Which of the following has aromatic ring in complex?
A
DMG in dimethyl glyoximate
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B
Cyclopentadienyl anion in ferrocene
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C
Both (A) and (B)
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D
None of the above
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Solution
The correct option is B Cyclopentadienyl anion in ferrocene Cyclopentadienyl anion in ferrocene is aromatic as it is planar, cyclic and has 4n+2π electrons.