University:
Brigham Young University
Course:
CHEM 102 | Concepts of Chemistry
Academic year:

2023
Views:

154

Pages:

2
Author:

InterstellarInsight

Optical Isomerism:- Ligut Sample Paism (1 Plane Polarised ligut (PPL) Left noth (Laevorotatory 1-sumer →Optically inactive Right not (Dextro rotatory d-isomer Polattimeter There are Certain Substance through which when PPL is Passed, it may not rotated or may in Rotate either Clockwise or anticlockwise direction. → When the Substance. donot rotate PPL, then it is Said to be optically inactive. → If the Substance rotate the PPL in Clockwise direction, then the isomer is Called as Dextrorrotatory Orr d-isomert. → It the Substance rotate the PPL in anticlockwise direction, then the isomen is Called as on l-isomen. Laevorotatory Origin of optical activity :- The optical activity of Compound Originates from the Presence of one or more chirtal or asymmetric Carbon atom. Condition for optical activity :- The Compound to be optically active must patisfy following Condition: 1. It must Possess at least one Chireal Carbon atom be. a tetravalent Carbon ator) is bonded to all differrent atom or group. (2) 2. The Compound should not have any Place of Bymmetr Plane of Pymmetry of an object on molecule is au imaginary Plane that divide the molecule into exactly two halves and one half is the mirror image of other. Butau-2-01 ↓ (optically active) Chival c → Pos X →Chiral CH₃ (optically inactive)