coordination isomerism

IIT JEE 2015 Papers › Inorganic Chemistry questions › coordination isomerism

1...among the following C-O bond order is lowest in :

(a)[Mn(co)₆]⁺
(b)[Fe(co)₅]
(c) [Cr(co)₆]
(d)[V(co)₆]

2..why Cr³⁺ never forms tetrahedral complexes even if V³⁺, Fe³⁺ form ????????

3.. hich can xists as disastereomers ?????

(a) [Cr(NH₃)₂Cl₄]

(b) [Fe(NH₃)₅Br]²⁺

#Chemistry #Inorganic Chemistry

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govind ·2010-02-17 04:04:43

Ans 1 b... more d electrons means the metal can donate more electrons in the antibonding orbital of carbonyl grp thus weaking the Carbon oxygen bond...so bond order is minimum in this case..
Ans 3 c.. NCS^- is an ambidentate ligand..so can coordinate both from N and S..so it can form a diastereomers..

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coordination isomerism

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