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Introduction to Optical Isomerism

a For the com...

Question

(a) For the complex $[F e (H_{2} O)_{6}]^{+ 3}$ , write the hybridisation, magnetic character and spin of the complex. (At. number : Fe = 26)
(b) Draw one of the geometrical isomers of the complex $[P t (e n)_{2} C l_{2}]^{+ 2}$ which is optically inactive.

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Solution

(a) Hybridisation- $s p^{3} d^{2}$ , magnetic character- paramagnetic and have octahedral geometry.
(b) The geometrical isomer is shown in the diagram. Trans isomer of $[P t (e n)_{2} C l_{2}]^{+ 2}$ shows no optical activity.

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Q. (a) For the complex

[F e (C N)_{6}]^{4 -}

, write the hybridisation, magnetic character and spin type of the complex. (At. number: Fe=26)
(b) Draw one of the geometrical isomers of the complex

[C o (e n)_{2} C l_{2}]^{+}

which is optically active.

Q. (a) For the complex

{[F e {(C N)}_{6}]}^{3 -}

, write the hybridization type, magnetic character and spin nature of the complex. (Atomic number :

F e = 26

).
(b) Draw one of the geometrical isomers of the complex

{[P t {(e n)}_{2} {C l}_{2}]}^{2 +}

which is optically active.

Q. Write IUPAC name of the complex

[P t (e n)_{2} C l_{2}]

. Draw structures of geometrical isomers for this complex.

Q. Assertion :The geometrical isomer of the complex [M(NH

_{3}

_{4}

_{2}

] are optically inactive. Reason: Both geometrical isomers of the complex [M(NH

_{3}

_{4}

_{2}

] possess axis of symmetry.

Q. Read the following questions and answer as per the directions given below:

Statement I: The geometrical isomers of the complex

[M (N H_{3})_{4} C l_{2}]

are optically inactive.
Statement II: Both geometical isomers of the complex

[M (N H_{3})_{4} C l_{2}]

possess axis of symmetry.
(IIT-JEE, 2008)

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