EASY

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How many of the following are optically inactive?
i. $trans - {[Co {(en)}_{2} ({NH}_{3}) Cl]}^{2 +}$
ii. $cis - {[Co {(en)}_{2} {Br}_{2}]}^{+}$
iii. $[Co {({NH}_{3})}_{3} {Cl}_{3}]$
iv. $trans - {[Co {({NH}_{3})}_{4} {Cl}_{2}]}^{+}$
v. $trans - {[{CoCl}_{2} {(C_{2} O_{4})}_{2}]}^{3 -}$

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Important Questions on Coordination Compounds

HARD

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

Consider the following reaction and statements:

{[Co {({NH}_{3})}_{4} {Br}_{2}]}^{+} + {Br}^{-} \to [Co {({NH}_{3})}_{3} {Br}_{3}] + {NH}_{3}

(i) Two isomers are produced if the reactant complex ion is a cis-isomer.

(ii) Two isomers are produced if the reactant complex ion is a trans-isomer.

(iii) Only one isomer is produced if the reactant complex ion is a trans-isomer.

(iv) Only one isomer is produced if the reactant complex ion is a cis-isomer.

The correct statements are

HARD

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The total number of isomers for a square planar complex:

[MCl (F) ({NO}_{2}) (SCN)]

is:

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

An octahedral complex with molecular composition M.5NH₃.Cl.SO₄ has two isomers, A and B. The solution of A gives a white precipitate with AgNO₃ solution and the solution of B gives white precipitate with BaCl₂ solution .The type of isomerism exhibited by the complex is :

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

Total number of cis

N - M n - C l

bond angles (that is,

M n - N

and

M n - C l

bonds in cis positions) present in a molecule of cis-

[M n {(e n)}_{2} {C l}_{2}]

complex is _________

(e n = {N H}_{2} {C H}_{2} {C H}_{2} {N H}_{2})

HARD

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The correct statement on the isomerism associated with the following complex ions.

(a)

{[N i {(H_{2} O)}_{5} N H_{3}]}^{2 +}

(b)

{[N i {(H_{2} O)}_{4} {(N H_{3})}_{2}]}^{2 +}

and

(c)

{[N i {(H_{2} O)}_{3} {(N H_{3})}_{3}]}^{2 +}

is:

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The one that will show optical activity is
(

en =

ethane

- 1, 2 -

diamine)

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

A reaction of cobalt

(III)

chloride and ethylenediamine in a

1 : 2

mole ratio generates two isomeric products

A

(violet-coloured) and

B

(green-coloured).

A

can show optical activity, but,

B

is optically inactive. What type of isomers do

A

and

B

represent?

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The isomer(s) of

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

that has/ have a

C l - C o - C l

angle of

90^{o},

is/are:

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

Which of the following complexes will show geometrical isomerism?

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

Among the following complexes, the one that can exhibit optical activity is

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The species that can have a trans-isomer is:

(e n = e t h a n e - 1, 2 - d i a m i n e, o x = o x a l a t e)

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The number of geometric isomers that can exist for square planar

{[P t (C l) (p y) (N H_{3}) (N H_{2} O H)]}^{+}

is (py = pyridine):

HARD

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

Complex

X

Of composition

C r {(H_{2} O)}_{6} C l_{n}

Has a spin only magnetic moment of

3.83 B . M .

It reacts with

{A g N O}_{3}

And shows geometrical isomerism. The IUPAC nomenclature of

X

Is:

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

Which one of the following complexes shows optical isomerism? (en=ethylendiamine)

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The complex that can show

f a c

- and

m e r

-isomers is:

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The number of isomers possible for

[Pt (en) {({NO}_{2})}_{2}]

is:

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The number of possible optical isomers for the complexes

{M A}_{2} B_{2}

with

s p^{3}

and

d s p^{2}

hybridized metal atom, respectively, is:
Note:

A

and

B

are unidentate neutral and unidentate monoanionic ligands, respectively.

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

The number of geometrical isomers of

[{CrCl}_{2} (en) {({NH}_{3})}_{2}],

where en = ethylenediamine, is-

MEDIUM

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

Which of the following complex species is not expected to exhibit optical isomerism?

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Isomerism in Coordination Compounds

Complex

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

has ........ number of possible isomers. (en = ethylenediamine)

How many of the following are optically inactive? i. trans-Coen2NH3Cl2+ ii. cis-[Co(en)2Br2]+ iii. [Co(NH3)3Cl3] iv. trans-CoNH34Cl2+ v. trans-[CoCl2(C2O4)2]3-

Important Questions on Coordination Compounds

Learn and Prepare for any exam you want !

How many of the following are optically inactive?
i. $trans - {[Co {(en)}_{2} ({NH}_{3}) Cl]}^{2 +}$
ii. $cis - {[Co {(en)}_{2} {Br}_{2}]}^{+}$
iii. $[Co {({NH}_{3})}_{3} {Cl}_{3}]$
iv. $trans - {[Co {({NH}_{3})}_{4} {Cl}_{2}]}^{+}$
v. $trans - {[{CoCl}_{2} {(C_{2} O_{4})}_{2}]}^{3 -}$