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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: Machuu on April 16, 2018, 04:42:01 PM

Title: Jacobsen Catalyst - the number of the electrons
Post by: Machuu on April 16, 2018, 04:42:01 PM

(https://i.imgur.com/wALyO5i.png)
How many electrons does the Cobalt have in that kind of compound? Are my calculations good?

Co = 9 electrons
2x N = 2x 2 electrons because of 2x covalent bondings
2x O = 2x 1 electron (im not sure)
So the right answer is 15?

Title: Re: Jacobsen Catalyst - the number of the electrons
Post by: pgk on April 17, 2018, 10:32:20 AM

Yes, the calculations are correct but your theoretical concept is wrong.
1). =N-Co bonds are not ordinary covalent bonds hereby, but they are “dative covalent bonds”; meaning that the bonding electrons are offered only from the N atom.
2). –O-Co bonds are ionic bonds because cobalt is in form of a phenolic salt, hereby.