AIIMS2003ChemistryCoordination Compounds
The complex used as an anti-cancer agent is
Options
- Amer- [ Co ( NH ₃ )₃ Cl ₃ ]
- Bcis-[ . PtCl ₂ ( NH ₃ )₂ ]
- Ccis- K ₂ [ PtCl ₂ Br ₂ ]
- DNa ₂ [ CoCl ₄ ] .
Correct answer
B. cis-[ . PtCl ₂ ( NH ₃ )₂ ]
Step-by-step solution
Cis-[ [ PtCl ₂ ( NH ₃ )₂ ] is used as an anti-cancer agent, called as cisplatin and is highly toxic. On injecting, the more reactive Cl groups are lost so the Pt atom bonds to a N atom in guanosine (part of the DNA molecule). Those cells which are undergoing cell division are attacked by cisplatin.