Question

In: Chemistry

Which of the following species is least likely to function as a ligand in a transition-metal...

Which of the following species is least likely to function as a ligand in a transition-metal coordination compound?

a. BH₃

b. CO₃^2–

c. H₂O

d. NF₃

e. Cl^–

Expert Solution

Ligand must be an electron-rich species for functioning as a ligand in a transition-metal coordination compound.

Lewis structure of given species are shown below.

s.no.	Species	Lewis structure	electron rich or deficient
a	BH₃		deficient
b	CO₃^2–		rich
c	H₂O		rich
d	NF₃		rich
e	Cl^–		rich

From above structures it is clear that is least likely to function as a ligand in a transition-metal coordination compound because central atom of is electron-deficient or only 6 electrons around boron (should 8 i.e. incomplete octet).

Therefore, option (a) is correct.

queen_honey_blossom answered 2 years ago

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