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Statement-1: In OC-M-CO if one CO is rep...

Statement-1: In OC-M-CO if one CO is replaced by better `pi-a c c e p t o r` ligand than CO, then stretching frequency of C-O bond increases.
Statement-2: If replaced ligand is better `pi-a c c e p t o r`, it will reduce the flow of electron in the `pi^(**)` orbital of CO.

A

Statement-1 is True, Statement-2 is True , Statement-2 is a correct explanation for Statement-1.

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1.

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

Text Solution

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The correct Answer is:
A
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Which of the following is the strongest pi-acid for pi-a c c e p t o r ?

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Statement -1 The C - O bond length of aliphatic alcohols is less than phenols Statement - 2 in phenols C - O bond acquires pi bond character.

If in the mixed carbonyl the other ligand is also pi acceptor it would compete with the ligand CO for gaining the metal d_(pi) electron charge The higher is the extent of back donation in CO , the lesser will be the stretching vibration frequency for C-O bond If PP_(3) is better pi-acceptor than CO then answer the following Select the correct order of stretaching vibration frequency C-O bond in following molecules (I) [Ni(CO))_(4)] (II) [Ni(PF_(3))(CO)_(3)] (a) I=II I ltII (c ) I =II (d) cannot be predicated .

What is the bond order between C and O in CO ?

Which of the following has the longest C-O bond length? (C-O bond length of CO is 1.128 A )

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