A ligand is an ion, a molecule or a molecular group that binds to another chemical entity to form a larger complex. Among the following which one is characterised by a divalent organic ligand?
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Cyclopentadienyl complex
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Metallocene
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Sandwich compound
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Transition metal carbene
D
Correct answer
Explanation
A transition metal carbene complex is a organometallic compound featuring a divalent organic ligand. The divalent organic ligand coordinated to the metal center is called a carbene. Carbene complexes for almost all transition metals have been reported.