Complex which is used as anticancer drug is-

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Identify the drug: The well-known platinum-based coordination complex used in chemotherapy to treat various cancers is cisplatin.

Chemical Formula: Its chemical formula is $c i s - [Pt (N H_{3})_{2} C l_{2}]$ , consisting of a central platinum(II) ion bonded to two amine ligands and two chloride ligands.

Geometric Isomerism: The cis-isomer is biologically active because both similar ligands ( $N H_{3}$ and $Cl$ ) are positioned on the same side of the square planar geometry.

Mechanism of Action: This specific cis-configuration allows the complex to bind effectively to cellular DNA, forming cross-links that inhibit replication and trigger cancer cell death.

Chemistry - Coordination Chemistry Question with Solution | TestHub

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