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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: CopperSmurf on October 03, 2009, 07:24:03 PM

Title: Abbreviation Problems, what's NaCp?
Post by: CopperSmurf 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?

Title: Re: Abbreviation Problems, what's NaCp?
Post by: Yggdrasil 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).

Title: Re: Abbreviation Problems, what's NaCp?
Post by: aurophilic 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 ::)