INTERPRETATIONS FROM ROBERT SILVESTEIN. SPECTRA AND DIAGRAMMATIC REPRESENTATIONS FROM http://www.lcc.ukf.net/Chem14/IR&MassSpec.htm ANIMATION MOVEMENTS REPRESENTING VIBRATIONS IN MOLECULE FROM http://chemistry.boisestate.edu/people/richardbanks/spectroscopy/ir.html