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AIIMS2003ChemistryCoordination Compounds

The complex used as an anti-cancer agent is

Options

  1. Amer- [ Co ( NH ₃ )₃ Cl ₃ ]
  2. Bcis-[ . PtCl ₂ ( NH ₃ )₂ ]
  3. Ccis- K ₂ [ PtCl ₂ Br ₂ ]
  4. 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.

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