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

Question

Which of the following has longest C-O bond length? (Free C-O bond length in CO is 1.128 mathringA) (A) [ Fe ( CO )4]2- (B) [ Mn ( CO )6]+ (C) Ni ( CO )4 (D) [ Co ( CO )4]-

Tardigrade Admin · Accepted Answer

- Ve charge on the complex increases M-C Bond order Increases C-O Bond order decreases

Q. Which of the following has longest $C - O$ bond length? (Free $C - O$ bond length in $CO$ is $1.128 \overset{˚}{A}$ )

$[F e (CO)_{4}]^{2 -}$

$[M n (CO)_{6}]^{+}$

$N i (CO)_{4}$

$[C o (CO)_{4}]^{-}$

$- V e$ charge on the complex increases
$M - C$ Bond order Increases $C - O$ Bond order decreases

Q. Which of the following has longest C−O bond length? (Free C−O bond length in CO is 1.128A˚)

[Fe(CO)4​]2−

[Mn(CO)6​]+

Ni(CO)4​

[Co(CO)4​]−