Aromatic

[swooth01]

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Hey everyone,

I am having troubles knowing the difference between anti-aromatic and non-aromatic. Can you guys give me some of your tips? Thanks in advance.

 

[Vapor1122]

aromatic: conjugated with 4n + 2 electrons
anti-aromatic: conjugated with 4n electrons
non-aromatic: anything else

Pretty sure, anyway.

 

[Saber tooth]

Aromatic (more stable than its open chain counter part)

If :

1) cyclic (is a ring)
2) flat ( kinda hard to know unless memorized which are and which aren't)
3) has 4n+ 2 number of electrions (Huckels rule)
simply if has these number of electrons 6,10,14,18 ect. add by 4's
4) has a P orbital at every carbon (is conjugated) ( if has double bond then has p orbital and if has free electrons with a minus sign then has a P orbital at that carbon or if a carbon cation)

Anti aromatic (less stable then its open chain counter part)

1) cyclic
2) has 4n number of electrons ( simply 0,4,8,12 etc. # of electrons)
3) not flat
4) has a P orbital at every carbon

Non- aromatic

1) not cyclic (not a ring)
2) has a carbon with no P orbital (example sp3 carbon)

 

[alltheway]

Aromatic (more stable than its open chain counter part)

If :

1) cyclic (is a ring)
2) flat ( kinda hard to know unless memorized which are and which aren't)
3) has 4n+ 2 number of electrions (Huckels rule)
simply if has these number of electrons 6,10,14,18 ect. add by 4's
4) has a P orbital at every carbon (is conjugated) ( if has double bond then has p orbital and if has free electrons with a minus sign then has a P orbital at that carbon or if a carbon cation)

Anti aromatic (less stable then its open chain counter part)

1) cyclic
2) has 4n number of electrons ( simply 0,4,8,12 etc. # of electrons)
3) not flat
4) has a P orbital at every carbon

Non- aromatic

1) not cyclic (not a ring)
2) has a carbon with no P orbital (example sp3 carbon)

sabertooth is on the ball

 

[levyusupov]

sabertooth is on the DAT. 😉