MHT CET202519 Apr 2025Morning ShiftChemistryCoordination CompoundsActual
Which from following coordinate complexes contains the ligand en ?
Options
- ATetraamminecopper (II) ion
- BBis(ethylenediamine)dithiocyanatoplatinum (IV)
- CPentacarbonyliron (o)
- DTetracyanonickelate (II)
Correct answer
B. Bis(ethylenediamine)dithiocyanatoplatinum (IV)
Step-by-step solution
The ligand 'en' denotes ethylenediamine ( NH₂ CH₂ CH₂ NH₂ ) . Analyzing the complexes: Tetraamminecopper(II) ion contains only ammine ligands [ Cu(NH₃)₄ ]²⁺ . Bis(ethylenediamine)dithiocyanatoplatinum(IV) explicitly contains two ethylenediamine ligands [ Pt(en)₂(SCN)₂ ]²⁺ . Pentacarbonyliron(0) features carbonyl ligands [ Fe(CO)₅ ] . Tetracyanonickelate(II) consists of cyano ligands [ Ni(CN)₄ ]²⁻ . Only the bis(ethylenediamine) complex contains the 'en' ligand. Final answer: B