NEETChemistryCoordination Compounds
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Ethane- 1,2 -diamine is an ambidentate ligand. Reason (R): Ethane- 1,2 -diamine has two nitrogen donor atoms. In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
D. (A) is not correct but (R) is correct
Step-by-step solution
Assertion (A) is incorrect. An ambidentate ligand is a unidentate ligand that has more than one donor atom but coordinates to the central metal atom through only one donor atom at a time (e.g., SCN^- , NO₂^- ). Ethane- 1,2 -diamine ( H₂N-CH₂-CH₂-NH₂ ) binds to the central metal ion through both of its nitrogen atoms simultaneously, making it a bidentate ligand, not an ambidentate ligand. Reason (R) is correct. The structure of ethane- 1,2 -diamine contains two amino groups, providing two nitrogen atoms that act as