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Topic: Abbreviation Problems, what's NaCp?  (Read 4287 times)

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Offline CopperSmurf

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Abbreviation Problems, what's NaCp?
« on: October 03, 2009, 07:24:03 PM »
Hey all, I came across this during one of my readings and so, what's NaCp? Sodium with what? I've never heard of Cp before.  ???

Is Cp like a 5 Carbon ring with two double bonds and 5 hydrogens? A negative charge on one of the carbons?
« Last Edit: October 03, 2009, 07:43:29 PM by CopperSmurf »
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Offline Yggdrasil

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Re: Abbreviation Problems, what's NaCp?
« Reply #1 on: October 03, 2009, 10:04:41 PM »
Yes.  Cp stands for cyclopentadiene.  Cp can relatively easily be deprotonated because the cyclopentadienyl anion is stabilized by its aromaticity (it has 6 pi electrons in a cyclic system just like benzene).
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Offline aurophilic

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Re: Abbreviation Problems, what's NaCp?
« Reply #2 on: November 05, 2009, 09:37:54 AM »
Actualy it's cyclopentadiene when it has 6 hydrogens, and cyclopentadienide after being deprotonated to form the anion.

Also, if you run across Cp* that means pentamethyl Cp.

Used to make this stuff by the boat load back in gard school ::)
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