Geometrical Isomer and calculation of Geometrical Isomers
Geometrical Isomer Geometrical isomer arises because of the restricted rotation about the bond The band may be sigma and π. Restricted π bond : azo , alkene, oxime Sigma bond :- in cyclic compound For sigma bond GI condition :- in order to represent geometrical isomerism by the compound two group at each stereocenter should be different For substituent almost should be in same plane Calculation of Geometrical Isomers Find first n = Number of site for geometrical isomer Classified the molecule -- symmetric and unsymmetrical For Unsymmetrical = 2^n For symmetrical = 2^n-1 + 2^p-1 Mid point of molecule are both side check environment , when same environment = symmetric and different environment = unsymmetric Shown fig... 2 Due to chiral center Calculate n = No. Of Chiral Center Cheked - Chiral compound (POS =X and COS =X) x= absent Shown fig.... 3 Calculation of total isomer if molecule contains more ...