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Byju's Answer
Standard XII
Chemistry
Central Atom and Ligands
Which of the ...
Question
Which of the following act as a donor as well as acceptor ligand?
A
H
2
O
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B
N
H
3
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C
C
O
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D
N
O
2
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Solution
The correct option is
D
C
O
The
C
−
O
ligand can act as a sigma donor and a
Π
acceptor because of the Oxygen atom.
C
↓
≡
O
→
σ
donor
Π
acceptor
Hence,
C
O
acts as donor as well as acceptor.
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Similar questions
Q.
Find the number of ligands which are non-classical ligand and
π
donor as well as
π
acceptor ligand.
[ CO, PH
3
, PF
3
, C
3
H
Θ
5
, C
5
H
Θ
5
]
Q.
Consider the following ligands
N
H
−
2
, acac (
Acetylacetone)
,
O
H
−
, Gly,
O
−
2
, Phen, DMG,
N
O
−
2
,
C
O
2
−
3
,
C
l
−
,
C
H
3
C
O
O
−
,
e
n
,
S
O
2
−
4
,
N
−
2
. Then calculate value of "
P
+
Q
−
R
−
S
"
. Here
P: Total number of ligands which act as bridging as well as monodentate only.
Q: Total number of flexidentate ligands.
R: Total number of bidentate ligands only.
S: Total number of unsymmetrical bidentate ligands.
Q.
N
O
often acts as a three electron donor in contrast to most ligands which donate two electrons. What happens when
N
O
replaces three
C
O
in
[
F
e
(
C
O
)
5
]
and six
C
O
in
[
C
r
(
C
O
)
6
]
?
Q.
Water can also act as a proton donor and proton acceptor towards itself. This is referred to as the:
Q.
Find the number of ligands (s) which are monodentate, neutral as well as a non-classical ligand.
[
C
O
,
C
N
−
,
S
2
O
2
−
3
,
P
F
3
]
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